Antistress reinforcing agent for large yellow croaker

Abstract

The invention discloses an antistress reinforcing agent for large yellow croaker. The antistress reinforcing agent is prepared by uniformly mixing vitamin A, vitamin C-2- single-polyphosphate, vitamin E acetate, astragalus extract, sodium selenite, copper methionine, zinc methionine and glucose serving as raw materials. The dosage of the antistress reinforcing agent in feed is only 0.1-0.2 %, which can remarkably improve the resistance and the environmental stress resistance of the large yellow croaker on pathogenic microorganisms, so that the survival rate of the large yellow croaker in full cycle raising can be improved, the survival rate can be improved by 10 to 16 percent, the average body weight can be improved by over 20 percent, and the raising yield is improved by over 30 percent. Therefore, the invention is the antistress reinforcing agent by which the survival rate can be improved by 10 to 16 percent, the average body weight can be improved by over 20 percent, and the large yellow croaker has high fish quality.

Description

technical field [0001] The invention relates to a feed additive for large yellow croaker, in particular to an anti-stress enhancer for large yellow croaker. Background technique [0002] Under the conditions of intensive fish farming, the cultured fish are susceptible to physiological stress caused by drastic changes in environmental factors such as temperature, salinity and pH, chemical factors such as heavy metals in water, ammonia nitrogen, etc., and biological factors such as bacteria. Reaction, affecting the reproduction, growth, disease resistance and viability of fish, resulting in lower survival rate of farmed fish, slower growth rate, and lower quality of fish meat. Therefore need to develop anti-stress feed additives, to improve the survival rate of fish, promote the growth of fish, as Chinese patent application number is 200810195618.2, the name is called a kind of preparation method of fish anti-stress agent, just discloses anti-stress Stress glutamine dipeptide...

AI Technical Summary

Problems solved by technology

However, there are no reports and applications of anti-stress additives for large yellow croakers at present, so the survival rate of large yellow croakers cultured at present is low, the growth rate is slow, and the quality of fish meat is poor