Disease-resisting and growth-promoting feed additive premix for marine fishes

Abstract

The invention relates to a disease-resisting and growth-promoting feed additive premix for marine fishes. The premix is prepared from the following raw materials in percentage by weight based on each ton of feed additives: 1,000 to 2,000g of 50 percent of microcapsule DL-methionine, 1,000 to 2,000g of 50 percent of microcapsule lysine hydrochloride, 800 to 1,500g of crystal taurine, 150 to 500g of 93 percent of enveloped vitamin C, 100 to 800g of 500,000 IU / g vitamin E acetic ester, 50 to 150g of 1 permillage of yeast selenium, 30 to 100g of antioxidant and 1,000 to 5,000g of 80-mesh attapulgite. The disease-resistant growth-promoting feed additive premix for the marine fishes can meet the requirements of resisting diseases and promoting growth when various marine fishes are cultivated at high density, has safety and high efficiency when used for a long time, and does not have toxic or side effect; after the various marine fishes ingest feeds with the premix for over 1 month, the serum lysozyme activity, phagocytic capacity of macrophages and serum complement activity can be obviously improved, and the survival rate of a plurality of marine fishes infected by seawater vibro harveyi can be improved at the same time; and the survival rate of cultivated marine fishes is high, the body colors of the marine fishes are bright, the anti-excitability ability of the marine fishes is high, and the feed coefficient is low.

Description

technical field [0001] The invention relates to a feed additive, in particular to a premix feed additive for disease resistance and growth promotion of seawater fish. Background technique [0002] China is the world's largest aquaculture country and aquatic product trade country, and it is also the only country in the world where aquaculture output exceeds fishing output. The output of aquaculture aquatic products accounts for 70% of the world, and the export value of aquatic products ranks first in the world for 6 consecutive years and 8 consecutive years. It ranks first in the export of bulk agricultural products in my country, and aquaculture occupies a very important position in the national economy. In recent years, my country's aquaculture industry has developed vigorously, especially the fourth wave of aquaculture represented by marine fish farming is in the ascendant. However, the current international and domestic research on nutrition and immunology of marine fish ...

AI Technical Summary

Problems solved by technology

However, the current international and domestic research on nutrition and immunology of marine fish is still insufficient, coupled with various disadvantages of high-density and intensive marine fish farming methods, resulting in the carrying capacity of the cultured water body greatly exceeding its natural carrying capacity. This causes the immune function and anti-stress ability of seawater fish to decline, and the mortality rate remains high during the breeding process; the growth rate of the cultured species is slow, and the commercial specifications cannot be reached within the normal breeding cycle

This situation has seriously hindered the further development of marine fish farming industry