CN107156477B

CN107156477B - Co-feeding compound feed for sows and piglets and feeding method thereof

Info

Publication number: CN107156477B
Application number: CN201710330241.6A
Authority: CN
Inventors: 周琳; 李泽磊; 何叶如; 杨宽民; 董翔
Original assignee: Shenzhen Premixinve Nutrition Co ltd
Current assignee: Shenzhen Premixinve Nutrition Co ltd
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2020-06-26
Anticipated expiration: 2037-05-11
Also published as: CN107156477A

Abstract

The invention relates to a sow and piglet co-feeding compound feed and a feeding method thereof, the feed comprises a sow feed and a piglet mixed feed, the sow feed comprises a sow basal feed A and a sow concentrated feed AA, the sow concentrated feed AA is used 3-5 days before delivery or 3-5 days before weaning, the piglet mixed feed comprises a sow basal feed A and a piglet concentrated feed B, during the breeding period, the mass percentage content of the sow basal feed A in the piglet mixed feed is increased from 60wt% to 95wt% according to a preset gradient, and is in a proportional increase relationship with the weight of piglets, and the preset gradient is increased by more than 5wt% according to the weight of the piglets at intervals of a certain period. By taking the lactating sow and the piglet as a whole, a series of package feeds which can be fed by the lactating sow and the piglet simultaneously are developed, the feeding is convenient, different requirements are met, concentrated feeds for the piglet are effectively reduced, the feed cost is greatly saved, and the feeding combination and the feeding amount can be flexibly adjusted according to the growth cycle of the piglet, the actual breeding condition, the market condition and the like.

Description

Co-feeding compound feed for sows and piglets and feeding method thereof

Technical Field

The invention belongs to the technical field of pig feed, and particularly relates to a compound package type piglet co-feeding compound feed designed by taking sows and piglets as a whole and a feeding method thereof.

Background

With the progress of civilization of human society and the increasing demand for animal meat products, the pig breeding industry enters the modern scale intensification stage. Meanwhile, with the establishment and the rise of an accurate nutrition and accurate feeding system, the division of the breeding stage is more and more precise. For example, the production management of sows is from immature gilts to sexual maturity, from estrus to first mating, pre-pregnancy, mid-pregnancy, late-pregnancy, perinatal, lactation, nonpregnant, mating, etc.; the production stage of the piglets also comprises a lactation stage, three days after weaning, two weeks after weaning, a pre-nursing stage, a post-nursing stage, piglets, middle pigs, big pigs and the like. The difference between the nutritional requirements and the metabolic characteristics of the pigs in different physiological stages or growth stages is large, so that a breeder is required to provide accurate and proper nutritional supply for the pigs, and on one hand, the situation that the excessive nutritional content in the feed causes waste and the discharge pressure on the environment is too high is prevented; on the other hand, the situation that the pig grows slowly due to insufficient nutrition in the feed and the production performance is reduced, so that the breeding benefit is influenced is avoided, so that accurate breeding becomes a necessary development trend of the pig breeding industry, and the production and development of feed products are required to be matched with the pig breeding industry.

However, the feed products currently available to the feed industry are far from meeting and adapting to the requirements of precision feeding. Taking a growing pig as an example, according to rough estimation, the nutrition requirement of the piglet changes when the weight of the piglet changes by 2kg, and thus, when the weight of the weaned piglet is increased from 7kg to 25kg, at least 9 feed products with different nutrition compositions need to be replaced. However, the current feed industry and breeding industry only provide three feeds, namely a creep feed, a pre-incubation feed and a post-incubation feed, and more, the current extensive breeding only provides one incubation feed, which is far from meeting and adapting to the current accurate breeding requirement and the requirement and standard of the national environmental protection policy. Meanwhile, if feed products with various types and fine nutrition division are produced, for feed production enterprises, a variety of feed raw materials need to be searched and stored, and the complexity and the variety of the raw materials put higher requirements on production equipment and production processes, so that the feed cost is greatly increased. In addition, a variety of feed products are also a great challenge and obstacle to a breeding production site, and more manpower and material resources are required to be invested to ensure that the feeding of pigs is not wrong. How to realize accurate feeding by matching with the pig industry in the feed industry becomes a problem to be solved urgently.

In modern large-scale pig breeding, on one hand, the reproductive capacity of sows is greatly increased from 7-8 litter farrowing to 14-16 litter farrowing, but the feeding capacity of sows in the lactation period still stays at 5-6 kg/day (the feed intake is increased to 8kg in 15 litter piglets). Under the condition that the original feed intake of a sow is not changed, more piglets need to be fed, the situation that the nutrition taken by the sow is insufficient to maintain the lactation requirement can occur, fat stored in a sow body is forced to be used for converting the fat into breast milk, the backfat of the sow during the whole lactation period is rapidly reduced, the body condition is seriously reduced, and the weaning weight and the subsequent breeding performance of the piglets are influenced. Therefore, the nutritional value of the feed for the lactating sows needs to be improved, and the sows can obtain enough nutrition to feed more piglets on the basis of the original feed intake. On the other hand, due to the problem of insufficient milk caused by low nutrient feed intake of sows, the fact that the creep feed is used for supplementing the nutrient requirements of piglets in the actual pig raising production is forced. However, as the intestinal development of piglets is not perfect and the plant protein raw materials cannot be digested and absorbed, the piglets can only be supplemented with the creep feed mainly comprising the expensive animal protein raw materials, which undoubtedly greatly increases the investment of the breeding cost.

In addition, in the existing feed, the sows and the piglets are respectively used as research objects, the daily ration of the sows and the supplementary feed are independently designed, three feeds, namely a creep feed, a pre-nursing period feed and a post-nursing period feed, are independently set for the piglets, and internal connection between the sows and the piglets is not always realized or ignored. Therefore, the contradiction between the nutrition requirement and the breeding benefit of the lactating sows and the piglets before and after weaning needs to be solved urgently.

Disclosure of Invention

In view of the above, the invention provides a series of package type co-feeding compound feed for sows and piglets, which can feed and flexibly allocate the lactating sows and the piglets, and a feeding method thereof, and can effectively reduce concentrated feed for the piglets, greatly save feed cost, and flexibly adjust feeding combination and feeding amount according to the growth cycle of the piglets and the actual breeding.

The sow co-feed compound feed comprises a sow feed and a piglet mixed feed, wherein the sow feed comprises a sow basal feed A and a sow concentrated feed AA, the sow concentrated feed AA is used 3-5 days before delivery or 3-5 days before weaning, the piglet mixed feed comprises the sow basal feed A and a piglet concentrated feed B, during the breeding period, the mass percentage of the sow basal feed A in the piglet mixed feed is increased from 60wt% to 95wt% according to a preset gradient, and is in a proportional increase relationship with the weight of piglets, and the preset gradient is increased by more than 5wt% at intervals according to the weight of the piglets.

