Slow-sinking expanded compound feed for siganus oramin and preparation method and application thereof
Technical Field
The invention belongs to the technical field of fish feed, and relates to slow-sinking expanded compound feed for siganus guttatus, a preparation method and application thereof.
Background
Siganidae (Siganidae) are distributed from east to the middle of the pacific in africa, south to australia, north to japan. The method is mainly produced in the south China sea, the south east China sea and other sea areas. The fish meat is tender in texture, delicious in taste and free of muscle pricks, is deeply loved by consumers, has larger and larger market demand in recent years, and the scale of seawater intensive culture is gradually enlarged, so that better economic benefit is obtained. The siganus oramin belongs to demersal fish, takes algae, copepods, crustaceans, fish larvae and the like as food, belongs to omnivorous fish, and also takes artificial compound feed.
The traditional floating feed has many advantages, but is not beneficial to the ingestion of the bluefish living on the bottom layer. The sinking feed has the defects of easy dissolution, erosion, dispersion, easy water pollution and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a slow-sinking expanded compound feed for siganus guttatus as well as a preparation method and application thereof. The feed is suitable for intensive siganus oramin cage culture, and compared with the traditional floating feed, the feed more conforms to the ingestion habit of siganus guttata, the feed utilization rate is higher, the ingestion among individuals is more uniform, and the fish body specification is more regular.
The purpose of the invention can be realized by the following technical scheme:
a slow-sinking expanded compound feed for siganus oramin comprises the following components in parts by weight: 34-42 parts of fish meal, 18-22 parts of flour, 1-3 parts of seaweed gel, 20-24 parts of soybean meal, 1-3 parts of corn protein powder, 2-5 parts of cassava starch, 1-4 parts of vital gluten, 2-4 parts of fish oil, 1-2 parts of phospholipid oil, 1-2 parts of monocalcium phosphate, 0.2-0.5 part of choline chloride, 1-2 parts of a marine fish premix and 0.1-0.2 part of macleaya cordata.
Further, the feed also comprises the following components in parts by weight: 0.1-0.2 part of mildew preventive and 0.01-0.03 part of antioxidant. In order to prolong the storage time of the feed, a mildew inhibitor and an antioxidant can be added.
Further, the mildew preventive is propionic acid, and the antioxidant is ethoxyquinoline.
Further, the feed also comprises the following components in parts by weight: lysine 0.3-1 weight portions and methionine 0.2-0.5 weight portions. Lysine and methionine can be added to meet the growth requirement of the siganus oramin and ensure that the culture effect of the feed is better.
Further, the feed is prepared by adopting an extrusion and expansion process.
Furthermore, the finished product of the feed has the expansion degree of 1.1-1.3, the volume weight of 580-620g/L, the water content of 8-9.5 percent, the floating rate of less than 5 percent, the thickness of 1.2-1.8cm and the water-resistant time of more than or equal to 2 hours.
Further, every 1kg of the premix for the marine fish comprises the following components: 0.75g of vitamin A (50 ten thousand IU/g), 0.15g of vitamin D3(50 ten thousand IU/g), 6.0g of 50% vitamin E, 30.93g of vitamin K, 10.6g of vitamin B, 20.6 g of vitamin B, 60.6 g of vitamin B, 120.004g of vitamin B, 10.5g of vitamin C, 2.4g of D-calcium pantothenate, 4.5g of nicotinamide, 0.19g of folic acid, 0.01g of D-biotin, 4.5g of inositol, 14.49g of zinc sulfate monohydrate, 7.86g of manganese sulfate monohydrate, 2.4g of copper sulfate pentahydrate, 60g of ferrous sulfate monohydrate, 1.6g of 5% cobalt chloride, 1.6g of 5% calcium iodate, 0.4g of 5% sodium selenite and 879.916g of carrier (rice chaff and mountain flour).
