CN104542398A - Spring and autumn two-season propagation method for loaches - Google Patents
Spring and autumn two-season propagation method for loaches Download PDFInfo
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- CN104542398A CN104542398A CN201510000661.9A CN201510000661A CN104542398A CN 104542398 A CN104542398 A CN 104542398A CN 201510000661 A CN201510000661 A CN 201510000661A CN 104542398 A CN104542398 A CN 104542398A
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- 241000252185 Cobitidae Species 0.000 title claims abstract description 208
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009395 breeding Methods 0.000 claims abstract description 44
- 230000001488 breeding effect Effects 0.000 claims abstract description 44
- 238000011534 incubation Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 101
- 230000003203 everyday effect Effects 0.000 claims description 30
- 235000013305 food Nutrition 0.000 claims description 25
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 20
- 244000068988 Glycine max Species 0.000 claims description 15
- 235000010469 Glycine max Nutrition 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 238000006213 oxygenation reaction Methods 0.000 claims description 15
- 239000006041 probiotic Substances 0.000 claims description 15
- 235000018291 probiotics Nutrition 0.000 claims description 15
- 241000894006 Bacteria Species 0.000 claims description 10
- 102000002322 Egg Proteins Human genes 0.000 claims description 10
- 108010000912 Egg Proteins Proteins 0.000 claims description 10
- 239000000292 calcium oxide Substances 0.000 claims description 10
- 235000012255 calcium oxide Nutrition 0.000 claims description 10
- 235000013601 eggs Nutrition 0.000 claims description 10
- 230000012447 hatching Effects 0.000 claims description 10
- 239000008267 milk Substances 0.000 claims description 10
- 235000013336 milk Nutrition 0.000 claims description 10
- 210000004080 milk Anatomy 0.000 claims description 10
- 210000004681 ovum Anatomy 0.000 claims description 10
- 230000000243 photosynthetic effect Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 240000007594 Oryza sativa Species 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 241000272525 Anas platyrhynchos Species 0.000 claims description 5
- 241000238557 Decapoda Species 0.000 claims description 5
- 241000252186 Misgurnus fossilis Species 0.000 claims description 5
- 241000223785 Paramecium Species 0.000 claims description 5
- 241001482311 Trionychidae Species 0.000 claims description 5
- 210000002969 egg yolk Anatomy 0.000 claims description 5
- 239000003337 fertilizer Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 239000003895 organic fertilizer Substances 0.000 claims description 5
- 230000032696 parturition Effects 0.000 claims description 5
- 239000010458 rotten stone Substances 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 235000015099 wheat brans Nutrition 0.000 claims description 5
- 230000004083 survival effect Effects 0.000 abstract description 3
- 230000000384 rearing effect Effects 0.000 abstract 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000000644 propagated effect Effects 0.000 abstract 1
- 230000018109 developmental process Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000004213 low-fat Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 235000008935 nutritious Nutrition 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
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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
The invention discloses a spring and autumn two-season propagation method for loaches. The method comprises the steps of (1) spring breeding pond preparation; (2) spring parent loach selection; (3) spring parent loach pretreatment; (4) spring spawning incubation; (5) spring temporary rearing; (6) spring nursery pond cultivation enhancing; (7) spring fry releasing into the pond; (8) autumn parent loach selection; (9) autumn parent loach pretreatment; (10) autumn spawning incubation; (11) autumn temporary rearing. The method has the advantages that the loach spring and autumn artificial propagation technology is broken through, 40,000,000 of loach pries are propagated each year, the loach fingerling survival rate reaches 40%, and more than 5 million of high-quality loach fingerlings of the average specification of 1g are cultivated each year.
Description
Technical field
Invention relates to technical field of aquaculture, is specifically related to loach propagation method of two season in spring and autumn.
Background technology
Loach is containing high protein and low fat, and Fresh & Tender in Texture, nutritious, delicious flavour, is rich in multivitamin and mineral matter, has very high nutritive value and medical value.These years due to overfishing, particularly the spreading unchecked of electric fishing loach, adds in farmland the change of using agricultural chemicals and the cropping system be harmful to loach in a large number, and the loach resource in natural water area and paddy field falls sharply year by year, propagates loach artificially and occurs thereupon.The artificial propagation techniques of loach is updated by domestic and international Duo Jia aquatic products R&D institution and waterman author, current topmost method adopts little loach nursery pond to concentrate to raise, after loach seedling grows to 3cm, drop into into loach pond to raise, but the loach seedling that the method is cultivated, when growing into a cun sheet (3cm is long), survival rate only has 5%-10%, and loach water flower seedling is directly thrown in pond culture, domestic top level also only can reach 20%, this seriously constrains the development of China's loach breeding industry, and loach can only breed in spring, in the fall can not natural propagation, limit the large-scale development of loach breeding.