The co-feeding and co-feeding method for the sows and the piglets adopts the co-feeding and co-feeding compound feed for the sows and the piglets, and comprises the following steps: feeding the sow basal feed A before the delivery and in the lactation period of the sow, and allowing the piglet to eat the sow basal feed A during the lactation period; feeding the basal feed AA of the sow within 3-5 days before delivery or within 3-5 days after weaning; after the piglets are weaned, feeding the basal feed A of the sows and the concentrated feed B of the piglets, wherein the mass percentage of the basal feed A of the sows fed to the piglets is increased from 60wt% to 95wt% according to a preset gradient during the breeding period, and the content of the basal feed of the sows fed to the piglets is adjusted to be increased in proportion to the weight of the piglets, wherein the preset gradient is increased by more than 5wt% at intervals according to the weight of the piglets.

In the compound feed for the co-feeding of the sows and the piglets and the feeding method thereof, the sows and the piglets are taken as an organic whole and taken as research objects for developing feed products, the sow basal feed A and the piglet concentrate B are adopted, the sow basal feed A can feed the sows and the piglets at the same time, and the piglet concentrate B is flexibly blended according to a preset formula ratio to form a series of compound feeds for the set meal. The compound feed for the mother and the young pigs can form a continuous feed product with nutrient content, the sow feed and the compound feed for the piglets in each stage are consistent with the continuous growth development and physiological stage of the pigs, and the types of feed raw materials are greatly reduced by combining the A feed and the B feed or adding the concentrated feed of the sows, so that the problems of complexity of feeding in a breeding field and operation are solved, the requirement on production equipment is lowered, and the production process is simplified. The basal feed A of the sow is a basal feed product developed by integrating the nutritional requirements and physiological characteristics of a lactating sow and a piglet in the nursery period, the sow can eat the basal feed together, and a sow concentrated feed is added when necessary, wherein the sow concentrated feed contains functional substances for adjusting the reproduction rhythm (hastening parturition, promoting lactation, shortening the birth process and the like) of the sow so as to ensure that the breeding production of the sow can be adjusted according to the actual conditions in a breeding site; on the other hand, the piglet concentrated feed B can be designed according to nutrient components and growth characteristics required by piglets, for example, the piglet concentrated feed B can be added with concentrated nutrient substances and also can contain functional components for promoting piglet intestinal development and preventing piglet diarrhea, and the piglet concentrated feed B is flexible in collocation and simple and easy to implement.

Detailed Description

The following examples illustrate the invention in detail: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed embodiments and processes are given, but the scope of the present invention is not limited to the following embodiments.

The embodiment of the invention provides a co-feeding compound feed for sows and piglets, which comprises a sow feed and a piglet mixed feed, wherein the sow feed comprises a sow basal feed A and a sow concentrated feed AA, the sow concentrated feed AA is used 3-5 days before delivery or 3-5 days before weaning, the piglet mixed feed comprises the sow basal feed A and a piglet concentrated feed B, during the breeding period, the mass percentage of the sow basal feed A in the piglet mixed feed is increased from 60wt% to 95wt% according to a preset gradient, and is in a proportional increase relationship with the weight of the piglets, and the preset gradient is increased by more than 5wt% per certain period according to the weight of the piglets.

The sow concentrated feed AA comprises components for improving the nutrition supply of sows and adjusting the reproduction rhythm of sows, and has the following functions: firstly, when the number born is large, the nutrition is supplemented; secondly, the colostrum is added about 3 days before the sow is born, so that the labor process is shortened, and the secretion of a large amount of colostrum is promoted as early as possible; thirdly, the feed is added 3 days before weaning, so that the sow is promoted to suckle and the piglets are oestrous as early as possible after weaning. The development and design method of the compound feed product for the sows and the piglets follows the scientific principle of simplicity, easy production, easy use and standardization, and carries out the design and development of the feed product.

Preferably, the mass percentage of the sow concentrated feed AA in the sow feed is 0.3-1 wt%. Preferably, the sow concentrate AA is used 3-5 days before parturition, 3-5 days after parturition and 3-5 days before weaning. The compound premix is used 3-5 days before delivery, so that the sow is promoted to start delivery in time, the delivery process is shortened, and the production fatigue of the sow is reduced or avoided; secondly, the sow is promoted to secrete a larger amount of colostrum as soon as possible so as to improve the survival rate and the health degree of the newborn piglet; and thirdly, the nutrition intake of the sows is supplemented. The milk powder is used 3-5 days before weaning, mainly inhibits the milk secretion of sows, and promotes the sows to rapidly estrate after weaning to enter the next production cycle; on the other hand, the piglet is promoted to eat as early as possible and adapt to solid feed.

The basal sow feed A not only serves as daily ration for sows, but also serves as a piglet creep feed for feeding piglets to be eaten in the feeding period of the piglets in the first stage for the feed adaptability of early-stage piglet culture in the lactation period. The characteristics of the nursing sows and the piglets in the aspects of nutrition, ecology and behavior are deeply researched from the viewpoint of respecting the original ecology of the pigs, and the characteristics are found as follows: firstly, the first feed which is contacted and eaten by piglets is always the feed for the suckling sows no matter in a field stocking or large-scale pigsty; secondly, the feeding behavior of the piglets is not inherent, but simulated by the study of the sows in the postnatal period; thirdly, the piglets will not have diarrhea or other diseases caused by eating the feed of the lactating sows. Therefore, sows and piglets are taken as an organic whole and are taken as research objects for developing feed products, the basal feed A of the sows is taken as a piglet creep feed, and the basal feed A of the sows with high proportion is still contained in the mixed feed of the weaned piglets, so that the feed variety is reduced, and the cost is saved.

In one embodiment of the invention, the piglet mixed feed is mainly based on the weight of piglets. Firstly, after 7 days of age in a delivery house, the adaptability of the piglets to the solid feed is raised in advance by taking a basal feed A of a sow as a creep feed. Secondly, in the early stage of the breeding, when the weight of the weaned piglet is between 6.5 and 7kg, the mixed feed fed by the piglet is 60 to 70 weight percent of sow basal feed A and 30 to 40 weight percent of piglet concentrated feed B; thirdly, when the weight of the weaned piglets is between 7 and 7.5kg, the mixed feed fed by the piglets is 75 to 80 weight percent of sow basal feed A and 20 to 25 weight percent of piglet concentrated feed B; fourthly, when the weight of the weaned piglets is between 7.5 and 8kg, the mixed feed fed by the piglets is 85 to 90 weight percent of sow basal feed A and 10 to 15 weight percent of piglet concentrated feed B. Fifthly, when the weight of the weaned piglets is more than 8kg, the mixed feed fed to the piglets is 90-95 wt% of sow basal feed A and 5-10 wt% of piglet concentrated feed B. Sixth, the feeding proportion can be flexibly adjusted according to the market price and the operation and management conditions of the pig farm.

