Grass carp feed capable of balancing amino acids and reducing antinutritional factors and preparation method of grass carp feed

Abstract

The invention discloses a grass carp feed capable of balancing amino acids and reducing antinutritional factors and a preparation method thereof.The protein source of the grass carp feed comprises soybean meal and mixed vegetable protein raw materials, the mixed vegetable protein raw materials comprise rapeseed meal, sunflower kernel meal, corn protein powder and palm kernel meal, the mass ratio of the soybean meal to the mixed vegetable protein raw materials is (20-35): (30-50), and the mass ratio of the rapeseed meal to the mixed vegetable protein raw materials is (20-35): (30-50). The mass ratio of the rapeseed meal to the sunflower kernel meal to the corn protein powder to the palm kernel meal is (4-5): (3-4): (1-2): (1-1.5). By reasonably matching and mixing the vegetable protein raw materials including the rapeseed meal, the sunflower kernel meal, the corn protein powder and the palm kernel meal, the content of crude protein is appropriate, essential amino acids of the feed are balanced, the content of antinutritional factors is low, and the use amount of the vegetable protein raw materials can be increased, so that the use amount of soybean meal in the grass carp feed is reduced, and the feed cost is reduced. As a soybean meal protein partial substitute feed, the feed has good development and application prospects, resources are saved, and the condition that grass carp feed contends for food with people is reduced.

Description

technical field [0001] The invention belongs to the technical field of fish feed, and in particular relates to a grass carp feed which balances amino acids and reduces anti-nutritional factors and a preparation method thereof. Background technique [0002] Grass carp is one of the famous "four major fishes" in my country. It has the advantages of fast growth and high yield. It is an important freshwater economic breeding object and is very popular among consumers. Grass carp is a typical herbivorous fish. In large-scale and high-density grass carp farming, the protein content of small grass carp can reach 30%, and the protein content of large grass carp feed is generally 26-28%. Common high-quality protein raw materials include fish meal and soybean meal. Fish meal has the highest crude protein content, but the price is also the highest, so it is hardly used in commercial grass carp feed; soybean meal has a high crude protein content, 43-48%, and is widely used. Most of the ...

AI Technical Summary

Problems solved by technology

Common high-quality protein raw materials include fish meal and soybean meal. Fish meal has the highest crude protein content, but the price is also the highest, so it is hardly used in commercial grass carp feed; soybean meal has a high crude protein content, 43-48%, and is widely used. Most of the feed sources for raising animals, but my country's soybean meal mainly relies on imports, and is most affected by the international market. The crude protein content of sunflower seed meal and rapeseed meal is generally 33-37%, but sunflower seed meal contains chlorophyllic acid, and rapeseed meal contains Anti-nutritional factors such as tannin, phytic acid, and sinaprin. Corn gluten powder often has high mycotoxins, especially aflatoxin. Palm kernel meal contains a lot of mannan. Excessive use of a single raw material will cause anti-nutritional substances or toxins Exceeding the standard, the imbalance of essential amino acids will affect the growth of grass carp, so the amount of these raw materials in fish feed is generally controlled below 20%

Images