A preparation method of slow sinking expanded compound feed for siganus oramin comprises the following steps:
1) premixing: putting the premix of the marine fish, macleaya cordata, seaweed glue and choline chloride into a premixing machine for premixing to obtain a premixing agent;
2) primary crushing: crushing the soybean meal and the corn protein powder for the first time to obtain a crushed material;
3) primary mixing: putting fish meal, flour, wheat gluten, cassava starch and calcium dihydrogen phosphate and the primary crushed materials in the step 2) into a mixer for primary mixing to obtain a primary mixture;
4) superfine grinding: putting the primary mixture obtained in the step 3) into an ultrafine grinder for ultrafine grinding to obtain ultrafine powder;
5) and (3) secondary mixing: putting the superfine crushed material in the step 4), the phospholipid oil and the premixing agent in the step 1) into a mixer for secondary mixing to obtain a secondary mixture;
6) tempering: putting the secondary mixture obtained in the step 5) into a conditioner for conditioning to obtain a conditioned substance;
7) puffing and granulating: putting the quenched and tempered material obtained in the step 6) into a double-screw bulking machine, and performing bulking and granulation to obtain a bulked material;
8) drying: putting the puffed material obtained in the step 7) into a horizontal drying box for drying;
9) oil spraying: putting the dried puffed material into a roller spraying machine for spraying the fish oil;
10) and (3) cooling: and (3) putting the puffed material sprayed with the grease into a cooling tower for cooling to obtain the feed.
Further, in the step 2), the fineness after primary crushing is as follows: 90% of the primary crushed material passes through a standard sieve with 60 meshes;
in the step 4), the fineness after the superfine grinding is as follows: passing 92-95% of the superfine powder through a 80-mesh standard sieve;
in the step 3) and the step 5), after mixing, the variation coefficient of the mixing uniformity is less than 7 percent;
in the step 6), in the quenching and tempering process, the steam pressure is 0.3-0.4Mpa, the quenching and tempering temperature is 102-105 ℃, the quenching and tempering time is 100-140s, and the water content after quenching and tempering is 25-28 wt%;
in the step 7), the expansion temperature is 102-105 ℃ and the expansion coefficient is 1.1-1.3 in the expansion granulation;
in the step 8), in the drying process, the drying temperature is 95-100 ℃, the drying time is 15-30min, and the moisture of the dried expanded material is 9-10 wt%.
An application of slow sinking expanded compound feed for siganus oramin in siganus guttatus culture.
The seaweed gel is a necessary component for preparing the slow-settling puffed compound feed. The seaweed gel is a natural seaweed extract, has the characteristics of high gelling property and high stability, can improve the cohesiveness of the feed and the stability in water, has the advantages of difficult collapsibility and good viscoelasticity of feed particles in water, improves the utilization rate of the feed, and reduces waste and pollution; and its natural components are easy to digest and have no harmful substances.
The macleaya cordata is rich in alkaloids and flavonoids, has the effects of resisting bacteria, diminishing inflammation and promoting growth, and is a component for improving the immunity of the siganus oramin and promoting growth.
Compared with the prior art, the slow sinking feed is produced by an extrusion and puffing process, the sinking speed is slow, a certain time can be kept in the process of descending in water, the cultured siganus guttatus has enough ingestion time, and the slow sinking feed is suitable for the fishes living in the lower layer of the water body. Compared with the traditional floating feed, the slowly sinking expanded compound feed disclosed by the invention better conforms to the ingestion habit of siganids, the feed utilization rate is higher, the ingestion among individuals is more uniform, and the fish body specification is more regular; compared with sinking feed, the slowly sinking puffed compound feed also has the characteristics of difficult erosion and collapse and difficult water pollution.
Detailed Description
The present invention will be described in detail with reference to specific examples. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
a slow-sinking puffed compound feed for siganus oramin is prepared by mixing the following raw material components in proportion:
35% of fish meal; 20% of flour; 2% of seaweed gel; 22.7% of soybean meal; 3% of corn protein powder; 3% of cassava starch; 3% of wheat gluten; 4% of fish oil; 2% of phospholipid oil; 2% of calcium dihydrogen phosphate; choline chloride (50%) 0.3%; 2% of seawater fish premix; 98% L-lysine salt 0.6%; 0.3% of 60% DL-methionine salt; macleaya cordata 0.1%. All percentages are by weight.