Specifically, when piglets need to be slaughtered in advance or sows need to enter the estrus in advance, 0.3-1wt% of sow concentrated feed AA is added into the sow feed, and 30-40wt% of piglet concentrated feed B is added into the piglet mixed feed for the piglets. When the piglets need to be delayed from slaughtering or the sows need to be delayed from entering the oestrus, the sow concentrated feed AA is not added or is added according to 10% -50% of the original preset addition amount, and the piglet concentrated feed B is not added or is added according to 20% -80% of the preset addition amount according to the content corresponding to the weight standard of the piglet mixed feed. For example, when the market is not good enough, the slaughtering and the breeding cycle of sows are delayed, according to the situation of the sows, when the original addition amount is 0.5wt% of sow concentrate AA accounting for the total sow feed, taking 50% of the original addition as an example, at the moment, the sow concentrate AA only needs to be added by 0.25 wt%, and meanwhile, for delaying the slaughtering of piglets, when the weaning weight of the piglets is between 6.5 and 7kg, the mixed feed fed by the piglets is 70wt% of sow base feed A and 30wt% of piglet concentrate B, the mixed feed is added in a proportion of 50%, namely the actual feeding amount is 85wt% of sow base feed A and 15wt% of piglet concentrate B, and the rest is repeated.

In another embodiment of the invention, the time is used as a judgment basis, the piglets enter a nursing period after weaning, and are divided into a pre-nursing period and a post-nursing period, the mass percentage of the sow basic feed A in the piglet mixed feed is increased from 60wt% to 90wt% according to a preset gradient in the early nursing period, and the mass percentage of the sow basic feed A in the piglet mixed feed is more than 90wt% in the post-nursing period or the sow basic feed A is directly fed. Furthermore, in the early stage of the breeding, the piglet mixed feed comprises a first stage feed and a second stage feed, the first stage feed comprises a sow basal feed A and a piglet concentrate B which are respectively 60-70wt% and 30-40wt% in mass ratio, the second stage feed comprises a sow basal feed A and a piglet concentrate B which are respectively 80-90 wt% and 10-20 wt% in mass ratio, the first stage feed is a feed for the piglet at the 1 week after weaning, and the second stage feed is a feed for the piglet at the 2 week after weaning.

The first-stage feed of the piglets is taken as daily ration at the early stage of weaning, the first-stage feed comprises a first-stage feed and a second-stage feed, the first-stage feed comprises a sow base feed A and a piglet concentrated feed B, the mass ratio of the first-stage feed is 60-80 wt%, the mass ratio of the first-stage feed is 20-40 wt%, and the second-stage feed comprises a sow base feed A and a piglet concentrated feed B, the mass ratio of the second-stage feed is 70-80 wt%, and the mass ratio of the second-stage feed is 20-30 wt%. The feeding period of the first stage feed and the second stage feed is one week. Preferably, the piglet concentrate B with the mass ratio of 10-20 wt% is reduced every 3-7 days until all sows are fed with the basal ration A.

The first-stage feed comprises a first stage and a second stage, and also comprises a third-stage feed and/or a fourth-stage feed, wherein the third-stage feed comprises 70-75wt% of sow base feed A and 25-30wt% of piglet concentrated feed B in a mass ratio, and the fourth-stage feed comprises 75-80wt% of sow base feed A and 20-25wt% of piglet concentrated feed B in a mass ratio. When the feed is raised in four stages, the period of each stage is 3-4 days. The period distribution and the feed formula are obtained by mixing the basal feed A and the concentrated feed of the sows in different proportions according to the growth characteristics and the actual requirements of the piglets, so that the defects of various feed products, raw material mixing, complex production process and high investment of production equipment are avoided.

The feed for the second stage of piglets can be used as daily ration in the nursery stage and can be divided into a nursery early stage and a nursery late stage, the mass ratio of the concentrated feed B for the piglets in the nursery early stage is lower than 10wt%, and the basal feed A for the sows in the nursery late stage is used as basal feed for the piglets, namely the basal feed A for the sows is fed after the nursery late stage.

Specifically, the sow basal feed A comprises the following components in parts by weight:

specifically, the corn is an important energy feed, the available energy is high, the corn is rich in unsaturated fatty acid, for example, the content of linoleic acid can reach 2 wt%, the content of protein is about 7.8-8.6 wt%, the content of fat-soluble vitamin E is about 20mg/kg, the content of lutein is 22mg/kg on average, and the corn becomes a main raw material for providing energy in the feed along with the development of animal husbandry.

The soybean meal provided by the embodiment of the invention is an important protein feed, the protein content is 40-48 wt%, and the lysine content is 2.5-3.0 wt%, and the soybean meal is a main protein feed for livestock and poultry. The 65wt% fish meal of the embodiment of the invention is prepared by degreasing and steam drying sardine, anchovy and mackerel which are used as raw materials. The fish meal is a main high-grade protein source of animals, has good protein quality, high content and easy digestion, and is necessary for high-grade feed.

The soybean oil of the embodiment of the invention is unrefined oil obtained by leaching soybeans with a solvent and filtering. The total content of fatty acid is more than or equal to 90%, the content of non-saponified substances is not more than 2%, and the content of non-soluble substances is not more than 1%, and the feed is an energy source for livestock, poultry and aquatic feeds. The fructose glucose of the present example is aldohexose, and glucose contains five hydroxyl groups, one aldehyde group, and has the properties of polyhydric alcohol and aldehyde. Glucose is an indispensable nutrient for metabolism in the organism.

The calcium hydrogen phosphate of the embodiment of the invention can be used as a feed additive to supplement phosphorus and calcium elements in the feed of poultry and livestock. It can also be used as adjuvant feed for poultry, and can promote digestion of feed, increase weight of poultry, increase meat yield, milk yield, egg yield, and treat rickets, osteomalacia, and anemia of livestock. The organic acid calcium components of the embodiment of the invention are calcium formate, calcium acetate, calcium citrate and the like, and provide calcium element for livestock and poultry.

The intestinal membrane protein provided by the embodiment of the invention is prepared by taking small intestinal mucosa as a substrate, performing a series of protease hydrolysis and special enzyme treatment, taking a specific zymolyte as an excipient, and performing high-temperature, aseptic treatment, drying and other treatment. The product is rich in oligopeptide, has high bioavailability, and can effectively promote growth, relieve weaning stress, improve organism immunity, and reduce diarrhea. The 0.5wt% premix of the present embodiments is a mixture of copper, iron, manganese, zinc, iodine, cobalt, selenium, supplementing the lactating sow's need for trace elements. The 98.5% lysine of the embodiment of the invention is the basic composition unit of the biological functional macromolecular protein and is the basic substance of the protein required by animal nutrition.

