CN103109767A - Loach fish fry artificial cultivation method - Google Patents
Loach fish fry artificial cultivation method Download PDFInfo
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- CN103109767A CN103109767A CN2013100733440A CN201310073344A CN103109767A CN 103109767 A CN103109767 A CN 103109767A CN 2013100733440 A CN2013100733440 A CN 2013100733440A CN 201310073344 A CN201310073344 A CN 201310073344A CN 103109767 A CN103109767 A CN 103109767A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
A loach fish fry artificial cultivation method is characterized by comprising spawning and hatching process, 7-day (d) fish fries cultivation and 15 d fish fries cultivation, wherein the spawning and hatching process comprises the following steps: parent fish rearing and selecting; artificial induction; fertilization process; and fertilized egg hatching process. A loach fish fry reinforced cultivation method comprises the following steps: adopting indoor flat surface slot to cultivate the 7 d fish fries and the 15 d fish fries, reinforced culturing fish fries, stocking loach fish fries to a pond after the 7 d fish loach fish fries and the 15 d fish fries grow up, and thereby greatly improving fish fry indoor cultivating survival rate and fish dries pond descending survival rate. A result of an experimental research shows that: the indoor cultivating survival rate of the 7 d fish fries reaches up to 87.8 percents, the pond descending survival rate reaches up to more than 30 percents, the 15 d fish fries reaches up to 92.6 percents, and the pond descending survival rate reaches up to more than 50 percents. The loach fish fry artificial cultivation method is scientific and rational, easy to implement, and good in practicability. By using loach fish fry artificial cultivation method, the fish dries pond descending survival rate can be greatly improved, and good economic benefit can be obtained.
Description
Technical field
The present invention relates to the freshwater fish fingerlings artificial culturing method, particularly a kind of loach fish the Miaos work breeding method.
Background technology
Loach (Misgurnus anguilicaudatus) was wild species originally, belonged to Cypriniformes, Cobitidae, loach genus.Because of its delicious flavour, fine and tender taste, nutritious, be described as " ginseng in water ".At present; the required seed of China's loach breeding be mainly the wild[l of manually fishing for be main; the pollutions such as chemical fertilizer, agricultural chemicals and three industrial wastes because modern agriculture uses cause the loach wild resource to fall sharply, and wild seed resource can not satisfy the needs of large-scale cultivation.
The loach artificial breeding had been reported from the beginning of the eighties in last century, and still, rearing of fingerling does not pass a test.Prelarva indoor culture 5d-7d, weed survival rate is less than 55%; Spray seedling (3-4d age) is directly thrown in pond culture, and weed survival rate is less than 20%.Loach weed survival rate problem hinders the development of loach industry always.
Summary of the invention
For current loach prelarva indoor culture 5d-7d; weed survival rate is less than 55%; the production status of pool survival rate less than 20% under loach spray seedling; the invention provides a kind of loach fish the Miaos work breeding method; its purpose is: by planar slot and circular groove to loach seedling reinforced cultivating; thereby increase substantially seed indoor culture survival rate and lower pool survival rate, for the large-scale cultivation of loach provides technical support.
Technical solution of the present invention:
A kind of loach fish the Miaos work breeding method is characterized in that, comprises the steps
(1) produce the process of incubating.
1. parent fish rearing with select: produce and to incubate front 30-40 days, select 3 age parent population, and divide the pond reinforced cultivating with female milter.
2. artificial induced spawning: when 24 ℃-26 ℃ of the water temperatures, the ratio take female-male proportion as 1:1.3-1.5 is selected parent population and is used ocyodinic to carry out artificial induced spawning to parent population from storage pond, holding pond with the parent population that cultivates.
3. fertilization process: the parent population after hastening parturition is put into the net cage of laying eggs of indoor cement pit, and with the oxygenation of water pump circulation flowing water, stimulates Gunther parent fish spawning.
4. incubating oosperm: with the fertilized egg of output through collect rinse after, put in the hatching pail that is placed in the plane incubation tank and hatch; Simultaneously, suspention hatching net sheet in another plane incubation tank when in hatching pail during 15% fry membrane, is poured on fish embryo in hatching pail in another plane incubation tank and continues hatching on hatching net sheet.