In order to verify the breeding effect of the feed, a control feed 1 is prepared according to the formula of the traditional puffed compound feed for the siganus guttatus, and the nutritional indexes of the feed are the same as those of the feed in example 1. The raw material components of the control feed 1 are mixed according to the following proportion:
35% of fish meal; 20% of flour; 22.7% of soybean meal; 3% of corn protein powder; 3% of cassava starch; 3% of wheat gluten; 4% of fish oil; 2% of phospholipid oil; 2% of calcium dihydrogen phosphate; choline chloride (50%) 0.3%; 2% of seawater fish premix; 98% L-lysine salt 0.6%; 0.3% of 60% DL-methionine salt; 2.1 percent of bentonite. All percentages are by weight. Wherein the bentonite is used as filler and has no nutritive value.
The feed is prepared according to the process requirement of the slow-sinking puffed compound feed by adopting the proportion. The specific process parameters are as follows: coefficient of variation of raw material mixing uniformity: C.V. < 7%; crushing fineness of raw materials: 92-95% of the raw material passes through a standard sieve of 80 meshes; steam pressure of quenching and tempering: 0.35 Mpa; hardening and tempering temperature: 102-105 ℃; moisture after tempering: 25 to 28 percent; coefficient of expansion: 1.1-1.3; and (3) volume weight of a finished product: 580-620 g/L; thickness of the finished product: 1.2-1.8 cm; moisture content of a finished product: 8% -9.5%; the floating rate is less than 5 percent; the water-resistant time is more than or equal to 2 hours.
The control feed 1 is prepared by adopting the process requirement of the traditional buoyancy puffing compound feed. The specific process parameters are as follows: coefficient of variation of raw material mixing uniformity: C.V. < 7%; crushing fineness of raw materials: 88-92% of the raw material passes through a standard sieve of 80 meshes; steam pressure of quenching and tempering: 0.35 Mpa; hardening and tempering temperature: 100 ℃ to 102 ℃; moisture after tempering: 25 to 28 percent; coefficient of expansion: 1.6-1.8; and (3) volume weight of a finished product: 340-380 g/L; moisture content of a finished product: 8% -9.5%; the floating rate is more than or equal to 95 percent; the water-resistant time is more than or equal to 2 hours.
A contrast culture test is carried out on the sea cages in Shanghai county, Umbeca, Shangxi, Tokyo, village, and the sea cages, the weather, the water temperature and the ingestion activity condition of the siganus are observed and recorded every day, the artificial feeding is carried out 6-8 times every day, and the feeding amount is based on the fact that most fish schools do not eat continuously. The specific cultivation conditions are as follows:
TABLE 1
The test period from 5 days 6 in 2017 to 13 days 9 in 2017 ends for a total of 100 days, and the test results are shown in table 2:
TABLE 2
Index (I)
|
Adult fish specification
|
Daily gain
|
Coefficient of bait
|
Fullness of fertilizer
|
Survival rate
|
Example 1
|
150g±20g
|
1.45 g/day
|
1.8
|
2.7g/cm3 |
88%
|
Control feed 1
|
140g±30g
|
1.35 g/day
|
2.0
|
2.5g/cm3 |
75% |
The test result shows that: compared with the traditional floating expanded compound feed, the slow sinking expanded compound feed has the advantages of high growth speed, regular specification, small individual weight difference, low feed coefficient, high fullness and survival rate and good growth performance.
Example 2:
a slow-sinking puffed compound feed for siganus oramin is prepared by mixing the following raw material components in proportion:
38% of fish meal; 18% of flour; 3% of seaweed gel; 20.6% of soybean meal; 3% of corn protein powder; 3% of cassava starch; 3% of wheat gluten; 4% of fish oil; 2% of phospholipid oil; 2% of calcium dihydrogen phosphate; choline chloride (50%) 0.3%; 2% of seawater fish premix; 98% L-lysine salt 0.6%; 0.3% of 60% DL-methionine salt; macleaya cordata 0.2%. All percentages are by weight.
