Cage culture method of channel catfish adults

Abstract

Feed for channel catfish adults comprises, by weight, 2-4 parts of Bacillus subtilis powder, 1-4 parts of ferment bacteria, 0.5-0.9 part of solid photosynthetic bacteria, 0.8-1.2 parts of bdellovibrio bacteriovorus, 0.2-0.6 part of vitamin additive, 10-16 parts of mineral additive, 0.2-0.4 part of chelating agent, 60-80 parts of water hyacinth, 50-80 parts of edible fungi residue, 100-110 parts of distillers' grains, 40-60 parts of fishbone meal, 70-80 parts of rice bran, 10-16 parts of brown sugar, 45-55 parts of kongpo monkshood root, 40-50 parts of Cochinchina Momordica seed, 1-15 parts of Chinese stellera root and the like. Comparisons show that compound microorganism feed with the feed can help channel catfish adults to grow fast, with higher EPA content and less fish diseases, less fishes die of illness, the beneficial microorganisms in water can be more, and final quality is higher.

Description

technical field [0001] The invention relates to a method for aquaculture, in particular to a method for cultivating channel catfish adult fish in net cages. Background technique [0002] Channel catfish, also known as channel catfish and river catfish, is native to the Mississippi River in the United States and is the main freshwater farmed fish in the United States. Channel catfish are relatively large in size. Under artificial breeding conditions, the fish fry can grow into fish species with a body length of 14-20 cm and a weight of 0. 03-0. 10 kg in the first year. Reach 0. 8~ 1. 5kg. The front part of the fish is wider than the back part, the head is smaller, the snout is slightly pointed, the mouth is subterminal, and the upper and lower jaws have small and dense fine teeth. The body surface is smooth without scales, the mucus is abundant, the lateral line is complete, and there are obvious lateral line holes in the skin. There are 4 pairs of dark gray barbels on the...

AI Technical Summary

Problems solved by technology

With the rapid expansion of the scale of channel catfish industrialization, the output per unit area of ​​intensive cages gradually increased, the environment of the breeding waters gradually deteriorated, and the farming techniques were not standardized, which led to an increasing number of channel catfish diseases and deaths caused by bacterial outbreaks Occurs from time to time, causing great economic losses to industrialized farming

Existing single-type fish fertilizers and compound-type fish fertilizers also have a common shortcoming, that is, they cannot kill harmful bacteria and insects, so they lack the effect of effectively preventing and controlling fish diseases

The microbial compound fish fertilizer can increase the content of beneficial bacteria in fish ponds and effectively reduce the occurrence of fish diseases. At present, there is no report on the special use of this compound microbial fish fertilizer

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