Cross-breeding method of river sand snakehead and duck green sand snakehead

A technology of the duck-green sand snakehead and sand snakehead, applied in fish farming, application, climate change adaptation, etc., can solve problems that have not been reported in the technology, and achieve superior disease resistance, strong vitality, and superior growth speed Effect

Inactive Publication Date: 2016-01-20
FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As far as the applicant knows, there is no technical report on the hybrid breeding of the river channa and the duckling channa

Method used

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with embodiment.

[0033] A method for cross-breeding river snakeheads and duck-green snakeheads, comprising the following steps:

[0034] l. Parent selection and cultivation

[0035] In the autumn of 2011, select river channa gnats over 2 years of age without disease or injury, male fish weighing more than 75g, and female fish weighing more than 50g; The ducklings with a fish weight of more than 40g are used as hybrid breeding parents, and the ratio of male and female fish is 1:1. They are put into spawning ponds, stocked at 150-200kg per mu, and the depth of the pond is 1.5 meters. During the breeding period, they are fed. With fish and shrimp as bait, flush water once every 10 days from the beginning of March, for 1-2 hours each time, to promote the maturation of gonads;

[0036] 2. Hybrid breeding

[0037] 1) Artificial induced labor

[0038] From late March to April in 2012 and 2013, female fi...

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Abstract

A cross breeding method of odontobutis potamophila and odontobutis yaluensis is characterized by comprising the steps of parent selection and breeding, cross breeding and crossbreed fry rearing, wherein after fertilized egg membrane releasing is completed, a PVC pipe is timely taken out; after membrane releasing is carried out for 3 days, fry yolk sacs are eliminated; when fries can swim flatly, the fries start to open mouths to eat microplankton bait which mainly comprises wheel animalcule and cladocerans, and at least about 10 pieces of palatable bait are maintained underwater per milliliter. After membrane releasing is carried out for 10 days, the fries swim actively, certain copepoda, artemia and other kinds of macrozooplankton need to be supplemented at the moment, the feeding amount is properly added, and more than 15 pieces of the palatable bait are maintained under water per milliliter. When the fries are 1 centimeter long, the fries are shifted into a fry breeding pool where biological bait is cultivated in advance according to the density of 30-50 thousands fries per mu, small raw fishmeal or soybean cake powder is additionally thrown into the pool by means of additional points in the pool, and the daily feeding amount occupies about 5% of the weight of fish. The feeding frequency is twice a day in the morning and at afternoon. The average survival rate of juvenile fish bred by fry cross breeding reaches more than 85% and is higher than the survival rate of parent selfing.

Description

technical field [0001] The invention relates to a method for breeding edible fish, in particular to a method for hybrid breeding of fish, in particular to a method for hybrid breeding of river snakehead and duck-green snakehead. Background technique [0002] Cross breeding is the most classic breeding method. Different types of parents can be crossed to obtain hybrid offspring with gene recombination and rich types. Some types may be a combination of excellent traits of both parents, and excellent traits of super-parents may also appear. In fishery, the use of heterosis has become an important way to increase fishery output. [0003] Odontobutis potamophila Günther belongs to the order Perciformes, suborder Gobioidei, family Eleotridae, Odontobutis, and is distributed in the middle and lower reaches of the Yangtze River and its tributaries, Qiantang Jiang River System and Minjiang River System, etc. It has high meat content, delicate meat quality and delicious meat taste,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 李潇轩徐宇夏爱军史杨白朱锡和王崇华赵福海段贵平
Owner FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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