One age large scale seedling growing method for four main fishes without public pollution

Abstract

A method for culturing one-instar fry of black carp, grass carp, silver carp and variegated carp includes choosing rarieties, pretreating pond, proportionally culturing them in a single pond, regulating water quality, and scientifically applying feed and fertilizer.

Description

Technical field [0001] The invention relates to a method for cultivating fish, in particular to a method for cultivating one-year-old large-size seedlings of the pollution-free "four major family carps". Background technique [0002] "Four major fish" refer to herring, grass carp, silver carp and bighead carp. It is a special freshwater economic fish in my country. It has excellent characteristics such as fast growth, large body, good meat quality and strong stress resistance. Its aquaculture production accounts for about 70% of the national freshwater fish aquaculture production. It is the main source of fish protein needed by the general public, and has already become the main species of freshwater aquaculture. With the continuous expansion of the breeding scale of the "Four Major Fishes", the cumbersome breeding process of the Four Great Fishes does not match the ecological conditions, resulting in slow growth, small individuals and many diseases. In particular, the gr...

AI Technical Summary

Problems solved by technology

In particular, the seedlings grow slowly and have a long growth cycle. Large-sized seedlings need to be cultivated for two years, and second-year-old large-sized seedlings are prone to diseases during the cultivation process.

The growth rate of the second-year-old large-size seedlings for commercial fish is also slow, and the feed coefficient is high.

The individual growth rate of commercial fish in one year is only 4-5 times, which not only increases the cost of breeding, but also reduces the economic benefits