Summary of the invention
The technical problem to be solved in the present invention is that existing loach propagation method can only be carried out in spring, and year cultivation amount is limited, provides a kind of loach cultural method of two season in spring and autumn for this reason.
Technical scheme of the present invention is: loach two season cultural method, comprise the steps:
(1) breed the preparation in pond spring: spring with tripoli build one have water inlet and a discharge outlet breed pond, breed in pond with the plastic sack of filling earth be separated out some long 4-6 rice, wide 1.5-2.5 rice, dark 0.6-0.8 rice son breed pond, the close net first spread mesh diameter at the bottom of the pond in pond and be less than loach seed is bred at son, about 90 order specifications, then rare net of loach seed is greater than at close online laying mesh diameter, about 13 order specifications, the edge of close net and rare net all will extend to the edge of breeding pond; And a circulation water inlet pipe is prepared in water inlet, the flow-control of water inlet pipe is at 0.2L/s;
(2) spring parent loach seed selection: select the female loach just before giving birth and the male loach of fresh aquatic food, both quantitative proportions are: female loach: male loach=1:1.2-1.5;
(3) spring parent loach pretreatment: drain Chi Shui, by 1 mu with quicklime 40 kilograms, by full pool spilling head stir bed mud in time while hot after molten for quicklime water; Within one day, inject 10 ~ 18 centimetres, the water filtered through 20 ~ 35 object screen windows in backward pond, in pond, apply biological organic fertilizer 110 ~ 140 kilograms by 1 mu simultaneously; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 400 ~ 450 grams, described photosynthetic bacteria concentration is viable count 2 × 108cfu/g;
(4) spring spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 6-8 kilogram, and the depth of water of breeding pond is 30-35cm, and water temperature is 22-24 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 80% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close, is eaten up by male parent with the fish-egg prevented; 3 days rear demouldings, can emerge for 4-5 days, and the parent loach having produced ovum shifts in time;
(5) support temporarily spring: want in time the yolk water boiled and shrimp med open-mouthed bait evenly to be splashed breeding in pond after loach seedling incubation of membrane; Splash every day with probiotics, keep breeding water body to have fertilizer, work, refreshing characteristic; Loach seedling is normally taken food, after long 1.5 ~ 2 centimetres of body, allow loach seedling leave freely and breed pond;
(6) nursery pond hot housing in spring: breed pond temporarily support after fine day in, cultivate in nursery pond loach seedling being transferred to 280 square metres, be cultured to the very little tail that spray grows up to about 2 centimeters long, generally take 15-20 days, wherein the requirement of nursery pond is non sludge at the bottom of pond, and the water filling degree of depth is at 60-70cm;
(7) under spring, seedling is put on the pool: execute the duck excrement 20kg that ferments for every square metre, when water body food organisms are agreeable to the taste, by grow up to about 4 centimeters long very little tail loach seedling under the large pool, start to throw something and feed soya-bean milk 3 times first week every day, consumption is the soya-bean milk that every 10 tail loach seedlings hello 1kg soya bean is worn into, wheat bran of throwing something and feeding from second week, and every day throws something and feeds 5-7 time, principle is on a small quantity repeatedly, when taking to throw something and feed at regular time and quantity after the whole opening of loach;
(8), autumn parent loach seed selection: the male loach selecting female loach and fresh aquatic food, both quantitative proportions are: female loach: male loach=1:3-5;
(9), autumn parent loach pretreatment: in pond, apply human chorionic gonadtropin 5.1 ~ 7.2 kilograms by 1 mu, temperature controls at 26-30 DEG C; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 410 ~ 440 grams, described photosynthetic bacteria concentration is viable count 3 × 108cfu/g;
(10), autumn spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 6-8 kilogram, and the depth of water of breeding pond is 30-35cm, and water temperature is 22-24 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 70% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close, and 3 days rear demouldings, can emerge for 4-5 days, and the parent loach having produced ovum shifts in time;
(11), support temporarily autumn: the spray hatched continues breeding foster 5-7 days in pond, during supporting temporarily, water temperature controls at 20-25 DEG C, and will running water oxygenation always, when after loach seedling demoulding, within 24 hours, should to throw something and feed in time loach seedling opening material, its opening material is paramecium or young soft-shelled turtle material or Feng Lian worm, and its feeding volume is ten thousand tail 20g, and every day normally takes food until loach seedling for 2 times, can leave after long 1.5 ~ 2 centimetres of body and breed pond.