In order to verify the culture effect of the embodiment 2, the control feed 2 is prepared according to the formula of the traditional expanded compound feed for the siganus oramin, and the nutritional indexes of the control feed are the same as those of the embodiment 2. The raw material components of the control feed 2 are mixed according to the following proportion:
38% of fish meal; 18% of flour; 20.6% of soybean meal; 3% of corn protein powder; 3% of cassava starch; 3% of wheat gluten; 4% of fish oil; 2% of phospholipid oil; 2% of calcium dihydrogen phosphate; choline chloride (50%) 0.3%; 2% of seawater fish premix; 98% L-lysine salt 0.6%; 0.3% of 60% DL-methionine salt; 3.2 percent of bentonite. All percentages are by weight. Wherein the bentonite is used as filler and has no nutritive value.
The feed is prepared according to the process requirements of the slow-sinking puffed compound feed by adopting the mixture ratio, and the specific process parameters are as follows: coefficient of variation of raw material mixing uniformity: C.V. < 7%; crushing fineness of raw materials: 92-95% of the raw material passes through a standard sieve of 80 meshes; steam pressure of quenching and tempering: 0.35 Mpa; hardening and tempering temperature: 102-105 ℃; moisture after tempering: 25 to 28 percent; coefficient of expansion: 1.1-1.3; and (3) volume weight of a finished product: 580-620 g/L; thickness of the finished product: 1.2-1.8 cm; moisture content of a finished product: 8% -9.5%; the floating rate is less than 5 percent; the water-resistant time is more than or equal to 2 hours.
The control feed 2 is prepared by adopting the process requirement of the traditional buoyancy puffing compound feed. The specific process parameters are as follows: coefficient of variation of raw material mixing uniformity: C.V. < 7%; crushing fineness of raw materials: 88-92% of the raw material passes through a standard sieve of 80 meshes; steam pressure of quenching and tempering: 0.35 Mpa; hardening and tempering temperature: 100 ℃ to 102 ℃; moisture after tempering: 25 to 28 percent; coefficient of expansion: 1.6-1.8; and (3) volume weight of a finished product: 340-380 g/L; moisture content of a finished product: 8% -9.5%; the floating rate is more than or equal to 95 percent; the water-resistant time is more than or equal to 2 hours.
Carrying out culture tests in seawater cages of Tourpur towns in Dongshan county of Fujian province, observing and recording weather, water temperature and ingestion activity conditions of siganus every day, and manually feeding for 6-8 times every day, wherein the feeding amount is based on that most fish schools do not continuously eat food. The specific cultivation conditions are shown in table 3 below.
TABLE 3
The test period ends from 20 days 5/2017 to 19 days 7/2017 for a total of 60 days, and the test results are shown in table 4:
TABLE 4
Index (I)
|
Adult fish specification
|
Daily gain
|
Coefficient of bait
|
Fullness of fertilizer
|
Survival rate
|
Example 2
|
110g±10g
|
1.75 g/day
|
1.63
|
2.6g/cm3 |
94%
|
Control feed 2
|
100g±15g
|
1.58 g/day
|
1.8
|
2.5g/cm3 |
82% |
The test result shows that: compared with the traditional floating expanded compound feed, the slow sinking siganus expanded compound feed has the advantages of high growth speed, regular specification, small individual weight difference, low feed coefficient, high fullness and survival rate and good growth performance.
Example 3:
a slow-sinking expanded compound feed for siganus guttatus is used for breeding siganus guttatus and comprises the following components in parts by weight: 34 parts of fish meal, 22 parts of flour, 1 part of seaweed gel, 24 parts of soybean meal, 1 part of corn protein powder, 5 parts of cassava starch, 1 part of wheat gluten, 4 parts of fish oil, 1 part of phospholipid oil, 2 parts of monocalcium phosphate, 0.2 part of choline chloride, 2 parts of seawater fish premix and 0.1 part of macleaya cordata. The feed is prepared by adopting an extrusion and puffing process. The finished product of the feed has the swelling degree of 1.3, the volume weight of 580g/L, the water content of 9.5 percent, the floating rate of less than 5 percent, the thickness of 1.2cm and the water-resistant time of more than or equal to 2 hours.
