Method of breeding and propagation of yellow-head catfish in Nansi lake

Abstract

The invention discloses a method of breeding and propagation of yellow-head catfish in Nansi lake. The method of breeding and propagation of yellow-head catfish in Nansi lake includes the steps: selecting inherent wild yellow-head catfish in the lake from different locations in the Nansi lake; after cultivating and establishing a parent fish family, and selecting high quality yellow-head catfish from the parent fish family as the parent fish; after three generations of hybridization, selecting the filial generation with a stable inheritable character, of yellow-head catfish as the parent fish to cultivate in a special pond for breeding the progeny of yellow-head catfish; and after propagation and cultivation, selecting high quality yellow-head catfish among the progeny of yellow-head catfish, releasing the high quality yellow-head catfish in the lake and realizing hybridization between the high quality yellow-head catfish and the wild yellow-head catfish in the lake. Therefore, the method of breeding and propagation of yellow-head catfish in Nansi lake optimizes the character of the wild yellow-head catfish in the Nansi lake, improves the fish production of yellow-head catfish in the lake area, and realizes autonomous breeding and propagation of the high quality yellow-head catfish in the lake.

Description

technical field [0001] The invention relates to the technical field of aquatic products, in particular to a method for breeding and multiplication of yellow catfish in Nansi Lake. Background technique [0002] The common name of yellow catfish is "sloe fish", which is a typical carnivorous omnivorous fish. Because Nansi Lake is rich in aquatic animals and plants that can be eaten by the yellow catfish, and the yellow catfish in Nansi Lake has the characteristics of long spawning period and large reproductive capacity, the overall output of yellow catfish is important among wild fish in Nansi Lake. The status makes the yellow catfish the most important economic fish in Nansi Lake; the wild yellow catfish in Nansi Lake is rich in nutrition and delicious, and is very popular among people. In recent years, due to disordered breeding and frequent introduction of other species of yellow catfish into the lake, wild catfish species in Nansi Lake have been mixed seriously. The size...

AI Technical Summary

Problems solved by technology

In recent years, due to disordered breeding and frequent introduction of other species of yellow catfish into the lake, wild catfish species in Nansi Lake have been mixed seriously. The size of the wild yellow catfish is getting smaller and smaller, and the number is getting smaller and smaller, losing the species advantage of the wild yellow catfish in Nansi Lake