The invention has the beneficial effects as follows breach the loach spring, autumn artificial propagation techniques, realize year breeding mud fish fry 4,000 ten thousand tail, loach kind cultivating survival rate reaches the technical merit of 40%; Year cultivates more than high-quality loach kind 5,000,000 tail of average size 1g.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1:(1) breed the preparation in pond spring: spring with tripoli build one have water inlet and a discharge outlet breed pond, breed in pond with the plastic sack of filling earth be separated out some length 4 meters, wide 1.5 meters, dark 0.6 meter son breeds pond, the close net first spread mesh diameter at the bottom of the pond in pond and be less than loach seed is bred at son, about 90 order specifications, then rare net of loach seed is greater than at close online laying mesh diameter, about 13 order specifications, the edge of close net and rare net all will extend to the edge of breeding pond; And a circulation water inlet pipe is prepared in water inlet, the flow control of water inlet pipe is at 0.2L/s;
(2) spring parent loach seed selection: select the female loach just before giving birth and the male loach of fresh aquatic food, both quantitative proportions are: female loach: male loach=1:1.2;
(3) spring parent loach pretreatment: drain Chi Shui, by 1 mu with quicklime 40 kilograms, by full pool spilling head stir bed mud in time while hot after molten for quicklime water; Within one day, inject 10 centimetres, the water filtered through 20 object screen windows in backward pond, in pond, apply biological organic fertilizer 110 kilograms by 1 mu simultaneously; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 400 grams, described photosynthetic bacteria concentration is viable count 2 × 108cfu/g;
(4) spring spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 6 kilograms, and the depth of water of breeding pond is 30cm, and water temperature is 22 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 80% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close, is eaten up by male parent with the fish-egg prevented; 3 days rear demouldings, can emerge for 4 days, and the parent loach having produced ovum shifts in time;
(5) support temporarily spring: want in time the yolk water boiled and shrimp med open-mouthed bait evenly to be splashed breeding in pond after loach seedling incubation of membrane; Splash every day with probiotics, keep breeding water body to have fertilizer, work, refreshing characteristic; Loach seedling is normally taken food, after long 1.5 centimetres of body, allow loach seedling leave freely and breed pond;
(6) nursery pond hot housing in spring: breed pond temporarily support after fine day in, cultivate in nursery pond loach seedling being transferred to 280 square metres, be cultured to the very little tail that spray grows up to about 2 centimeters long, generally take 15 days, wherein the requirement of nursery pond is non sludge at the bottom of pond, and the water filling degree of depth is at 60cm;
(7) under spring, seedling is put on the pool: execute duck excrement 20kg for every square metre, when water body food organisms are agreeable to the taste, by grow up to about 4 centimeters long very little tail loach seedling under the large pool, start to throw something and feed soya-bean milk 3 times first week every day, consumption is the soya-bean milk that every 10 tail loach seedlings hello 1kg soya bean is worn into, and wheat bran of throwing something and feeding from second week, throws something and feeds 5 every day, principle is on a small quantity repeatedly, when taking to throw something and feed at regular time and quantity after the whole opening of loach;
(8), autumn parent loach seed selection: the male loach selecting female loach and fresh aquatic food, both quantitative proportions are: female loach: male loach=1:3;
(9), autumn parent loach pretreatment: in pond, apply human chorionic gonadtropin 5.1 kilograms by 1 mu, temperature controls at 26 DEG C; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 410 grams, described photosynthetic bacteria concentration is viable count 3 × 108cfu/g;
(10), autumn spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 6 kilograms, and the depth of water of breeding pond is 30cm, and water temperature is 22 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 70% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close; 3 days rear demouldings, can emerge for 4 days, and the parent loach having produced ovum shifts in time;
(11), support temporarily autumn: the spray that hatches continues to support 5 days breeding in pond, during supporting temporarily, water temperature controls at 20 DEG C, and will running water oxygenation always, when after loach seedling demoulding, within 24 hours, should to throw something and feed in time loach seedling opening material, its opening material is paramecium or young soft-shelled turtle material or Feng Lian worm, and its feeding volume is ten thousand tail 20g, and every day normally takes food until loach seedling for 2 times, can leave after long 1.5 centimetres of body and breed pond.