Every 1kg of the premix for the marine fish comprises the following components: 0.75g of vitamin A, 30.15g of vitamin D, 6.0g of vitamin E, K30.93g of vitamin B, 10.6g of vitamin B, 20.6 g of vitamin B, 60.6 g of vitamin B, 120.004g of vitamin B, 10.5g of vitamin C, 2.4g of D-calcium pantothenate, 4.5g of nicotinamide, 0.19g of folic acid, 0.01g of D-biotin, 4.5g of inositol, 14.49g of zinc sulfate monohydrate, 7.86g of manganese sulfate monohydrate, 2.4g of copper sulfate pentahydrate, 60g of ferrous sulfate monohydrate, 1.6g of cobalt chloride, 1.6g of calcium iodate, 0.4g of sodium selenite and 879.916g of carrier.
The preparation method of the compound feed comprises the following steps:
1) premixing: premixing the premix of the marine fish, macleaya cordata, seaweed glue and choline chloride to obtain a premixing agent;
2) primary crushing: crushing the soybean meal and the corn protein powder for the first time to obtain a crushed material; the fineness after primary crushing is as follows: 90% of the primary crushed material passes through a standard sieve with 60 meshes;
3) primary mixing: mixing fish meal, flour, wheat gluten, cassava starch and monocalcium phosphate with the primary crushed material in the step 2) for the first time to obtain a primary mixture; after mixing, the variation coefficient of the mixing uniformity is less than 7 percent;
4) superfine grinding: carrying out superfine grinding on the primary mixture in the step 3) to obtain superfine powder; the fineness after the superfine grinding is as follows: passing 95% of the superfine powder through a 80-mesh standard sieve;
5) and (3) secondary mixing: mixing the superfine crushed material in the step 4), the phospholipid oil and the premixing agent in the step 1) for the second time to obtain a secondary mixture; after mixing, the variation coefficient of the mixing uniformity is less than 7 percent;
6) tempering: tempering the secondary mixture obtained in the step 5) to obtain a tempered substance; in the quenching and tempering process, the steam pressure is 0.3Mpa, the quenching and tempering temperature is 105 ℃, the quenching and tempering time is 100s, and the water content after quenching and tempering is 28 wt%;
7) puffing and granulating: carrying out expansion granulation on the modified material in the step 6) to obtain an expanded material; in the expansion and granulation, the expansion temperature is 102 ℃, and the expansion coefficient is 1.3;
8) drying: drying the puffed material in the step 7); in the drying process, the drying temperature is 95 ℃, the drying time is 30min, and the moisture of the dried expanded material is 9 wt%;
9) oil spraying: spraying fish oil on the dried puffed material;
10) and (3) cooling: cooling the puffed material after the oil is sprayed to obtain the compound feed.
Example 4:
a slow-sinking expanded compound feed for siganus guttatus is used for breeding siganus guttatus and comprises the following components in parts by weight: 42 parts of fish meal, 18 parts of flour, 3 parts of seaweed gel, 20 parts of soybean meal, 3 parts of corn protein powder, 2 parts of cassava starch, 4 parts of vital gluten, 2 parts of fish oil, 2 parts of phospholipid oil, 1 part of monocalcium phosphate, 0.5 part of choline chloride, 1 part of seawater fish premix and 0.2 part of macleaya cordata. The feed is prepared by adopting an extrusion and puffing process. The finished product of the feed has the expansion degree of 1.1, the volume weight of 620g/L, the water content of 8 percent, the floating water rate of less than 5 percent, the thickness of 1.8cm and the water-resistant time of more than or equal to 2 hours.
Every 1kg of the premix for the marine fish comprises the following components: 0.75g of vitamin A, 30.15g of vitamin D, 6.0g of vitamin E, K30.93g of vitamin B, 10.6g of vitamin B, 20.6 g of vitamin B, 60.6 g of vitamin B, 120.004g of vitamin B, 10.5g of vitamin C, 2.4g of D-calcium pantothenate, 4.5g of nicotinamide, 0.19g of folic acid, 0.01g of D-biotin, 4.5g of inositol, 14.49g of zinc sulfate monohydrate, 7.86g of manganese sulfate monohydrate, 2.4g of copper sulfate pentahydrate, 60g of ferrous sulfate monohydrate, 1.6g of cobalt chloride, 1.6g of calcium iodate, 0.4g of sodium selenite and 879.916g of carrier.