Described planar slot is rectangular-shaped, and the wide x of long x is high: 2.5 mx0.45 mx0.3 m;
(2) 7d prelarva in age is cultivated.
Prelarva hatching 3d will be hatched the net sheet and be withdrawn from the incubation tank of plane.
Prelarva hatching 4d carries out feeding yolk to prelarva.
Prelarva hatching 5d-7d carries out the feeding shrimp med to prelarva.
Described feeding number of times is: day bait throwing in 6 times, the 5-8% of daily ration, feeding quantity percentage of liveweight.
Described plane incubation tank is removed contamination 1 time every day, changes water 1 time;
(3) 15d prelarva in age is cultivated.
7d prelarva in age is moved in circular groove in the incubation tank of plane in each plane incubation tank cultivation 9-10 ten thousand tail ratios, and by air pump oxygenation in the circular groove.
Prelarva hatching 8d-15d carries out the feeding prawn slice to prelarva, day bait throwing in 6 times, and daily ration, feeding quantity accounts for the 5-8% of fry body weight.
Circular groove is removed contamination 1 time every day, changes water 1 time.
Described circular groove diameter is that 2 m, height are 0.5 m, the depth of water 0.4 m.
Described circular groove inside is provided with the oxygenation facility.
Described oxygenation facility is gas stone.
After described 7d prelarva in age is cultivated and completes, before putting into the fish pond, hang chalina with every mu of 2-3 row below fish pond, after 7d prelarva in age is thrown in around chalina.
Described 15d prelarva in age can directly be thrown in the fish pond, strengthens the pond management during loach breeding, does the pond knot at the beginning of 11 months and produces, and measures weed survival rate more than 30%.
Beneficial effect of the present invention:
Loach seedling reinforced cultivating mode adopts indoor planar slot to cultivate 7d prelarva in age and circular groove is cultivated 15d prelarva in age, by to spray seedling reinforced cultivating, put again the pond after age in a suitable place to breed until loach seedling 7d age, 15d, increased substantially pool survival rate under seed indoor culture survival rate and prelarva.Result of study shows: the indoor survival rate of 7d prelarva in age reaches 87.8%, and behind the lower pool, survival rate reaches more than 30%; The indoor survival rate of 15d prelarva in age reaches 92.6%, and behind the lower pool, weed survival rate reaches more than 50%.
These technological sciences are reasonable, and are easy to implement, and practicality is good, utilize this technology can greatly improve pool survival rate under the loach seedling, obtain good economic benefit.
Embodiment
Below in conjunction with specific embodiment, the present invention is further elaborated:
Embodiment one:
(1) produce the process of incubating.
1. parent fish rearing with select.Product was incubated front 30 days, select 3 age parent population, and divide the pond reinforced cultivating with female milter, the throw something and feed loach manufactured feed (production of great river, Huaian aquatic feeds Co., Ltd) of protein content 33.5%, a day feeding volume is 5% of parent population body weight, milter will have obvious nuptial coloration, body colour is bright-coloured, more than body weight 20g.Ripe raun wants belly full, soft, and the gonopore mastoid process is given prominence to greatly, and hole circle presents blush, more than body weight 30g.
2. artificial induced spawning.When 24 ℃ of water temperatures, select parent population (female-male proportion is 1:1.3) and hasten parturition from storage pond, holding pond.Injectable drug is the short Luteinizing hormone releasing hormone analog (LRH-A that Ningbo bio-pharmaceuticals three factories produce
2), maleic acid DOM (DOM) and human chorionic gonadtropin (HCG), three's hybrid injection.Injected dose is: LRH-A
22-4 μ g/KG, DOM 2mg/KG, HCG400-800UI/KG.The injection of employing muscle of back, the milter injected dose reduces by half.
3. fertilization process.Parent population after having an injection is put into the net cage natural spawning of laying eggs, and the case of laying eggs is placed in indoor cement pit, with water pump circulation stimulation by running water Gunther parent fish spawning and oxygenation.