The feed-grade sodium chloride provided by the embodiment of the invention provides corresponding sodium ions and chloride ions for livestock and poultry, and maintains the osmotic pressure of extracellular fluid. Participate in the regulation of acid-base balance in vivo. Chloride ions participate in the production of gastric acid in the body. In addition, sodium chloride also has a role in maintaining normal excitability of nerves and muscles.

The benzoic acid provided by the embodiment of the invention is composed of various inorganic and organic acids according to the physiological development characteristics and anti-stress requirements of weaned piglets, and a special processing technology is adopted to stabilize the contents of various acids. The effect of the feed can be transferred to piglets through mother's milk.

The monosodium glutamate provided by the embodiment of the invention is a seasoning phagostimulant, and the main component of the monosodium glutamate is sodium glutamate. The threonine of the embodiment of the present invention is a basic constituent unit of a biofunctional macromolecular protein, and is a basic substance constituting a protein required for animal nutrition. The L-methionine of the embodiment of the present invention is a basic constituent unit of a biologically functional macromolecular protein, and is a basic substance constituting a protein required for animal nutrition.

The 60% choline chloride of the embodiment of the present invention can prevent fat accumulation and tissue degeneration thereof in the liver and kidney. Recombination of amino acids can be facilitated. Can improve the utilization rate of amino acid, especially essential amino acid methionine in vivo. The basic mineral disclosed by the embodiment of the invention meets the basic requirements of sows on trace elements. The complex enzyme provided by the embodiment of the invention is a biological preparation, is rich in protease, amylase, pectinase and the like, and is used as a feed additive. The pig multivitamin provided by the embodiment of the invention can fully meet the nutritional requirements of the pig on vitamins, improve the immunity of the pig and the like. The modified zinc oxide of the embodiment of the invention is formed by oxidizing zinc metal by air after heating and evaporating the zinc metal or by calcining zinc ore to change zinc into steam and oxidizing the steam in air. The additive has the function of transferring the milk after the milk is transferred into the milk of the sow, so as to prevent the piglet from diarrhea. The copper oxychloride of the embodiments of the present invention supplements the needs of lactating sows for free copper. The ferrous sulfate of the embodiments of the present invention supplements the lactating sows for iron requirements. The bactericidal protein provided by the embodiment of the invention is a novel lysozyme, and can effectively inhibit the growth of harmful bacteria. The organic manganese provided by the embodiment of the invention meets the requirement of a manganese element of a sow. The phytase 10000 of the embodiment of the invention is one of enzyme varieties, has a special spatial structure, can sequentially separate phosphorus in phytic acid molecules, degrades phytic acid (salt) into inositol and inorganic phosphorus, and releases other nutrients combined with the phytic acid (salt).

Preferably, the sow concentrate AA comprises the following components in parts by weight:

the corn provided by the embodiment of the invention is an important energy feed, the available energy is high, the corn is rich in unsaturated fatty acid, for example, the content of linoleic acid can reach 2 wt%, the content of protein is about 7.8-8.6 wt%, the content of fat-soluble vitamin E is about 20mg/kg, and the average content of lutein is 22mg/kg, and the corn becomes a main raw material for providing energy in the feed along with the development of animal husbandry.

The soybean meal provided by the embodiment of the invention is an important protein feed, the protein content is 40-48 wt%, and the lysine content is 2.5-3.0 wt%, and the soybean meal is a main protein feed for livestock and poultry. The corn starch of the embodiment of the present invention is a primary product of corn processing, and contains a small amount of fat, protein, and the like. The fructose glucose of the present example is aldohexose, and glucose contains five hydroxyl groups, one aldehyde group, and has the properties of polyhydric alcohol and aldehyde. Glucose is an indispensable nutrient for metabolism in the organism.

The soybean protein concentrate provided by the embodiment of the invention is used as an excellent protein raw material with high digestible protein content, good palatability and extremely low contents of anti-nutritional factors, indigestible oligosaccharides and pathogenic bacteria, is very suitable for the growth needs of weaned piglets, and is an ideal choice for healthy growth of the piglets. The 65wt% fish meal of the embodiment of the invention is prepared by degreasing and steam drying sardine, anchovy and mackerel which are used as raw materials. The fish meal is a main high-grade protein source of animals, has good protein quality, high content and easy digestion, and is necessary for high-grade feed. The soybean oil of the embodiment of the invention is unrefined oil obtained by leaching soybeans with a solvent and filtering. The total content of fatty acid is more than or equal to 90 percent, the content of unsaponifiable matters is not more than 2 percent by weight, and the content of insoluble matters is not more than 1 percent by weight, so the feed is an energy source for livestock, poultry and aquatic feeds.

The intestinal membrane protein provided by the embodiment of the invention is prepared by taking small intestinal mucosa as a substrate, performing a series of protease hydrolysis and special enzyme treatment, taking a specific zymolyte as an excipient, and performing high-temperature, aseptic treatment, drying and other treatment. The product is rich in oligopeptide, has high bioavailability, and can effectively promote growth, relieve weaning stress, improve organism immunity, and reduce diarrhea.

The monosodium glutamate provided by the embodiment of the invention is a seasoning phagostimulant, and the main component of the monosodium glutamate is sodium glutamate. The 0.3wt% premix of the embodiments of the invention is a mixture of copper, iron, manganese, zinc, iodine, cobalt, selenium, supplementing the needs of lactating sows for trace elements. The threonine of the embodiment of the present invention is a basic constituent unit of a biofunctional macromolecular protein, and is a basic substance constituting a protein required for animal nutrition. The feed-grade sodium chloride provided by the embodiment of the invention provides corresponding sodium ions and chloride ions for livestock and poultry, and maintains the osmotic pressure of extracellular fluid. Participate in the regulation of acid-base balance in vivo. Chloride ions participate in the production of gastric acid in the body. In addition, sodium chloride also has a role in maintaining normal excitability of nerves and muscles.

The L-methionine of the embodiment of the present invention is a basic constituent unit of a biologically functional macromolecular protein, and is a basic substance constituting a protein required for animal nutrition.

The 98.5wt% lysine of the embodiment of the present invention is a basic constituent unit of a biofunctional macromolecular protein, and is a basic substance constituting a protein required for animal nutrition. The 60wt% choline chloride of the present embodiment can prevent fat accumulation in the liver and kidney and tissue degeneration thereof. Recombination of amino acids can be facilitated. Can improve the utilization rate of amino acid, especially essential amino acid methionine in vivo. The basic minerals of the embodiments of the present invention meet the basic needs of sows for trace elements.

