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Fry cultivating method for loaches

A technology for loach and loach seedlings, which is applied in the field of aquaculture, can solve the problems of difficulty in forming a large-scale industry, low emergence rate, low fertilization rate of artificial loach seedlings, etc., and achieves the effects of food safety and health and improving the survival rate.

Inactive Publication Date: 2016-05-04
太和县旭升水产养殖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, a mature technical system has not been formed in the entire process of parent loach cultivation, oxytocin drug selection and compatibility, oxytocin, hatching and larvae opening cultivation, resulting in low fertilization rate, high mortality rate, and low emergence rate of loach artificial seedlings. It is difficult to form a stable large-scale industry by providing loach seedlings for breeding in batches in a timely manner

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A seedling raising method for loach, specifically comprising the following steps:

[0026] (1) Selection of parent loach: From April to May in spring, the water temperature is 19-21°C. Choose a mature loach with a good body shape, a strong physique, a lot of mucus, and no injuries as a parent. The female loach is 13-18 cm long and weighs 32 cm. ~38g, the abdomen is swollen and soft, slightly pink in color and elastic; the male loach is 13-18cm long and weighs 23-27g;

[0027] (2) Cultivation of brood loach: raise brood loach separately in an area of ​​100m according to the ratio of the number of male and female fish at a ratio of 2.5:1 2 , In the parent loach breeding pond with a water depth of 70cm, the stocking density is 0.7kg / m 2 3 days before the close loach is put in a suitable place to breed, utilize disinfectant to carry out clear pond disinfection, reinforce the pond ridge, before putting in a suitable place to put in a suitable place, the close loach is that ...

Embodiment 2

[0042] A seedling raising method for loach, specifically comprising the following steps:

[0043] (1) Selection of parent loach: From April to May in spring, the water temperature is 19-21°C. Choose a mature loach with a good body shape, a strong physique, a lot of mucus, and no injuries as a parent. The female loach is 13-18 cm long and weighs 32 cm. ~38g, the abdomen is swollen and soft, slightly pink in color and elastic; the male loach is 13-18cm long and weighs 23-27g;

[0044] (2) Cultivation of brood loach: raise brood loach separately in an area of ​​105m according to the ratio of the number of male to female at 2.8:1 2 , In the parent loach breeding pond with a water depth of 75cm, the stocking density is 0.8kg / m 2 3 days before the close loach is put in a suitable place to breed, utilize disinfectant to carry out clear pond disinfection, reinforce the pond ridge, before putting in a suitable place to put in a suitable place, close loach is that the saline solution o...

Embodiment 3

[0059] A seedling raising method for loach, specifically comprising the following steps:

[0060] (1) Selection of parent loach: From April to May in spring, the water temperature is 19-21°C. Choose a mature loach with a good body shape, a strong physique, a lot of mucus, and no injuries as a parent. The female loach is 13-18 cm long and weighs 32 cm. ~38g, the abdomen is swollen and soft, slightly pink in color and elastic; the male loach is 13-18cm long and weighs 23-27g;

[0061] (2) Cultivation of brood loach: Raise the brood loach separately in an area of ​​110m according to the ratio of the number of males and females at a ratio of 3:1 2 , In the parent loach breeding pond with a water depth of 80cm, the stocking density is 0.9kg / m 2 3 days before the close loach is stocked in a suitable place to breed, utilize disinfectant to carry out the clear pond disinfection, reinforce the pond ridge, before stocking the close loach is 4.6% (w / w) saline cleaning disinfection 8 min...

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Abstract

The invention discloses a fry cultivating method for loaches. The fry cultivating method specifically comprises the steps of parent loach selection, parent loach cultivation, artificial spawning induction, artificial insemination, fertilized egg hatch, loach fry management and loach fry treatment. According to the fry cultivating method for the loaches, spawning induction is performed with multiple kinds of oxytocin, and the induced spawning rate reaches 100% by performing back muscle injection with two needles; seminal fluid and spawns of the loaches are acquired through an extrusion method, the female loach number is larger than the male loach number to enable the sperm number to be equivalent to the spawn number, hatching is monitored regularly, the fertilization rate reaches 87.4%-89.3%, and the hatching rate reaches 96.3%-97.5%; loach fries are cultured by stages after breaking out of membranes, the feed feeding amount and the culture density are strictly controlled, and the loach fry survival rate is increased and reaches 86.7%-87.8%; a pond is sterilized and disinfected with traditional Chinese medicine, the traditional Chinese medicine can be naturally decomposed and cannot be retained in loach bodies, and therefore eating is safe and healthy; parent loaches are sold immediately or prepared into dried loaches after being extruded, and therefore economic loss cannot be caused to farmers.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for raising seedlings of loach. Background technique [0002] Loach has lower fat content, less cholesterol, high-protein and low-fat food, and contains an unsaturated fatty acid similar to eicosapentenoic acid, which is beneficial to the human body's anti-vascular aging, and is beneficial to the elderly and cardiovascular patients. It has the effects of invigorating the middle and replenishing qi, dehumidifying and reducing jaundice, nourishing the kidney and supporting yang, dispelling dampness and stopping diarrhea, warming the spleen and stomach, treating hemorrhoids, and stopping sweating due to sweating. It is called "ginseng in water". [0003] In recent years, the scale of loach farming has developed rapidly, and seedlings have become a bottleneck restricting the development of the industry. At present, the seedlings of loach farming in my country are mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00C02F1/50A23K50/80A23K10/20A23K10/30A23K20/147
CPCA01K61/00C02F1/50C02F2303/04Y02A40/81Y02A40/818
Inventor 梁贺毕伸王慧魏泽能周恒芝李广军
Owner 太和县旭升水产养殖有限公司
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