The preparation method of the compound feed comprises the following steps:
1) premixing: premixing the premix of the marine fish, macleaya cordata, seaweed glue and choline chloride to obtain a premixing agent;
2) primary crushing: crushing the soybean meal and the corn protein powder for the first time to obtain a crushed material; the fineness after primary crushing is as follows: 90% of the primary crushed material passes through a standard sieve with 60 meshes;
3) primary mixing: mixing fish meal, flour, wheat gluten, cassava starch and monocalcium phosphate with the primary crushed material in the step 2) for the first time to obtain a primary mixture; after mixing, the variation coefficient of the mixing uniformity is less than 7 percent;
4) superfine grinding: carrying out superfine grinding on the primary mixture in the step 3) to obtain superfine powder; the fineness after the superfine grinding is as follows: passing 92% of the superfine powder through a 80-mesh standard sieve;
5) and (3) secondary mixing: mixing the superfine crushed material in the step 4), the phospholipid oil and the premixing agent in the step 1) for the second time to obtain a secondary mixture; after mixing, the variation coefficient of the mixing uniformity is less than 7 percent;
6) tempering: tempering the secondary mixture obtained in the step 5) to obtain a tempered substance; in the quenching and tempering process, the steam pressure is 0.4Mpa, the quenching and tempering temperature is 102 ℃, the quenching and tempering time is 140s, and the water content after quenching and tempering is 25 wt%;
7) puffing and granulating: carrying out expansion granulation on the modified material in the step 6) to obtain an expanded material; in the puffing and granulating process, the puffing temperature is 105 ℃, and the expansion coefficient is 1.1;
8) drying: drying the puffed material in the step 7); in the drying process, the drying temperature is 100 ℃, the drying time is 15min, and the moisture of the dried expanded material is 10 wt%;
9) oil spraying: spraying fish oil on the dried puffed material;
10) and (3) cooling: cooling the puffed material after the oil is sprayed to obtain the compound feed.
Example 5:
a slow-sinking expanded compound feed for siganus guttatus is used for breeding siganus guttatus and comprises the following components in parts by weight: 38 parts of fish meal, 20 parts of flour, 2 parts of seaweed gel, 22 parts of soybean meal, 2 parts of corn protein powder, 3 parts of cassava starch, 3 parts of wheat gluten, 3 parts of fish oil, 1.5 parts of phospholipid oil, 1.5 parts of monocalcium phosphate, 0.4 part of choline chloride, 1.5 parts of seawater fish premix and 0.15 part of macleaya cordata. The feed is prepared by adopting an extrusion and puffing process. The finished product of the feed has the expansion degree of 1.2, the volume weight of 600g/L, the water content of 9 percent, the floating rate of less than 5 percent, the thickness of 1.5cm and the water-resistant time of more than or equal to 2 hours.
Every 1kg of the premix for the marine fish comprises the following components: 0.75g of vitamin A, 30.15g of vitamin D, 6.0g of vitamin E, K30.93g of vitamin B, 10.6g of vitamin B, 20.6 g of vitamin B, 60.6 g of vitamin B, 120.004g of vitamin B, 10.5g of vitamin C, 2.4g of D-calcium pantothenate, 4.5g of nicotinamide, 0.19g of folic acid, 0.01g of D-biotin, 4.5g of inositol, 14.49g of zinc sulfate monohydrate, 7.86g of manganese sulfate monohydrate, 2.4g of copper sulfate pentahydrate, 60g of ferrous sulfate monohydrate, 1.6g of cobalt chloride, 1.6g of calcium iodate, 0.4g of sodium selenite and 879.916g of carrier.