The growing pig multivitamins provided by the embodiment of the invention can fully meet the nutritional requirements of the pig on vitamins, improve the immunity of the pig and the like. The phytase 10000 of the embodiment of the invention is one of enzyme varieties, has a special spatial structure, can sequentially separate phosphorus in phytic acid molecules, degrades phytic acid (salt) into inositol and inorganic phosphorus, and releases other nutrients combined with the phytic acid (salt).

The cooked malt of the embodiment of the invention is obtained by germinating wheat substances such as barley, wheat and other seeds and then baking the germinated wheat seeds, and has the functions of regulating the start of delivery and lactation or delactation of sows in the lactation period.

The piglet concentrated feed B comprises the following components in parts by weight:

the corn starch of the embodiment of the present invention is a primary product of corn processing, and contains a small amount of fat, protein, and the like. The high-protein whey powder disclosed by the embodiment of the invention is whey powder obtained after dehydration and drying, has the lactose content not less than 65wt%, is good in palatability, is a good energy source for porkets, and can provide high-quality protein. The 30wt% whey protein concentrate of the present example contains casein and whey proteins enriched in the same ratio as skim milk. The enzymolysis soybean protein of the embodiment of the invention is a high-efficiency soybean protein product obtained by combining a multi-strain solid fermentation and liquid enzymolysis process of peeled soybean meal, and provides a protein source with good digestibility and palatability and balanced amino acid for piglets.

The 80wt% milk protein concentrate of the embodiment of the invention is produced by using a mild low-temperature ultrafiltration technology and an advanced spray drying technology, comprises casein and whey protein, retains natural milk calcium, and provides high-quality protein and calcium source for the growth of piglets. The high-fat whey powder of the embodiment of the invention is whey powder coated with fat inside, so that the availability of the fat is improved, and simultaneously, a high-quality protein source is provided. The high-quality protein feed raw material containing 78% of the plasma protein powder provided by the embodiment of the invention has the advantages of good palatability, high protein content, balanced amino acid and high utilization rate, has the effect of enhancing the immunity of the organism, better prevents diseases of piglets, and is an effective protein source for preventing growth retardation and diarrhea of the piglets after weaning.

The fructose glucose of the present example is aldohexose, and glucose contains five hydroxyl groups, one aldehyde group, and has the properties of polyhydric alcohol and aldehyde. Glucose is an indispensable nutrient for metabolism in the organism. The wheat protein hydrolysate of the embodiment of the invention is a high-digestibility water-soluble wheat protein product separated from wheat protein hydrolysate, is light yellow refined powder, and is characterized in that the soybean protein concentrate of the embodiment of the invention has high glutamine content (up to 30wt percent) and is used as an excellent protein raw material with high digestible protein content, good palatability, and extremely low contents of anti-nutritional factors, indigestible oligosaccharides and pathogenic bacteria, thereby being very suitable for the growth requirements of weaned piglets. The fresh whole eggs with the egg powder are pasteurized at a low temperature and processed by a spray drying process, are rich in immunoglobulin and high in energy, and are used for high-grade suckling pig feed and aquatic feed.

The calcium hydrogen phosphate of the embodiment of the invention can be used as a feed additive to supplement phosphorus and calcium elements in the feed of poultry and livestock. It can also be used as adjuvant feed for poultry, and can promote digestion of feed, increase weight of poultry, increase meat yield, milk yield, egg yield, and treat rickets, osteomalacia, and anemia of livestock. The 1% premix of the embodiment of the invention is a mixture of copper, iron, manganese, zinc, iodine, cobalt and selenium, and supplements the piglet's requirement for trace elements.

The citric acid provided by the embodiment of the invention can meet the physiological development characteristics and anti-stress requirements of weaned pigs and can regulate the intestinal health. The organic acid calcium components of the embodiment of the invention are calcium formate, calcium acetate, calcium citrate and the like, and provide calcium element for livestock and poultry. The 98.5wt% lysine of the embodiment of the present invention is a basic constituent unit of a biofunctional macromolecular protein, and is a basic substance constituting a protein required for animal nutrition. The benzoic acid provided by the embodiment of the invention can meet the physiological development characteristics and anti-stress requirements of weaned piglets and simultaneously regulate the intestinal health.

The sodium butyrate provided by the embodiment of the invention can meet the physiological development characteristics and anti-stress requirements of weaned piglets and can regulate the intestinal health. The malic acid provided by the embodiment of the invention meets the physiological development characteristics and anti-stress requirements of weaned pigs, and simultaneously regulates the intestinal health. The 60% choline chloride of the embodiment of the present invention can prevent fat accumulation and tissue degeneration thereof in the liver and kidney. Recombination of amino acids can be facilitated. Can improve the utilization rate of amino acid, especially essential amino acid methionine in vivo.

The methionine of the embodiment of the invention is a basic composition unit of a biological functional macromolecular protein and is a basic substance of the protein required by animal nutrition. The basal ore of the embodiment of the invention meets the basic requirements of piglets on trace elements. The threonine of the embodiment of the present invention is a basic constituent unit of a biofunctional macromolecular protein, and is a basic substance constituting a protein required for animal nutrition.

The complex enzyme provided by the embodiment of the invention is a biological preparation, is rich in protease, amylase, pectinase and the like, and is used as a feed additive. The growing pig multivitamins provided by the embodiment of the invention fully meet the nutritional requirements of the pig on vitamins, improve the growth speed and immunity of the pig and improve the carcass color of the pork pig. The microbial preparation provided by the embodiment of the invention mainly comprises probiotics such as lactic acid bacteria and bacillus subtilis, and is used for adjusting the intestinal health of piglets and improving the digestibility and absorptivity of nutrition.

The modified zinc oxide of the embodiment of the invention is formed by oxidizing zinc metal by air after heating and evaporating the zinc metal or by calcining zinc ore to change zinc into steam and oxidizing the steam in air. The additive has the function of transferring the milk after the milk is transferred into the milk of the sow, so as to prevent the piglet from diarrhea. The tryptophan of the embodiment of the invention is a basic composition unit of a biological functional macromolecular protein and is a basic substance of the protein required by animal nutrition. The phytase 10000 of the embodiment of the invention is one of enzyme varieties, has a special spatial structure, can sequentially separate phosphorus in phytic acid molecules, degrades phytic acid (salt) into inositol and inorganic phosphorus, and releases other nutrients combined with the phytic acid (salt).

