CN104126533B - A kind of high-survival rate loach breeding method - Google Patents

Abstract

The present invention provides a kind of high-survival rate loach breeding method, comprises the steps: to breed the preparation in pond; Breed the sterilization in pond; The seed selection of parent loach; The pre-treatment of parent loach; Produce son hatching; The spray hatched is supported temporarily; Nursery pond hot housing; Seedling or sale are put in the lower pool. Adopting present method to breed mud fish fry, its surviving rate, up to 95%, adopts the method manually hastened parturition, reduces the cycle laid eggs, it is to increase the efficiency of cultivation, during hatching, adopts flowing current hatching, avoids that zygote deposits at the bottom of pond and anoxic is lethal; The cooperation of rare net, close net, can effectively prevent zygote from being pressed lethal or being eaten up by parent loach, it is to increase hatching rate.

Description

A kind of high-survival rate loach breeding method

Technical field

The present invention relates to technical field of aquaculture, it is specifically related to a kind of high-survival rate loach breeding method.

Background technology

Loach is containing high protein and lower fat, and Fresh & Tender in Texture, nutritious, delicious flavour, is rich in multivitamin and mineral substance, has very high nutritive value and pharmaceutical use. these years due to overfishing, particularly the spreading unchecked of electric fishing loach, adds that the loach resource used in a large number in farmland in the agricultural chemicals that loach is harmful and the change of cropping system, natural water area and paddy field falls sharply year by year, propagates loach artificially and occur thereupon. the artificial propagation techniques of loach is updated by domestic and international Duo Jia aquatic products R&D institution and aquatic products worker, 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 this method is cultivated, when growing into very little sheet (3cm length), survival rate is 5%-10% only, 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, find after deliberation, when loach fry grows to large gauge (5-8cm) seed, throw in pond culture again, the surviving rate of loach can up to 90%. but, domestic nursery level falls behind, and the rate of fertilization of loach is low, it is possible to from loach is fertilized, only has 10%-20% to survival rate mud fish fry cultivated to large size seedling seed (5-8cm), seriously governs the demand of large-scale cultivation loach.

Summary of the invention

For the deficiency that above-mentioned prior art exists, the present invention provide a kind of surviving rate up to 95% high-survival rate loach breeding method.

The technical scheme of the present invention is to provide a kind of high-survival rate loach breeding method, comprises the steps:

(1) preparation in pond is bred: build multiple long 2-3 rice, wide 2-3 rice, dark 0.3-0.5 rice with cement, and have water-in and a water port breed pond, breeding the close net first spread mesh diameter at the bottom of the pond in pond and be less than loach seed, about 100 order specifications, then rare net of loach seed it is greater than at close online laying mesh diameter, about 16 order specifications, the edge of close net and rare net all to be extended to the edge breeding pond; And a circulation water inlet pipe is prepared in water inlet, the flow rate control of water inlet pipe, at 0.1L/s, can supplement running water and oxygen, can not bother again the fertilization and hatching of loach;

(2) sterilization in pond is bred: sterilize with lime water full pool spilling head before pouring water;

(3) seed selection of parent loach: the male loach selecting the female loach before just before giving birth and fresh aquatic food, both quantitative proportions are: female loach: male loach=1:2-3, and when the concrete selecting method of female loach is for grabbing with hand, those can discharge the female loach of yellow transparent fish seed;

(4) pre-treatment of parent loach: sterilizing once first to parent loach, injection of then hastening parturition, the dosage of pin of wherein hastening parturition is female loach 0.2mg/ tail, male loach 0.1mg/ tail is sterilized once to parent loach again after playing pin of hastening parturition; The specific practice wherein sterilized is: parent loach is put into 3% double-chain quaternary ammonium salt liquid or 4% povidone iodine soak 5 minutes, then put into throw in have the water of disinfection of Chinese drug treasured to sterilize;

(5) producing son hatching: being put into by parent male and female loach good for pre-treatment and ready breed pond, each breeds the parent loach that pond puts into 4-5 kilogram, and the depth of water breeding pond is 20-25cm, and water temperature is 20-25 DEG C, breeding period will oxygenation always; When loach produce sub-rate reach 80% time, the rare net in pond is bred in pull-up, and what allow loach zygote drains to below in time is on the net close, to prevent the fish-egg produced is eaten up by male parent; Within general about 2 days, getting final product demoulding, within 3 days about half, can emerge, the parent loach having produced son shifts in time;

(6) spray hatched is supported temporarily: the spray that hatches continues to support 5-7 days breeding 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 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, every day 2 times;

(7) nursery pond hot housing: breed pond temporarily support after fine day in, spray is transferred to and cultivates in the nursery pond of 200 square metres, it is cultured to spray and grows up to about 3 centimeters of long very little tails, generally take 25-28 days, wherein the requirement of nursery pond is non sludge at the bottom of pond, and the water filling degree of depth is at more than 50-80cm, pond stalk is solid, and harmful organisms can not enter in pond;

(8) under, seedling or sale are put in the pool: put Miao Qianxian and cleaned up the pond in pond sterilization, disinfecting drug is unslaked lime, sterilize with unslaked lime 1.5kg for every 10 square metres, execute by the base manure 15kg of chicken manure fermenting for every square metre after two days, when water body food organism are agreeable to the taste, by the big pool under growing up to the very little tail loach seedling of about 3 centimeters long, start to throw something and feed soya-bean milk 2 times first week every day, consumption is the soya-bean milk that every 10 tail loach seedlings hello 1kg soya bean is worn into, throw something and feed from second week powder material, every day throws something and feeds 3-4 time, and 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; Or directly by the very little tail sale of 3 centimeters long.

