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Method for artificially propagating pseudobagrus fulvidraco fries in autumn

A technology for artificial reproduction and yellow catfish, applied in fish farming, application, climate change adaptation, etc., can solve problems such as underreporting of fish, and achieve the effect of improving efficiency, survival rate, and reducing deformity rate.

Inactive Publication Date: 2017-06-09
湖州市水产技术推广站 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Artificial breeding of fish fry in summer and autumn, especially in autumn, is rarely reported at present, especially the artificial breeding of yellow catfish fry in autumn

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of artificial reproduction method of autumn peltridge fry, comprises the following steps:

[0033] (1) Selection and breeding of broodstock: The morphological and structural characteristics meet the requirements of SC1070, and the age is above 2 winter ages and below 5 winter ages, with normal body shape, strong physique, smooth body surface, no disease, and no deformity.

[0034] ①Female parent: common yellow catfish female body, the broodstock female parent that had undergone induction of labor and spawned successfully between May 25 and June 6 was fed in a stocking pond with 40% crude protein compound feed, after 2 Months of intensive cultivation of maturing mothers again.

[0035] ②Male parent: the super male parent (YY) that produces all male yellow catfish, with a weight specification of 155g / tail; 3 fish.

[0036] (2) Oviposition and fertilization

[0037] Artificial induction of labor with hormones: The average weight of the female broodstock is 80g / t...

Embodiment 2

[0043] A method for artificially propagating yellow catfish fry in autumn, comprising the following steps:

[0044] (1) Selection and cultivation of broodstock

[0045] ①Female parent: common yellow catfish female, broodstock female parent that had undergone induction of labor and spawned successfully between May 25 and June 6, was fed compound feed with 40% crude protein in stocking ponds, after 2 and a half months of intensive cultivation of maturing mothers again.

[0046] ②Male parent: Jianghuang catfish male, average size 855g / tail, 5 fish.

[0047] (2) Oviposition and fertilization

[0048] Artificial induction of labor with hormones: the water temperature in the reservoir is adjusted to 28-30°C after planting aquatic plants, the average size of the female parent fish is 80g / tail, and the abdomen is soft and swollen, with obvious ovarian contours, ventral grooves, and reddish genital pores; in the morning 9:00~11:00 Injection, inject exogenous hormones to the female ...

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PUM

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Abstract

The invention discloses a method for artificially propagating pseudobagrus fulvidraco fries in autumn. The method comprises the following steps: (1) selecting and cultivating parents; (2) cultivating the parents; (3) laying eggs and fertilizing, namely a, carrying out artificial spawning by adopting exogenous hormones; and b, carrying out artificial insemination; and (4) carrying out incubation management. The method for artificially propagating the pseudobagrus fulvidraco fries is specific to summer and autumn high-temperature seasons, malformation rate of the fries is reduced, and effective rate and survival rate of the fries are improved.

Description

technical field [0001] The invention belongs to the field of aquaculture, and relates to a method for artificial propagation of freshwater fish fry, in particular to an artificial propagation method for autumn yellow catfish fry. Background technique [0002] Yellow catfish is a high-quality omnivorous small bottom-dwelling fish. Because it has no intermuscular spines, the meat is tender, delicious, and rich in nutrition, it is popular with consumers and is available fresh all year round. In recent years, the farming of yellow catfish has developed rapidly, and adult fish have been continuously marketed after reaching commercial specifications. During the period from March to October, adult fish need to enter a new cycle of stocking seed production after they are on the market, and the seedlings required for stocking during the period require continuous supply. [0003] The breeding method of peltrow catfish fry, such as the patent No. CN101263793A, discloses a kind of pelt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10
CPCA01K61/00Y02A40/81
Inventor 周志金胡大雁费志平
Owner 湖州市水产技术推广站
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