The embodiment of the invention also provides a co-feeding and co-feeding method for the piglets, which adopts the co-feeding and co-feeding mixed feed for the piglets, and comprises the following steps: feeding the sow basal feed A before the delivery and in the lactation period of the sow, and allowing the piglet to eat the sow basal feed A during the lactation period; feeding the basal feed AA of the sow within 3-5 days before delivery or within 3-5 days after weaning; after the piglets are weaned, feeding the basal feed A of the sows and the concentrated feed B of the piglets, wherein the mass percentage of the basal feed A of the sows fed to the piglets is increased from 60wt% to 95wt% according to a preset gradient during the breeding period, and the content of the basal feed of the sows fed to the piglets is adjusted to be increased in proportion to the weight of the piglets, wherein the preset gradient is increased by more than 5wt% at intervals according to the weight of the piglets. The number of days before and after the delivery of the sow is preferably 3 days before and 3 days after the delivery, during which the nutrition of the sow is supplemented, 0.3-1wt% of sow concentrated feed AA is added.

In practical application, when piglets need to be slaughtered or sows need to enter the oestrus stage in advance, 0.3-1wt% of sow concentrate AA is added to the sows, 0.5wt% of sow concentrate AA is preferably added to the sows, and 30-40wt% of piglet concentrate B is added to the piglets, and 40wt% of piglet concentrate B is preferably added to the piglets.

The formulation of the formula of the co-feeding compound feed for piglets and the feeding method thereof, and the performance index and effect of the obtained biological feed are illustrated by a plurality of examples.

Experiment one

150 sows to be born, which have the same strain, are healthy, have no diseases, are similar in weight and gestational age and have the same litter size, and enter a birthing house, are selected and randomly divided into two groups, wherein 75 sows in each group are selected. Control group: feeding the common lactating sow compound feed 7 days before the delivery of the sow and the lactating sow; experimental groups: the basal feed provided by the embodiment of the invention is fed to sows 7 days before delivery and lactating sows, and 0.5wt% of sow concentrated feed AA is added into the basal feed 3 days before delivery and 3 days after delivery respectively. The feeding management is operated according to the daily management rules of the pig farm. And recording data such as daily feed intake, birth process, weaning backfat loss, piglet survival rate, 7-day postweaning estrus rate and the like of the sows, performing statistical analysis, and comparing experimental effects.

TABLE 1 comparison of reproductive performance of sows fed with different feeds

As can be seen from Table 1, compared with the control group, the average daily food consumption of the lactating sows fed with the basic ration of the embodiment of the invention is basically equivalent (5.23kg vs 5.25kg) from the perinatal period when the lactating sows enter the farrowing house to the whole period when the piglets are weaned out of the delivery house, the production period is shortened by 21.88% (0.7h), the weaning backfat loss is reduced by 42.35% (1.08mm), the oestrus rate is improved by 3 percent after 7 days of weaning, and the survival rate of the piglets is improved by 4.03 percent. The above indexes indicate that the basal feed fed by the embodiment of the invention has the following characteristics under the condition that the feed intake is kept unchanged: (1) the labor process can be shortened, the sow can quickly recover from the delivery fatigue to eat, so that enough lactation amount is ensured for the growth of the piglet, the sow can maintain good body condition during lactation, and the survival rate of the piglet is improved; (2) the back fat loss of the sows during lactation can be reduced, and good body condition storage is provided for the next breeding cycle; (3) the oestrus rate of the piglets 7 days after weaning is improved, so that the production performance and the economic benefit of the whole pig farm are directly improved. The number of the existing breeding sows in the field of China is 3500 ten thousand, each sow has 2.2 births per year, each birthing gives a 10-head piglet, and each piglet wins 500 yuan (based on the current market price), and when the basic ration of the embodiment of the invention is used for feeding the lactating sows, the winning of 270.65 billion yuan can be increased per year in the pig breeding industry of China.

Experiment two

400 weaned piglets of the same batch with the same genetic background and age of about 21 days are selected and randomly divided into 4 groups of 100 piglets each, 10 repetitions each and 10 repetitions each. The control group is fed with a commercial common weaned piglet creep feed, and the experimental group 1 is fed with the mixed feed of 60wt% of basic ration and 40wt% of piglet concentrated feed in the embodiment of the invention and is continuously fed for two weeks; experimental group 2 was fed with the mixed feed of 60wt% basal diet + wt 40% piglet concentrate of the example of the present invention for the first week and the mixed feed of 70wt% basal diet +30 wt% piglet concentrate of the example of the present invention for the second week; experimental group 3 was fed with a mixed feed of 60wt% base ration +40 wt% piglet concentrate for the first 3 days after weaning, followed by feeding a mixed feed of 70wt% base ration +30 wt% piglet concentrate of the present example for the second 3 days, followed by feeding a mixed feed of 75wt% base ration +25 wt% piglet concentrate of the present example for the third 4 days, followed by feeding a mixed feed of 80wt% base ration +20 wt% piglet concentrate of the present example for the third 4 days. The feeding management is operated according to the daily management rules of the pig farm. And recording initial and final body weights of the experiment, daily feed intake and diarrhea conditions, and statistically analyzing growth performance indexes such as average daily feed intake, average daily gain, feed-meat ratio and the like after the experiment is finished, and comparing feeding effects of different feeds.

TABLE 2 comparison of growth Performance of weaned piglets fed with different feeds

As can be seen from table 2, compared with the standard commercial creep feed, the experimental feeds (experimental group 1, experimental group 2 and experimental group 3) prepared by mixing the piglet concentrates with different proportions by using the basic compound feed of different embodiments of the present invention have equivalent effects to the standard commercial creep feed in terms of average daily feed intake, average daily gain and piglet health level (diarrhea rate), and have no significant difference, which indicates that the commercial creep feed can be completely replaced by mixing the daily ration of the embodiments of the present invention according to different proportions.

TABLE 3 comparison of feed costs for weaned piglets fed on different diets (in terms of cost of feed for single piglets)

Note: the price of the commercial milk replacer is 8000 yuan/ton; 3600 yuan/ton of the basic compound feed provided by the embodiment of the invention; the piglet concentrated feed provided by the embodiment of the invention is 10000 yuan/ton.

As can be seen from table 3, compared with the control group, the feed cost can be saved by 21.39% by the feeding scheme of the experimental group 1, 28.75% by the feeding scheme of the experimental group 2, and 34.98% by the feeding scheme of the experimental group 3. According to the method, 3500 million sows can be bred and stocked in the field at present in China, 2.2 births per year are produced in each births, 10 piglets are born in each births, 5.18kg of creep feed is required for each piglet, 8000 yuan per ton of creep feed is required for feeding common commercial creep feed, 319 billion yuan is required for feeding the common commercial creep feed, and the cost of the mixture of the basic compound feed and the piglet creep feed provided by the embodiment of the invention can be respectively saved by adopting three mixing schemes of an experimental group 1, an experimental group 2 and an experimental group 3, so that the cost can be respectively saved by 68.23 billion yuan, 91.71 billion yuan and 111.59 billion yuan, and the economic benefit and the environmental compatibility of the pig breeding industry in China can be greatly improved.

