Feed for grass carps at cultivating period for causing meat to be fresh and tender and preparation method thereof

Abstract

The invention discloses a feed for grass carps at a cultivating period and a preparation method thereof. The feed is prepared from the following components by certain ratio: fish meal, soybean meal, cottonseed meal, rapeseed meal, corn, wheat, rice bran, bran shorts, distiller's grains, soybean oil, monocalcium phosphate and grass carp premix. The method comprises the following steps: A, burdening the fish meal, the soybean meal, the cottonseed meal, the rapeseed meal, the corn, the wheat, the rice bran and the bran shorts; B, carrying out micro-grinding on the burdened raw materials; C, feeding the crushed materials into a mixer, and feeding the soybean oil, the distiller's grains, monocalcium phosphate and the grass carp premix to the mixer to mix; D, modulating the mixed materials, and adopting a dual-layer or triple-layer modulator in the modulation process, wherein the tempering vapor is saturated dry vapor; E, enabling the draw ratio of a circular mold for pelletizing to be greater than 11, wherein the aperture of the circular mold is determined according to the specifications of the grass carps; F, cooling; and G, metering and packaging. The method is feasible, and simple and convenient to operate, the digestion rate of the feed for the grass carps is increased, the feed cost is reduced, and the culture benefit is improved.

Description

technical field The present invention relates to the technical field of feed for freshwater fish breeding, more specifically to a high-efficiency and environment-friendly grass carp feed for making the meat fresh and tender, and also relates to a preparation method for the high-efficiency and environment-friendly grass carp feed for making the meat fresh and tender. The compound feed is suitable for Formulated feed for the pond culture model of grass carp in the grow-out period as the main species and mixed with crucian carp, bream, silver carp and bighead carp. Background technique Grass carp belongs to the genus Grass carp of Cyprinidae Cyprinidae, commonly known as grass carp, oil carp, grass carp, white carp, grass root (northeast), mixed seed, black herring, etc. It is the main species cultivated in freshwater ponds in my country. It is an important aquatic product and delicacies on the tables of the common people in mainland China. Grass carp generally prefer to live ...

AI Technical Summary

Problems solved by technology

Some anti-nutritional factors (trypsin inhibitors, gossypol, glucosinolates, tannins, phytic acid, histamine, etc.) and harmful substances (such as excessive aflatoxin, arsenic, lead, etc.) in the feed may cause fish body Metabolism changes and feed utilization rate reduction may also deteriorate the aquaculture water environment, thereby inhibiting the health of fish, increasing the occurrence of fish diseases, and increasing the use of aquaculture drugs

This series of changes will affect the taste and flavor of farmed grass carp. For example, the backfat of farmed grass carp is thin, the abdomen is soft and swollen, the fish meat is soft and greasy, the taste of the fish meat is poor, and there may even be peculiar smell, which may also affect the food. Safety

At the same time, the use of low-quality whole plant protein may also cause damage to the intestinal health of farmed fish, affecting animal feeding and nutrient absorption and utilization

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