Artificial-propagation and fry-raising method for pseudobagrus fulvidraco

Abstract

The invention discloses an artificial-propagation and fry-raising method for pseudobagrus fulvidraco. The method comprises the following steps: selecting almost-mature pseudobagrus fulvidraco, and independently feeding female pseudobagrus fulvidraco and male pseudobagrus fulvidraco; adding oxytocin into a feed, feeding the pseudobagrus fulvidraco with the feed for a period of time, additionally carrying out white light illumination, and adding an ovulation induction agent in a later period; carrying out mixed feeding on the female pseudobagrus fulvidraco and the male pseudobagrus fulvidraco, separating a pool into two parts by virtue of a fishing net, separating all the pseudobagrus fulvidraco to one side close to a water inlet of the pool, carrying out feeding, adding a spawning agent into water, and keeping flowing water at a flowing state; maintaining the temperature of water, regulating a pH value in the water, pumping oxygen into the pool, and waiting until spawns are fertilized and incubated; after incubation, properly enlarging a feeding range of the fries, dissolving a fry-raising into water for feeding, carrying out proper white light illumination, screening the fries withdifferent volumes after 10-20 days, separating the fries, and carrying out feeding. The invention provides the method for rapidly carrying out artificial propagation operation and fry raising. According to the method, artificial spawning induction of the pseudobagrus fulvidraco can be realized in a relatively natural state, the operation is easy and convenient, and a propagation effect is good.

Description

technical field [0001] The invention relates to the technical field of fish seedling raising, in particular to a method for artificial propagation and seedling raising of yellow catfish. Background technique [0002] The yellow catfish belongs to the order Syriformes, the genus Catfish, and is a kind of high-quality and valuable economic fish in freshwater waters. The artificial breeding of yellow catfish has been carried out in many parts of the country, and the scale of breeding has increased year by year. In 2015, the aquaculture output of yellow catfish in my country exceeded 350,000 tons. The fry breeding of catfish such as yellow catfish is basically artificial induction of labor, multiple injections of drugs, male killing and sperm extraction, and hatching in special hatching tanks; this leads to a serious imbalance in the ratio of males and females in natural waters, resulting in serious natural resource exhaustion. There are certain hidden dangers in safety, and the...

AI Technical Summary

Problems solved by technology

[0002] The yellow catfish belongs to the Siluriformes, the family Pleurotus, and the genus of the yellow catfish. It is a high-quality and valuable economic fish in freshwater waters. It is loved by people because of its delicious meat. Artificial breeding of yellow catfish has been carried out in many parts of the country, and the scale of farming has increased year by year. In 2015, the cultured output of yellow catfish in my country exceeded 350,000 tons

Fry breeding of catfish and other Siluriformes is basically artificial induced labor, multiple injections of drugs, killing males and extracting sperm, and hatching in special hatching tanks; this leads to a serious imbalance in the ratio of males and females in natural waters, resulting in serious depletion of natural resources. There are certain hidden dangers in safety, and the work efficiency of artificial injection induced labor technology is slow. Therefore, it is necessary to find a method that can solve the above problems

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