Experiment three

300 piglets of the same batch of nursery early-stage piglets with the same genetic background and weight of about 11kg are selected and randomly divided into 3 groups, each group comprises 100 piglets, each group comprises 10 repetitions, and each repetition comprises 10 piglets. The control group is fed with commercial common early-stage nursing feed, and the experimental group 1 is fed with the basic compound feed of the embodiment of the invention and continuously fed for two weeks; experiment group 2 the experiment group was fed the mixed feed of 90wt% basal formula feed +10 wt% piglet concentrate of the present invention in the first week and the basal formula feed of the present invention in the second week. The feeding management is operated according to the daily management rules of the pig farm. And recording initial and final body weights of the experiment, daily feed intake and diarrhea conditions, and statistically analyzing growth performance indexes such as average daily feed intake, average daily gain, feed-meat ratio and the like after the experiment is finished, and comparing feeding effects of different feeds.

TABLE 4 comparison of growth performance of piglets fed with different feeds at early stage of nursing

As shown in table 4, compared with the piglets fed with the control group fed with the conventional pre-nursing feed, the piglets fed with the basic formula feed (experimental group 1), the basic formula feed invented by the invention and the concentrated feed for piglets (experimental group 2) at the pre-nursing period of the invention have the tendency and difference of improving the growth performance such as average daily feed intake, average daily gain and feed-meat ratio; compared with a control group, the average daily feed intake of the experimental group 1 is equivalent to the average daily gain and the feed conversion ratio, but the diarrhea rate is improved by 7.46 percent, and the health level of piglets is slightly reduced; the average daily feed intake of the piglets in the early stage of nursing in the experimental group 2 is 2.19 percent higher than that of the piglets in the control group, the average daily gain is improved by 17.00 percent, the feed-meat ratio is reduced by 12.26 percent, the diarrhea rate is only 5.31 percent and is reduced by 52.25 percent, and the health level of the piglets is greatly improved and reaches the significance level. This shows that in the actual pig production, 90% of the basic formula feed of the example of the invention with 10% of the supplemental concentrate of the example of the invention has better growth performance on pre-nursery piglets (first week) than the conventional pre-nursery feed and the basic formula feed of the example of the invention fed all the way through the pre-nursery period.

TABLE 5 comparison of piglet feed cost (in terms of single piglet feed cost) at early stage of nursing with different daily rations

Note: (1) 4500 yuan/ton of common nursing materials at the early stage; 3600 yuan/ton of the basic compound feed provided by the embodiment of the invention;

the daily ration of the piglet in the early stage of nursing in the experimental group consists of 90 percent of the basal compound feed for the lactating sow in the embodiment of the invention and 10 percent of the compound feed for the weaned piglet in the embodiment of the invention, so the unit price of the feed is 90 percent × 3600 and 10 percent × 10000 which is 4240 yuan/ton;

as shown in table 5, based on 3500 million barns of currently bred sows in China, 2.2 births per year, 10 litter volume per litter, an average daily feed intake of 600 g/day for each piglet at the early stage of nursing, and a price of 4500 yuan/ton for the feed at the early stage of nursing, the feed cost of the basic compound feed (experimental group 1) or the feed concentrate for the piglet used in combination (experimental group 2) in the embodiment of the present invention is saved by 20.29% and 15.84%, and by using the basic compound feed or the feed concentrate for the piglet in combination in the embodiment of the present invention, the feed cost can be respectively saved by 58.59 yuan and 45.74 yuan (except for the beneficial effect of improving the health level) on the basis of ensuring the same growth performance level as the feed at the early stage of nursing.

Experiment four

200 piglets with the same genetic background and weight of about 18kg in the later stage of nursing in the same batch are selected and randomly divided into two groups, wherein each group comprises 100 piglets, each group comprises 10 repetitions, and each repetition comprises 10 piglets. The control group is fed with commercial piglet feed at the later stage of ordinary nursing, and the experimental group is fed with the basic compound feed of the embodiment of the invention, and the control group and the experimental group are both fed continuously for two weeks. The feeding management is operated according to the daily management rules of the pig farm. And recording initial and final body weights of the experiment and daily feed intake, and statistically analyzing growth performance indexes such as average daily feed intake, average daily gain, feed-meat ratio and the like after the experiment is finished, and comparing feeding effects of different feeds.

TABLE 6 comparison of growth performance of piglets fed with different feeds at later stage of conservation

As shown in table 6, compared with the piglets of the control group fed with the ordinary commercial post-nursing feed, the piglets fed with the basic formula feed of the embodiment of the invention have no significant difference in growth performance, such as average daily feed intake, average daily gain and feed conversion ratio. This indicates that in the actual pig production, the basic compound feed of the embodiment of the invention can replace the common feed in the later period of nursing.

TABLE 7 comparison of piglet feed costs (in terms of single piglet feed cost) at the later stage of nursing when feeding different daily rations

Note: the commercial common post-nursing compound feed is 4000 yuan/ton, and the basic compound feed of the embodiment of the invention is 3600 yuan/ton

As shown in Table 7, compared with 3500 ten thousand sows stored in the nursery of China, 2.2 births per year, 10 litter volume per litter, 900 g/day of average daily feed intake of piglets at the later stage of nursing, and 4000 yuan/ton of feed price at the later stage of nursing, the basal compound feed for the lactating sows disclosed by the embodiment of the invention saves 10.15% of feed cost, and by adopting the basal compound feed disclosed by the embodiment of the invention to feed the piglets at the later stage of nursing, the feed cost can be saved by 2.81 yuan on the basis of ensuring the same growth performance level as that of the commercial ordinary feed at the later stage of nursing.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.