The preparation method of the compound feed comprises the following steps:
1) premixing: premixing the premix of the marine fish, macleaya cordata, seaweed glue and choline chloride to obtain a premixing agent;
2) primary crushing: crushing the soybean meal and the corn protein powder for the first time to obtain a crushed material; the fineness after primary crushing is as follows: 90% of the primary crushed material passes through a standard sieve with 60 meshes;
3) primary mixing: mixing fish meal, flour, wheat gluten, cassava starch and monocalcium phosphate with the primary crushed material in the step 2) for the first time to obtain a primary mixture; after mixing, the variation coefficient of the mixing uniformity is less than 7 percent;
4) superfine grinding: carrying out superfine grinding on the primary mixture in the step 3) to obtain superfine powder; the fineness after the superfine grinding is as follows: passing 94% of the superfine crushed material through a standard sieve of 80 meshes;
5) and (3) secondary mixing: mixing the superfine crushed material in the step 4), the phospholipid oil and the premixing agent in the step 1) for the second time to obtain a secondary mixture; after mixing, the variation coefficient of the mixing uniformity is less than 7 percent;
6) tempering: tempering the secondary mixture obtained in the step 5) to obtain a tempered substance; in the quenching and tempering process, the steam pressure is 0.35Mpa, the quenching and tempering temperature is 103 ℃, the quenching and tempering time is 120s, and the water content after quenching and tempering is 27 wt%;
7) puffing and granulating: carrying out expansion granulation on the modified material in the step 6) to obtain an expanded material; in the expansion granulation, the expansion temperature is 104 ℃, and the expansion coefficient is 1.2;
8) drying: drying the puffed material in the step 7); in the drying process, the drying temperature is 97 ℃, the drying time is 22min, and the moisture of the dried expanded material is 9.5 wt%;
9) oil spraying: spraying fish oil on the dried puffed material;
10) and (3) cooling: cooling the puffed material after the oil is sprayed to obtain the compound feed.
Example 6:
a slow-sinking expanded compound feed for siganus guttatus is used for breeding siganus guttatus and comprises the following components in parts by weight: 38 parts of fish meal, 20 parts of flour, 2 parts of seaweed gel, 22 parts of bean pulp, 2 parts of corn protein powder, 3 parts of cassava starch, 3 parts of wheat gluten, 3 parts of fish oil, 1.5 parts of phospholipid oil, 1.5 parts of monocalcium phosphate, 0.4 part of choline chloride, 1.5 parts of marine fish premix, 0.15 part of macleaya cordata, 0.2 part of mildew preventive, 0.03 part of antioxidant, 1 part of lysine and 0.5 part of methionine. The mildew inhibitor is propionic acid, and the antioxidant is ethoxyquinoline.
Example 7:
a slow-sinking expanded compound feed for siganus guttatus is used for breeding siganus guttatus and comprises the following components in parts by weight: 38 parts of fish meal, 20 parts of flour, 2 parts of seaweed gel, 22 parts of bean pulp, 2 parts of corn protein powder, 3 parts of cassava starch, 3 parts of wheat gluten, 3 parts of fish oil, 1.5 parts of phospholipid oil, 1.5 parts of monocalcium phosphate, 0.4 part of choline chloride, 1.5 parts of marine fish premix, 0.15 part of macleaya cordata, 0.3 part of lysine and 0.2 part of methionine.
Example 8:
a slow-sinking expanded compound feed for siganus guttatus is used for breeding siganus guttatus and comprises the following components in parts by weight: 38 parts of fish meal, 20 parts of flour, 2 parts of seaweed gel, 22 parts of bean pulp, 2 parts of corn protein powder, 3 parts of cassava starch, 3 parts of wheat gluten, 3 parts of fish oil, 1.5 parts of phospholipid oil, 1.5 parts of monocalcium phosphate, 0.4 part of choline chloride, 1.5 parts of marine fish premix, 0.15 part of macleaya cordata, 0.1 part of mildew preventive and 0.01 part of antioxidant. The mildew inhibitor is propionic acid, and the antioxidant is ethoxyquinoline.
Example 9:
a slow-sinking expanded compound feed for siganus guttatus is used for breeding siganus guttatus and comprises the following components in parts by weight: 38 parts of fish meal, 20 parts of flour, 2 parts of seaweed gel, 22 parts of bean pulp, 2 parts of corn protein powder, 3 parts of cassava starch, 3 parts of wheat gluten, 3 parts of fish oil, 1.5 parts of phospholipid oil, 1.5 parts of monocalcium phosphate, 0.4 part of choline chloride, 1.5 parts of marine fish premix, 0.15 part of macleaya cordata, 0.15 part of mildew preventive, 0.02 part of antioxidant, 0.7 part of lysine and 0.4 part of methionine. The mildew inhibitor is propionic acid, and the antioxidant is ethoxyquinoline.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.