4. incubating oosperm.Fertilized egg is put into hatching pail (diameter 15cm, high 40 cm) after clear water rinses.Hatching pail is placed in the plane incubation tank of filling clear water, the inflation of groove surrounding venting stone trace, and the depth of water remains on 0.25 m, and fertilized egg is hatched at hatching pail miniflow water.Standby what a planar slot in advance, suspention and keep flat 60 order net sheets (net pitch of fins bottom land 8cm) in groove.When 15% fry membrane is arranged in hatching pail, fish embryo in bucket is poured on continues hatching on the planar slot net sheet of getting ready;
(2) 7d prelarva in age is cultivated.
Prelarva hatching 3d withdraws from the net sheet.4d begins to feed yolk, and the 5d-7d feeds shrimp med.Day bait throwing in 6 times, daily ration, feeding quantity accounts for 5% of fry body weight.Remove contamination every day 1 time, change water 1 time.During to 7d, sampling 50 tail loach seedlings are measured approximately 5.2mm of 7d prelarva in age total length, survival rate of fish fry 87.8%.
Under 7d prelarva in age during the pool, first hang a few row's chalinas (every mu 2 row) below the water body of the rich water pool, fry is thrown in around chalina, breeding density is 200,000 tail/mus, strengthens the pond and manages.When going out the pond at the beginning of 11 months, per mu yield 389 kg, sampling 50 tails are surveyed growth indexes: total length 4.1-7.0 cm, body weight 5.0-7.8 g, weed survival rate can reach 30% at least;
(3) 15d prelarva in age is cultivated.
7d prelarva in age is moved on to circular groove to be cultivated.It is 100,000 tails that each circular groove is thrown in density.The air pump oxygenation, the prawn slice of throwing something and feeding every day 6 times, daily ration of feeding accounts for 8 % of fry body weight.Remove contamination every day 1 time, change water 1 time.During 15d, sampling 50 tail loach seedlings, measuring 15d prelarva in age total length is 9.0mm-9.5mm, weed survival rate is 92.6%.
During the pool, throw in 130,000 tails for every mu under 15d prelarva in age, fry full pond is evenly thrown in, strengthen the pond management.When going out the pond at the beginning of 11 months, per mu yield 371kg, sampling check 50 tails are surveyed growth indexes: total length 3.9-7.0 cm, body weight 4.3-7.2 g, weed survival rate can reach 50% at least.
The indoor culture prelarva, 7d age and 15d prelarva in age total length are respectively 5.2-6.5mm and 8.8-9.5mm, and the larvae survival rate is 87.8 % and 92.6 % respectively, compare with conventional cultivating survival rate less than 55%, improve respectively 32.8% and 37.6%; Behind the lower pool, weed survival rate is respectively 30% and 50%, directly descends pool weed survival rate to compare less than 20% with 3-4d prelarva in age, more than weed survival rate improves respectively 10% and 30 %.
Embodiment two:
(1) produce the process of incubating.
1. parent fish rearing with select.Product was incubated front 40 days, select 3 age parent population, and divide the pond reinforced cultivating with female milter, the throw something and feed loach manufactured feed (production of great river, Huaian aquatic feeds Co., Ltd) of protein content 33.5%, a day feeding volume is 8% of parent population body weight, milter will have obvious nuptial coloration, body colour is bright-coloured, more than body weight 20g.Ripe raun wants belly full, soft, and the gonopore mastoid process is given prominence to greatly, and hole circle presents blush, more than body weight 30g.
2. artificial induced spawning.When 26 ℃ of water temperatures, select parent population (female-male proportion is 1:1.5) and hasten parturition from storage pond, holding pond.Injectable drug is the short Luteinizing hormone releasing hormone analog (LRH-A that Ningbo bio-pharmaceuticals three factories produce
2), maleic acid DOM (DOM) and human chorionic gonadtropin (HCG), three's hybrid injection.Injected dose is: LRH-A
22-4 μ g/KG, DOM 2mg/KG, HCG400-800UI/KG.The injection of employing muscle of back, the milter injected dose reduces by half.
3. fertilization process.Parent population after having an injection is put into the net cage natural spawning of laying eggs, and the case of laying eggs is placed in indoor cement pit, with water pump circulation stimulation by running water Gunther parent fish spawning and oxygenation.