Embodiment 2:(1) breed the preparation in pond spring: spring with tripoli build one have water inlet and a discharge outlet breed pond, breed in pond with the plastic sack of filling earth be separated out some length 5 meters, wide 17 meters, dark 0.7 meter son breeds pond, the close net first spread mesh diameter at the bottom of the pond in pond and be less than loach seed is bred at son, about 90 order specifications, then rare net of loach seed is greater than at close online laying mesh diameter, about 13 order specifications, the edge of close net and rare net all will extend to the edge of breeding pond; And a circulation water inlet pipe is prepared in water inlet, the flow control of water inlet pipe is at 0.2L/s;
(2) spring parent loach seed selection: select the female loach just before giving birth and the male loach of fresh aquatic food, both quantitative proportions are: female loach: male loach=1:1.4;
(3) spring parent loach pretreatment: drain Chi Shui, by 1 mu with quicklime 40 kilograms, by full pool spilling head stir bed mud in time while hot after molten for quicklime water; Within one day, inject 15 centimetres, the water filtered through 28 object screen windows in backward pond, in pond, apply biological organic fertilizer 130 kilograms by 1 mu simultaneously; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 400 ~ 450 grams, described photosynthetic bacteria concentration is viable count 2 × 108cfu/g;
(4) spring spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 7 kilograms, and the depth of water of breeding pond is 32cm, and water temperature is 23 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 80% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close, is eaten up by male parent with the fish-egg prevented; 3 days rear demouldings, can emerge for 4.5 days, and the parent loach having produced ovum shifts in time;
(5) support temporarily spring: want in time the yolk water boiled and shrimp med open-mouthed bait evenly to be splashed breeding in pond after loach seedling incubation of membrane; Splash every day with probiotics, keep breeding water body to have fertilizer, work, refreshing characteristic; Loach seedling is normally taken food, after long 1.8 centimetres of body, allow loach seedling leave freely and breed pond;
(6) nursery pond hot housing in spring: breed pond temporarily support after fine day in, cultivate in nursery pond loach seedling being transferred to 280 square metres, be cultured to the very little tail that spray grows up to about 2 centimeters long, generally take 18 days, wherein the requirement of nursery pond is non sludge at the bottom of pond, and the water filling degree of depth is at 65cm;
(7) under spring, seedling is put on the pool: execute duck excrement 20kg for every square metre, when water body food organisms are agreeable to the taste, by grow up to about 4 centimeters long very little tail loach seedling under the large pool, start to throw something and feed soya-bean milk 3 times first week every day, consumption is the soya-bean milk that every 10 tail loach seedlings hello 1kg soya bean is worn into, and wheat bran of throwing something and feeding from second week, throws something and feeds 6 every day, principle is on a small quantity repeatedly, when taking to throw something and feed at regular time and quantity after the whole opening of loach;
(8), autumn parent loach seed selection: the male loach selecting female loach and fresh aquatic food, both quantitative proportions are: female loach: male loach=1:4;
(9), autumn parent loach pretreatment: in pond, apply human chorionic gonadtropin 6.6 kilograms by 1 mu, temperature controls at 28 DEG C; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 420 grams, described photosynthetic bacteria concentration is viable count 3 × 108cfu/g;
(10), autumn spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 7 kilograms, and the depth of water of breeding pond is 32cm, and water temperature is 23 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 70% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close; 3 days rear demouldings, can emerge for 4.5 days, and the parent loach having produced ovum shifts in time;
(11), support temporarily autumn: the spray that hatches continues to support 6 days breeding in pond, during supporting temporarily, water temperature controls at 22 DEG C, and will running water oxygenation always, when after loach seedling demoulding, within 24 hours, should to throw something and feed in time loach seedling opening material, its opening material is paramecium or young soft-shelled turtle material or Feng Lian worm, and its feeding volume is ten thousand tail 20g, and every day normally takes food until loach seedling for 2 times, can leave after long 1.8 centimetres of body and breed pond.