Claims

1. A co-feeding compound feed for sows and piglets comprises a sow feed and a piglet mixed feed, wherein the sow feed comprises a sow basal feed A and a sow concentrated feed AA, the sow concentrated feed AA is used 3-5 days before delivery or 3-5 days before weaning, the piglet mixed feed comprises a sow basal feed A and a piglet concentrated feed B, during the nursing period, the mass percentage of the basal feed A of the sow in the piglet mixed feed is increased from 60wt percent to 95wt percent according to a preset gradient, the predetermined gradient is increased by more than 5wt% according to the weight of the piglets at intervals of a certain period, the nursing period is divided into a pre-nursing period and a late nursing period, in the early stage of the breeding, when the weight of the weaned piglet is between 6.5 and 7kg, the mixed feed fed by the piglet is 60 to 70 weight percent of sow basal feed A and 30 to 40 weight percent of piglet concentrated feed B; when the weight of the weaned piglets is between 7 and 7.5kg, the mixed feed fed by the piglets is 75 to 80 weight percent of sow basal feed A and 20 to 25 weight percent of piglet concentrated feed B; when the weight of a weaned piglet is 7.5-8kg, the mixed feed fed by the piglet is 85-90 wt% of sow basal feed A and 10-15wt% of piglet concentrated feed B, and the sow basal feed A comprises the following components in parts by weight:

corn 7.8wt% 600-700-

43wt% of 200-250 of soybean meal

65wt% fish meal 10-30

10-20 parts of soybean oil

Fructose 10-30

Calcium hydrogen phosphate 10-30

5-7 parts of organic acid calcium

Intestinal membrane protein 5-7

0.5wt% premix 5-7

98.5wt% lysine 3-5

Feed grade sodium chloride 3-5

Benzoic acid 3-5

3-5 parts of monosodium glutamate

Threonine 1.5-2

L-methionine 1.5-2

60wt% choline chloride 1-2

Basic mineral 0.8-1.2

0.3-0.5 of complex enzyme

Pig multivitamin 0.25-0.5

0.3-0.5 of modified zinc oxide

0.1-0.15 parts of basic copper chloride

Ferrous sulfate 0.08-0.12

Bactericidal protein 0.1-0.2

Organic manganese 0.08-0.1

Phytase 100000.05-0.1, the phytase,

the sow concentrated feed AA comprises supplementary nutritional ingredients and functional ingredients for improving the main immunity and the anti-stress capability and regulating the reproduction rhythm, and comprises the following components in parts by weight:

corn 7.8wt% 500-

43wt% of soybean meal 180-

Corn starch 80-120

Fructose 20-30

Soybean protein concentrate 20-30

65wt% fish meal 15-30

10-20 parts of soybean oil

Calcium hydrogen phosphate 10-20

10-20 parts of intestinal membrane protein

3-5 parts of organic acid calcium

Monosodium glutamate 2-4

0.3wt% premix 2-4

Threonine 1-2.5

Feed grade sodium chloride 1-3

L-methionine 1.5-2

98.5wt% lysine 1.1-3

60wt% choline chloride 0.8-1.2

0.4-0.6% of basic mineral

Growing pig multivitamin 0.28-0.35

Phytase 100000.08-0.1

0.005-0.02 of cooked malt;

400-500-one of corn starch

High protein whey powder 120-

30wt% whey protein concentrate 40-60

40-60 enzymolysis soybean protein

80wt% milk protein concentrate 40-60

40-60 parts of high-fat whey powder

78wt% plasma protein powder 30-50

Fructose 30-50

Wheat protein hydrolysate 20-40

Soybean protein concentrate 10-25

10-20 parts of egg powder

Calcium hydrogen phosphate 10-15

1wt% premix 8-10

3-6 parts of citric acid

3-6 parts of organic acid calcium

98.5wt% lysine 3-5

Benzoic acid 2-4

Sodium butyrate 2-4

2-4 parts of malic acid

60wt% choline chloride 1-2.5

Methionine 1-2

0.8-1.0% of base ore

Threonine 0.5-1

0.3-0.6 of complex enzyme

Growing pig multivitamin 0.35-0.6

0.3-0.5 of microbial preparation

0.3-0.5 of modified zinc oxide

Tryptophan 0.2-0.3

Phytase 100000.08-0.1;

the 0.5wt% premix comprises a mixture of copper, iron, manganese, zinc, iodine, cobalt, selenium.

2. The co-feed compound feed for the sows and the piglets as claimed in claim 1, wherein the mass percentage of the basal feed A of the sows in the mixed feed for the piglets at the later stage of the breeding is 90-95 wt%.

3. The co-feeding compound feed for the piglets as claimed in claim 1, which is characterized in that the compound feed for the piglets as claimed in claim 1 is fed in four stages, the compound feed for the piglets fed in the first stage comprises a sow base feed A and a piglet concentrate B which are 60-65wt% and 35-40wt% respectively, the compound feed for the piglets fed in the second stage comprises a sow base feed A and a piglet concentrate B which are 65-70wt% and 30-35wt% respectively, the period of the first stage and the second stage is 3-4 days, the first stage and the second stage belong to the nursery early stage and the weaning period of the piglets is 6.5-7kg, and the compound feed for the piglets fed in the third stage comprises a sow base feed A and a piglet concentrate B which are 70-75wt% and 25-30wt% respectively, the third stage is a feeding period increased on the basis of the first stage and the second stage, the piglet mixed feed fed in the fourth stage comprises 75-80wt% of sow basal feed A and 20-25wt% of piglet concentrated feed B in mass ratio, and the fourth stage corresponds to a stage of nursing early stage and 7.5-8kg of piglet weaning weight.

4. The co-feed formula feed for the piglets as claimed in claim 1, wherein the mixed feed for the piglets is 90wt% -95wt% of sow basal feed A and 5wt% -10wt% of piglet concentrate B when the weight of the piglets at weaning is more than 8 kg.

5. The co-feed compound feed for the sows as claimed in claim 1, wherein the basal feed A for the sows is also used as a piglet creep feed for the adaptability of the pre-bred piglets to solid feed in the feeding period of the piglets, and the mass percentage of the concentrated feed AA for the sows in the feed for the sows is 0.3-1 wt%.

6. The co-feed compound feed for the piglets as claimed in claim 4, wherein when the piglets need to be slaughtered or the sows need to enter the estrus in advance, 0.3-1wt% of the sow concentrated feed AA is added into the sow feed, and 30-40wt% of the piglet concentrated feed B is added into the piglet mixed feed; when the piglets need to be delayed from slaughtering or the sows need to be delayed from entering the oestrus, the sow concentrated feed AA is not added or is added according to 10% -50% of the original preset addition amount, and the piglet concentrated feed B is not added or is added according to 20% -80% of the preset addition amount according to the content corresponding to the weight standard of the piglet mixed feed.

7. A method for co-feeding a piglet, which comprises the following steps: feeding the sow basal feed A before the delivery and in the lactation period of the sow, and allowing the piglet to eat the sow basal feed A during the lactation period; feeding the basal feed AA of the sow within 3-5 days before delivery or within 3-5 days after weaning; feeding the basal feed A and the concentrate B of the piglets after the weaning of the piglets, wherein the mass percentage of the basal feed A of the sows fed to the piglets is increased from 60wt% to 95wt% according to a predetermined gradient during the breeding period, and the basal feed of the sows fed to the piglets is adjusted by feeding the piglets with the compound feed according to any one of claims 1 to 6, wherein the predetermined gradient is increased by more than 5wt% according to the weight of the piglets at certain intervals.