Its oxytocic drug described is dom and chorion or analogue, when water temperature is at 18-25 DEG C, dom and chorion can be adopted to carry out, dom dosage is every kg parent 4 units, chorion is every kg parent 800 unit, when water temperature is more than 25 DEG C, dom and analogue are adopted in application, if continuing to use dom and chorion, a large amount of death of parent can be caused, dom and its dosage of analogue are dom every kg parent 4 units, analogue is every kg parent 20 microgram, when hasten parturition loach time, it is equipped with medicine according to the male and female total amount half of male weight (the female weight add), its injected dose is female 0.2ml/ tail, male 0.1ml/ tail, and damage by the medicine of 10% and calculate dosage.

The advantage of the present invention: adopt present method to breed mud fish fry, its surviving rate, up to 95%, adopts the method manually hastened parturition, reduce the cycle laid eggs, it is to increase the efficiency of cultivation, during hatching, adopt flowing current hatching, avoid that zygote deposits at the bottom of pond and anoxic is lethal; The cooperation of rare net, close net, can effectively prevent zygote from being pressed lethal or being eaten up by parent loach, it is to increase hatching rate.

Embodiment

Now come in conjunction with specific embodiments to set forth the present invention further.

Embodiment 1: a kind of high-survival rate loach breeding method of the present invention, comprises the steps:

(1) preparation in pond is bred: build multiple long 2-3 rice, wide 2-3 rice, dark 0.3-0.5 rice with cement, and have water-in and a water port breed pond, breeding the close net first spread mesh diameter at the bottom of the pond in pond and be less than loach seed, then the rare net being greater than loach seed at close online laying mesh diameter, the edge of close net and rare net all to be extended to the edge breeding pond; And a circulation water inlet pipe is prepared in water inlet, the flow rate control of water inlet pipe is at 0.1L/s so that it is can reach and can supplement running water and oxygen, can not bother again the object of the fertilization and hatching of loach.

(2) sterilization in pond is bred: sterilize with lime water full pool spilling head before pouring water.

(3) seed selection of parent loach: the loach parent selecting sexual maturity, the quantitative proportion of male and female is: female loach: male loach=1:2-3, when the concrete selecting method of female loach is for grabbing with hand, those can discharge the female loach of yellow transparent fish seed.

(4) pre-treatment of parent loach: sterilize once first to parent loach, then hasten parturition injection, the dosage of pin of wherein hastening parturition is female loach 0.2mg/ tail, male loach 0.1mg/ tail, sterilize once to parent loach again after playing pin of hastening parturition, the specific practice wherein sterilized is: parent loach is put into 3% double-chain quaternary ammonium salt liquid or 4% povidone iodine soak 5 minutes, then put into throw in have the water of disinfection of Chinese drug treasured to sterilize.

Oxytocic drug is dom and chorion or analogue, when water temperature is at 18-25 DEG C, dom and chorion can be adopted to carry out, dom dosage is every kg parent 4 units, chorion is every kg parent 800 unit, when water temperature is more than 25 DEG C, dom and analogue are adopted in application, if continuing to use dom and chorion, a large amount of death of parent can be caused, dom and its dosage of analogue are dom every kg parent 4 units, analogue is every kg parent 20 microgram, when hasten parturition loach time, it is equipped with medicine according to the male and female total amount half of male weight (the female weight add), its injected dose is female 0.2ml/ tail, male 0.1ml/ tail, and damage by the medicine of 10% and calculate dosage.

The method of injection is: the medicine that will be equipped with, and by female male individual 0.2ml/ tail, male individual 0.1ml/ tail carries out the injection of base portion, back, then puts into and waits that producing net cage waits to produce.

(5) producing son hatching: being put into by parent male and female loach good for pre-treatment and ready breed pond, each breeds the parent loach that pond puts into 4-5 kilogram, and the depth of water breeding pond is 20-25cm, and water temperature is 20-25 DEG C, breeding period will oxygenation always; When loach produce sub-rate reach 80% time, the rare net in pond is bred in pull-up, and what allow loach zygote drains to below in time is on the net close, to prevent the fish-egg produced is eaten up by male parent; Within general about 2 days, getting final product demoulding, within 3 days about half, can emerge, the parent loach having produced son shifts in time.