Embodiment 3:(1) breed the preparation in pond spring: spring with tripoli build one have water inlet and a discharge outlet breed pond, breed in pond with the plastic sack of filling earth be separated out some length 6 meters, wide 2.5 meters, dark 0.8 meter son breeds pond, the close net first spread mesh diameter at the bottom of the pond in pond and be less than loach seed is bred at son, about 90 order specifications, then rare net of loach seed is greater than at close online laying mesh diameter, about 13 order specifications, the edge of close net and rare net all will extend to the edge of breeding pond; And a circulation water inlet pipe is prepared in water inlet, the flow control of water inlet pipe is at 0.2L/s;
(2) spring parent loach seed selection: select the female loach just before giving birth and the male loach of fresh aquatic food, both quantitative proportions are: female loach: male loach=1:1.5;
(3) spring parent loach pretreatment: drain Chi Shui, in 1 mu of ratio with quicklime 40 kilograms, by full pool spilling head stir bed mud in time while hot after molten for quicklime water; Within one day, inject 18 centimetres, the water filtered through 35 object screen windows in backward pond, in pond, apply biological organic fertilizer 140 kilograms by 1 mu simultaneously; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 450 grams, described photosynthetic bacteria concentration is viable count 2 × 108cfu/g;
(4) spring spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 8 kilograms, and the depth of water of breeding pond is 35cm, and water temperature is 24 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 80% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close, is eaten up by male parent with the fish-egg prevented; 3 days rear demouldings, can emerge for 5 days, and the parent loach having produced ovum shifts in time;
(5) support temporarily spring: want in time the yolk water boiled and shrimp med open-mouthed bait evenly to be splashed breeding in pond after loach seedling incubation of membrane; Splash every day with probiotics, keep breeding water body to have fertilizer, work, refreshing characteristic; Loach seedling is normally taken food, after long 2 centimetres of body, allow loach seedling leave freely and breed pond;
(6) nursery pond hot housing in spring: breed pond temporarily support after fine day in, cultivate in nursery pond loach seedling being transferred to 280 square metres, be cultured to the very little tail that spray grows up to about 2 centimeters long, generally take 20 days, wherein the requirement of nursery pond is non sludge at the bottom of pond, and the water filling degree of depth is at 70cm;
(7) under spring, seedling is put on the pool: execute duck excrement 20kg for every square metre, when water body food organisms are agreeable to the taste, by grow up to about 4 centimeters long very little tail loach seedling under the large pool, start to throw something and feed soya-bean milk 3 times first week every day, consumption is the soya-bean milk that every 10 tail loach seedlings hello 1kg soya bean is worn into, and wheat bran of throwing something and feeding from second week, throws something and feeds 7 every day, principle is on a small quantity repeatedly, when taking to throw something and feed at regular time and quantity after the whole opening of loach;
(8), autumn parent loach seed selection: the male loach selecting female loach and fresh aquatic food, both quantitative proportions are: female loach: male loach=1:5;
(9), autumn parent loach pretreatment: in pond, apply human chorionic gonadtropin 7.2 kilograms by 1 mu, temperature controls at 30 DEG C; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 440 grams, described photosynthetic bacteria concentration is viable count 3 × 108cfu/g;
(10), autumn spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 8 kilograms, and the depth of water of breeding pond is 30-35cm, and water temperature is 24 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 70% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close; 3 days rear demouldings, can emerge for 5 days, and the parent loach having produced ovum shifts in time;
(11), support temporarily autumn: the spray that hatches continues to support 7 days breeding in pond, during supporting temporarily, water temperature controls at 25 DEG C, and will running water oxygenation always, when after loach seedling demoulding, within 24 hours, should to throw something and feed in time loach seedling opening material, its opening material is paramecium or young soft-shelled turtle material or Feng Lian worm, and its feeding volume is ten thousand tail 20g, and every day normally takes food until loach seedling for 2 times, can leave after long 2 centimetres of body and breed pond.