4. incubating oosperm.Fertilized egg is put into hatching pail (diameter 15cm, high 40 cm) after clear water rinses.Hatching pail is placed in the plane incubation tank of filling clear water, the inflation of groove surrounding venting stone trace, and the depth of water remains on 0.25 m, and fertilized egg is hatched at hatching pail miniflow water.Standby what a planar slot in advance, suspention and keep flat 60 order net sheets (net pitch of fins bottom land 8-10cm) in groove.When 15% fry membrane is arranged in hatching pail, fish embryo in bucket is poured on continues hatching on the planar slot net sheet of getting ready;
(2) 7d prelarva in age is cultivated.
Prelarva hatching 3d withdraws from the net sheet.4d begins to feed yolk, and the 5d-7d feeds shrimp med.Day bait throwing in 6 times, daily ration, feeding quantity accounts for 8% of fry body weight.Remove contamination every day 1 time, change water 1 time.During to 7d, sampling 50 tail loach seedlings are measured 7d prelarva in age total length 5.2mm-6.5mm, and survival rate of fish fry can reach 90% at least.
Under 7d prelarva in age during the pool, first hang a few row's chalinas (every mu 2 row) below the water body of the rich water pool, fry is thrown in around chalina, breeding density is 200,000 tail/mus, strengthens the pond and manages.When going out the pond at the beginning of 11 months, per mu yield 389 kg, sampling 50 tails are surveyed growth indexes: total length 4.1-7.5 cm, body weight 4.9-7.8 g, weed survival rate approximately 32%;
(3) 15d prelarva in age is cultivated.
7d prelarva in age is moved on to circular groove to be cultivated.It is 100,000 tails that each circular groove is thrown in density.The air pump oxygenation, the prawn slice of throwing something and feeding every day 6 times, daily ration of feeding accounts for the 5-8 % of fry body weight.Remove contamination every day 1 time, change water 1 time.During 15d, sampling 50 tail loach seedlings, measuring 15d prelarva in age total length is 8.8mm-9.5mm, weed survival rate is 93.8%.
During the pool, throw in 130,000 tails for every mu under 15d prelarva in age, fry full pond is evenly thrown in, strengthen the pond management.When going out the pond at the beginning of 11 months, per mu yield 371kg, sampling check 50 tails are surveyed growth indexes: total length 3.9-7.0 cm, body weight 4.3-7.2 g, weed survival rate approximately 52.8%.
The indoor culture prelarva, 7d age and 15d prelarva in age total length are respectively 5.2-6.5mm and 8.8-9.5mm, and the larvae survival rate is 90 % and 93.8 % respectively, compare with conventional cultivating survival rate less than 55%, improve respectively 35% and 38.8%; Behind the lower pool, weed survival rate is respectively 30% and 50%, directly descends pool weed survival rate to compare less than 20% with 3-4d prelarva in age, more than weed survival rate improves respectively 10% and 30 %.
Claims (7)
1. loach fish the Miaos work breeding method, is characterized in that, comprises the steps:
(1) produce the process of incubating:
1. parent fish rearing with select: produce and to incubate front 30-40 days, select 3 age parent population, and divide the pond reinforced cultivating with female milter;
2. artificial induced spawning: when 24 ℃-26 ℃ of the water temperatures, the ratio take female-male proportion as 1:1.3-1.5 is selected parent population and is used ocyodinic to carry out artificial induced spawning to parent population from storage pond, holding pond with the parent population that cultivates;
3. fertilization process: the parent population after hastening parturition is put into the net cage of laying eggs of indoor cement pit, and with the oxygenation of water pump circulation flowing water, stimulates Gunther parent fish spawning;
4. incubating oosperm: with the fertilized egg of output through collect rinse after, put in the hatching pail that is placed in the plane incubation tank and hatch; Simultaneously, suspention hatching net sheet in another plane incubation tank when in hatching pail during 15% fry membrane, is poured on fish embryo in hatching pail in another plane incubation tank and continues hatching on hatching net sheet;
(2) 7d prelarva in age is cultivated:
Prelarva hatching 3d will be hatched the net sheet and be withdrawn from the incubation tank of plane;
Prelarva hatching 4d carries out feeding yolk to prelarva;
Prelarva hatching 5d-7d carries out the feeding shrimp med to prelarva;
The feeding number of times is: day bait throwing in 6 times, the 5-8% of daily ration, feeding quantity percentage of liveweight;
The plane incubation tank is removed contamination 1 time every day, changes water 1 time;
(3) 15d prelarva in age is cultivated:
7d prelarva in age is moved in circular groove in the incubation tank of plane in each plane incubation tank cultivation 9-10 ten thousand tail ratios, and by air pump oxygenation in the circular groove;
Prelarva hatching 8d-15d carries out the feeding prawn slice to prelarva, day bait throwing in 6 times, and daily ration, feeding quantity accounts for the 5-8% of fry body weight;
Circular groove is removed contamination 1 time every day, changes water 1 time.
