Preparation method of feed capable of reducing death rate of grass carp

Abstract

The invention discloses a preparation method of a feed capable of reducing a death rate of grass carps. The feed belongs to the field of fish feeds and is prepared from following raw materials including: soybean meal, rapeseed meal, cottonseed meal, rice bran, a grain stillage protein feed, monocalcium phosphate, fish-use composite vitamins, composite minerals, organic chromium, choline, corn gluten meal, flour, imported fish meal, Chinese herbal medicine additives, composite enzymes, microbial preparations and an immune polysaccharides composite package. A finished product of the feed is prepared by boiling the Chinese herbal medicine additives, crushing the raw materials, carrying out a blending process and performing a granulating process. According to an experimantal result, a growth speed of the grass carps fed by the feed can be increased by 20-30%. Flesh quality of the grass carps is obviously improved and shapes of the grass carps are obviously better. In addition, the feed enables the grass carps to be strong in anti-diseases capability and is high in safety.

Description

technical field [0001] The invention belongs to the field of fish feed processing, and in particular relates to a preparation method of feed for reducing grass carp mortality. Background technique [0002] Grass carp is the main member of the four major family carps in my country, belonging to the genus Grass Carp of the family Cyprinidae, Cyprinidae, and commonly known as Hunzi. Grass carp feeds on grass. The color of the back is dark brown, the edges of the scales are dark brown, the pectoral and pelvic fins are grayish yellow, and the side line is straight. They generally like to inhabit the middle and lower layers of rivers, lakes and other waters and areas with many aquatic plants near the shore. It has the habit of migrating in rivers and lakes, and overwinters in the main stream or in the deep water of lakes in winter. Grass carp is lively, swims quickly, often forages in groups, and is voracious. It is a typical herbivorous fish. Grass carp feeds on zooplankton in t...

AI Technical Summary

Problems solved by technology

With the widening of the breeding range, the increase of the breeding density and the deterioration of the breeding environment, the grass carp breeding diseases have developed from the traditional "old three diseases" red skin, gill rot, enteritis, etc. to the "new three diseases" of grass carp, namely bacterial Complications, viral hemorrhagic disease, hepatobiliary syndrome, etc., the "three new diseases" of grass carp have brought great harm to aquaculture production, and caused a large number of grass carp deaths after the onset. The normal production is of great significance, and the prevention and control measures are mainly medication, but in the breeding process, the high cost of medication has become a headache for farmers, especially between the first-year-old fish and the second-year-old fish, the survival rate of grass carp is only 40%-60% %, in response to this situation, the company launched a special feed to reduce the mortality of grass carp