(6) spray hatched is supported temporarily: the spray that hatches continues to support 5-7 days breeding in pond, during supporting temporarily, water temperature controls at 20-25 DEG C, and will running water oxygenation always, when after loach seedling demoulding, loach seedling opening material of should throwing something and feeding in time for 24 hours, its opening material is mainly based on paramecium, if not having paramecium to throw something and feed, just throwing something and feeding young soft-shelled turtle material, its feeding volume is ten thousand tail 20g, every day 2 times; If producing in batches, Feng Lian worm of just throwing something and feeding.

(7) nursery pond hot housing: breed pond temporarily support after fine day in, spray is transferred to and cultivates in the nursery pond of 200 square metres, it is cultured to spray and grows up to about 3 centimeters of long very little tails, generally take 25-28 days, wherein the requirement of nursery pond is non sludge at the bottom of pond, and the water filling degree of depth is at more than 50-80cm, pond stalk is solid, and harmful organisms can not enter in pond.

(8) under, seedling or sale are put in the pool: put Miao Qianxian and cleaned up the pond in pond sterilization, disinfecting drug is unslaked lime, sterilize with unslaked lime 1.5kg for every 10 square metres, execute by the base manure 15kg of chicken manure fermenting for every square metre after two days, when water body food organism are agreeable to the taste, by the big pool under growing up to the very little tail loach seedling of about 3 centimeters long, start to throw something and feed soya-bean milk 2 times first week every day, consumption is the soya-bean milk that every 10 tail loach seedlings hello 1kg soya bean is worn into, throw something and feed from second week powder material, every day throws something and feeds 3-4 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, day, feeding volume was generally at the 2%-3% of loach gross weight, or directly by the very little tail sale of 3 centimeters long.

Claims (1)

1. a high-survival rate loach breeding method, comprises the steps:

(1) preparation in pond is bred: build multiple long 2-3 rice, wide 2-3 rice, dark 0.3-0.5 rice with cement, and have water-in and a water port breed pond, breeding the close net first spread mesh diameter at the bottom of the pond in pond and be less than loach seed, about 100 order specifications, then rare net of loach seed it is greater than at close online laying mesh diameter, about 16 order specifications, the edge of close net and rare net all to be extended to the edge breeding pond; And a circulation water inlet pipe is prepared in water inlet, the flow rate control of water inlet pipe, at 0.1L/s, can supplement running water and oxygen, can not bother again the fertilization and hatching of loach;

(2) sterilization in pond is bred: sterilize with lime water full pool spilling head before pouring water;

(3) seed selection of parent loach: the male loach selecting the female loach before just before giving birth and fresh aquatic food, both quantitative proportions are: female loach: male loach=1:2-3, and when the concrete selecting method of female loach is for grabbing with hand, those can discharge the female loach of yellow transparent fish seed;

(4) pre-treatment of parent loach: sterilizing once first to parent loach, injection of then hastening parturition, the dosage of pin of wherein hastening parturition is female loach 0.2mg/ tail, male loach 0.1mg/ tail is sterilized once to parent loach again after playing pin of hastening parturition; The specific practice wherein sterilized is: parent loach is put into 3% double-chain quaternary ammonium salt liquid or 4% povidone iodine soak 5 minutes, then put into throw in have the water of disinfection of Chinese drug treasured to sterilize;

(5) producing son hatching: being put into by parent male and female loach good for pre-treatment and ready breed pond, each breeds the parent loach that pond puts into 4-5 kilogram, and the depth of water breeding pond is 20-25cm, and water temperature is 20-25 DEG C, breeding period will oxygenation always; When loach produce sub-rate reach 80% time, the rare net in pond is bred in pull-up, and what allow loach zygote drains to below in time is on the net close, to prevent the fish-egg produced is eaten up by male parent; Within general about 2 days, getting final product demoulding, within 3 days about half, can emerge, the parent loach having produced son shifts in time;

(6) spray hatched is supported temporarily: the spray that hatches continues to support 5-7 days breeding 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 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, every day 2 times;

(7) nursery pond hot housing: breed pond temporarily support after fine day in, spray is transferred to and cultivates in the nursery pond of 200 square metres, it is cultured to spray and grows up to about 3 centimeters of long very little tails, take 25-28 days, wherein the requirement of nursery pond is non sludge at the bottom of pond, and the water filling degree of depth is at 50-80cm, pond stalk is solid, and harmful organisms can not enter in pond;

(8) under, seedling or sale are put in the pool: put Miao Qianxian and cleaned up the pond in pond sterilization, disinfecting drug is unslaked lime, sterilize with unslaked lime 1.5kg for every 10 square metres, execute by the base manure 15kg of chicken manure fermenting for every square metre after two days, when water body food organism are agreeable to the taste, by the big pool under growing up to the very little tail loach seedling of about 3 centimeters long, start to throw something and feed soya-bean milk 2 times first week every day, consumption is the soya-bean milk that every 10 tail loach seedlings hello 1kg soya bean is worn into, throw something and feed from second week powder material, every day throws something and feeds 3-4 time, and 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; Or directly by the very little tail sale of 3 centimeters long.