2. a kind of loach fish the Miaos work breeding method as claimed in claim 1, it is characterized in that: the planar slot described in step (1) or step (2) is rectangular-shaped, and the wide x of long x is high: 2.5 mx0.45 mx0.3 m.
3. a kind of loach fish the Miaos work breeding method as claimed in claim 1, it is characterized in that: the circular groove diameter described in step (3) is that 2 m, height are 0.5 m, the depth of water 0.4 m.
4. a kind of loach fish the Miaos work breeding method as claimed in claim 1 is characterized in that: the circular groove inside described in step (3) is provided with the oxygenation facility.
5. a kind of loach fish the Miaos work breeding method as claimed in claim 4, it is characterized in that: described oxygenation facility is gas stone.
6. a kind of loach fish the Miaos work breeding method as claimed in claim 1, it is characterized in that: after the 7d prelarva in age described in step (2) is cultivated and completes, before putting into the fish pond, hang chalina with every mu of 2-3 row below fish pond, after 7d prelarva in age is thrown in around chalina.
7. a kind of loach fish the Miaos work breeding method as claimed in claim 1, it is characterized in that: the 15d prelarva in age described in step (3) can directly be thrown in the fish pond.
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| CN103609498A (en) * | 2013-12-02 | 2014-03-05 | 毕伸 | Loach larva cultivating method |
| CN103704158A (en) * | 2013-12-03 | 2014-04-09 | 桐乡市恒盛泥鳅养殖专业合作社 | Method for farming loaches on large scale |
| CN103719004A (en) * | 2013-12-30 | 2014-04-16 | 黄梅县志清泥鳅繁育养殖专业合作社 | Efficient pond breeding method for loach large-size offspring fry |
| CN103828750A (en) * | 2014-03-20 | 2014-06-04 | 淮阴师范学院 | Loach fry cultivation method |
| CN103960184A (en) * | 2014-04-30 | 2014-08-06 | 金华市苏香现代农业科技有限公司 | Breeding method for increasing survival rate of loaches manually bred in factory-like mode |
| CN104041436A (en) * | 2014-05-29 | 2014-09-17 | 郎溪县兴贵水产品养殖家庭农场 | Stocking method for loach fry artificial breeding |
| CN104082213A (en) * | 2014-07-15 | 2014-10-08 | 佛山市敦皇水产养殖有限公司 | Artificial propagation method for Taiwan mud fishes |
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| CN103609498A (en) * | 2013-12-02 | 2014-03-05 | 毕伸 | Loach larva cultivating method |
| CN103609498B (en) * | 2013-12-02 | 2015-07-08 | 毕伸 | Loach larva cultivating method |
| CN103704158A (en) * | 2013-12-03 | 2014-04-09 | 桐乡市恒盛泥鳅养殖专业合作社 | Method for farming loaches on large scale |
| CN103719004A (en) * | 2013-12-30 | 2014-04-16 | 黄梅县志清泥鳅繁育养殖专业合作社 | Efficient pond breeding method for loach large-size offspring fry |
| CN103719004B (en) * | 2013-12-30 | 2015-10-28 | 黄梅县志清泥鳅繁育养殖专业合作社 | A kind of efficient pond rearing method of loach large size seedling seed |
| CN103828750B (en) * | 2014-03-20 | 2015-09-23 | 淮阴师范学院 | The breeding method of loach prelarva |
| CN103828750A (en) * | 2014-03-20 | 2014-06-04 | 淮阴师范学院 | Loach fry cultivation method |
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