A kind of anti-disease and growth-promoting fly maggot protein feed additive for juvenile American eels and its preparation method and application

Abstract

The invention discloses a disease-resistant and growth-promoting fly maggot protein feed additive for young American eels, a preparation method and application thereof. The feed additive includes the following raw materials by mass fraction: fly maggot protein slurry 40%-60%, pregelatinized starch 18%-25%, molasses 15%-30%, chitosan oligosaccharide 0.1%-0.5%, soybean egg Phospholipids 1% to 4%, vitamin mixture 1% to 2%, inorganic salt mixture 1.5% to 2.5%. According to the characteristics of young American eels, the present invention uses fly maggot protein as the main ingredient, is supplemented with an appropriate amount of chitosan oligosaccharide and soybean lecithin, and is supplemented with a certain proportion of pregelatinized starch, molasses, vitamin mixture and inorganic salt mixture to prepare additives. The coordination of various components can significantly improve the nutritional status of the young American eel, promote the growth of the American young eel, reduce the feed coefficient, and at the same time improve the disease resistance of the American young eel, reduce the use of drugs (antibiotics), and increase the economic benefits of breeding .

Description

technical field [0001] The invention relates to the technical field of feed additives, and more particularly relates to a disease-resistant and growth-promoting fly maggot protein feed additive for young American eels, a preparation method and application thereof. Background technique [0002] American eel (Anguilla rostrata) is one of the three major eel species cultivated in my country. The meat is tender and delicious, rich in nutrition, and has the effect of nourishing and strengthening the body. It is regarded as "water ginseng" and is one of the important agricultural products for export in my country. However, with the continuous improvement of the degree of intensive farming, the occurrence of eel diseases has become increasingly frequent, the fatality rate has increased year by year, and the annual direct economic loss is as high as 1 billion yuan. In order to control diseases, farmers have to use chemical drugs such as antibiotics. Although this method has played a...

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Problems solved by technology

[0004] In the prior art, the immune performance of American eels is generally promoted by adding immune polysaccharides or Chinese herbal medicine preparations to the feed, but there are also problems such as high cost, low content of polysaccharides in natural products, difficult separation and extraction, imperfect production technology, and quality standards. Difficult to control, complex components, difficult to determine molecular structure, etc.

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