Feed additive for improving anti-stress capability of large yellow croakers

Abstract

The invention aims to provide a feed additive for improving the anti-stress capability of large yellow croakers. The feed additive comprises procyanidine and a vitamin C additive, wherein the mass ratio of procyanidine and the vitamin C additive is preferably (0.5-2):1. The additive amount of procyanidine in the anti-stress additive of large yellow croakers is 100-300mg / kg, and the additive amount of vitamin C phosphate is 500-600mg / kg. The procyanidine and the vitamin C additive combined in the proportion can be used for improving the anti-stress capability and anti-trawling stress capability of the large yellow croakers and does not generate obvious side effects on livers of large yellow croakers.

Description

technical field [0001] The invention belongs to the technical field of aquatic feed preparation, and in particular relates to a feed additive for improving the anti-stress ability of large yellow croaker. technical background [0002] Large yellow croaker is the marine fish with the largest cage culture output in my country. In 2013, the total national output reached 105,000 tons. At present, the farming of large yellow croaker is still mainly fed with chilled fish, but the popularity rate of compound feed has reached 20%. Especially in recent years, the nutrition research of large yellow croaker has been systematically deepened, the special compound feed for large yellow croaker has been successfully developed and put into the market, and the use of compound feed has been more and more recognized by the market. Coupled with the unstable source of chilled fish, large price fluctuations, inconvenient use, easy corruption and breeding of diseases, waste of resources, and dama...

AI Technical Summary

Problems solved by technology

Coupled with the unstable source of chilled fish, large price fluctuations, inconvenient use, easy corruption and breeding of diseases, waste of resources, and damage to the environment have become increasingly prominent. The demand for compound feed is gradually increasing. Compound feed is used in large yellow croaker farming. The popularity rate will accelerate

[0003] A common problem encountered in the production of large yellow croaker is that due to the high water temperature in summer and the influence of typhoons from time to time, as well as operations such as dividing fish and changing nets during the breeding process, trawling stress will occur, which makes cage farming a lot If the yellow croaker is in a state of stress, it will lead to the occurrence of unfavorable situations such as reduced feed utilization, disease proneness, increased mortality and slowed growth

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