Claims (1)
1. loach propagation method of two season in spring and autumn, comprises the steps:
(1) breed the preparation in pond spring: spring with tripoli build one have water inlet and a discharge outlet breed pond, breed in pond with the plastic sack of filling earth be separated out some long 4-6 rice, wide 1.5-2.5 rice, dark 0.6-0.8 rice son breed pond, the close net first spread mesh diameter at the bottom of the pond in pond and be less than loach seed is bred at son, about 90 order specifications, then rare net of loach seed is greater than at close online laying mesh diameter, about 13 order specifications, the edge of close net and rare net all will extend to the edge of breeding pond; And a circulation water inlet pipe is prepared in water inlet, the flow-control of water inlet pipe is at 0.2L/s;
(2) spring parent loach seed selection: select the female loach just before giving birth and the male loach of fresh aquatic food, both quantitative proportions are: female loach: male loach=1:1.2-1.5;
(3) spring parent loach pretreatment: drain Chi Shui, by 1 mu with quicklime 40 kilograms, by full pool spilling head stir bed mud in time while hot after molten for quicklime water; Within one day, inject 10 ~ 18 centimetres, the water filtered through 20 ~ 35 object screen windows in backward pond, in pond, apply biological organic fertilizer 110 ~ 140 kilograms by 1 mu simultaneously; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 400 ~ 450 grams, described photosynthetic bacteria concentration is viable count 2 × 108cfu/g;
(4) spring spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 6-8 kilogram, and the depth of water of breeding pond is 30-35cm, and water temperature is 22-24 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 80% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close, is eaten up by male parent with the fish-egg prevented; 3 days rear demouldings, can emerge for 4-5 days, and the parent loach having produced ovum shifts in time;
(5) support temporarily spring: want in time the yolk water boiled and shrimp med open-mouthed bait evenly to be splashed breeding in pond after loach seedling incubation of membrane; Splash every day with probiotics, keep breeding water body to have fertilizer, work, refreshing characteristic; Loach seedling is normally taken food, after long 1.5 ~ 2 centimetres of body, allow loach seedling leave freely and breed pond;
(6) nursery pond hot housing in spring: breed pond temporarily support after fine day in, cultivate in nursery pond loach seedling being transferred to 280 square metres, be cultured to the very little tail that spray grows up to about 2 centimeters long, generally take 15-20 days, wherein the requirement of nursery pond is non sludge at the bottom of pond, and the water filling degree of depth is at 60-70cm;
(7) under spring, seedling is put on the pool: execute the duck excrement 20kg that ferments for every square metre, when water body food organisms are agreeable to the taste, by grow up to about 4 centimeters long very little tail loach seedling under the large pool, start to throw something and feed soya-bean milk 3 times first week every day, consumption is the soya-bean milk that every 10 tail loach seedlings hello 1kg soya bean is worn into, wheat bran of throwing something and feeding from second week, and every day throws something and feeds 5-7 time, principle is on a small quantity repeatedly, when taking to throw something and feed at regular time and quantity after the whole opening of loach;
(8), autumn parent loach seed selection: the male loach selecting female loach and fresh aquatic food, both quantitative proportions are: female loach: male loach=1:3-5;
(9), autumn parent loach pretreatment: in pond, apply human chorionic gonadtropin 5.1 ~ 7.2 kilograms by 1 mu, temperature controls at 26-30 DEG C; Sprinkle into probiotics water transfer to the every day before putting into close loach to pond after water filling, by 1 mu each 410 ~ 440 grams, described photosynthetic bacteria concentration is viable count 3 × 108cfu/g;
(10), autumn spawning and hatching: put into by parent's male and female loach good for pretreatment and readyly breed pond, every height breeds the parent loach that pond puts into 6-8 kilogram, and the depth of water of breeding pond is 30-35cm, and water temperature is 22-24 DEG C, and breeding period will oxygenation always; When loach spawning rate reaches 70% time, the rare net in pond is bred in pull-up, and what allow Fertilized Eggs of Loach drain to below in time is on the net close, and 3 days rear demouldings, can emerge for 4-5 days, and the parent loach having produced ovum shifts in time;
(11), support temporarily autumn: the spray hatched continues breeding foster 5-7 days in pond, during supporting temporarily, water temperature controls at 20-25 DEG C, and will running water oxygenation always, when after loach seedling demoulding, within 24 hours, should to throw something and feed in time loach seedling opening material, its opening material is paramecium or young soft-shelled turtle material or Feng Lian worm, and its feeding volume is ten thousand tail 20g, and every day normally takes food until loach seedling for 2 times, can leave after long 1.5 ~ 2 centimetres of body and breed pond.
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