Low-protein feed for young nile tilapia

Abstract

The invention discloses a low-protein feed for young nile tilapia. The invention discloses a low-protein feed for young nile tilapia, and the feed is prepared, in percentage by mass, from 0.4% of NCG,10%-11.2% of tapioca flour, 1.9%-2.2% of fish meal, 4.7%-5.5% of soybean meal, 9.8%-10.5% of rapeseed meal, 5.5%-6.2% of cottonseed meal, 22%-22.6% of rice bran meal, 8.8%-10.2% of DDGS, 30%-30.4% offlour, 1.1% of soybean oil, 0.5% of soybean lecithin, 0.1% of composite vitamin, 0.4% of composite mineral salt and 1.5%-1.6% of monocalcium phosphate. The components and proportion of the feed disclosed by the invention are designed on the basis of digestible protein and energy utilization rate of young tilapia mossambica on the components; a proper amount of NCG is added into the feed; in actual measurement, compared with a published feed formula, the amino acid content of each component in the blood of young tilapia mossambica is not obviously reduced, and meanwhile, the use amount of fishmeal and soybean meal is reduced, so that the protein content and the cost in the feed are reduced to a certain extent, the protein content is reduced by 2.8% or above, and the cost of the feed is reduced by 15% or above.

Description

technical field [0001] The invention belongs to the technical field of fish feed, in particular to a low-protein feed for juvenile Nile tilapia. Background technique [0002] Nile tilapia is one of the main cultured species in southern China (Guangdong, Hainan, Guangxi, Fujian). Yang Hong et al. found that about 5g of Nile tilapia can meet the growth needs of Nile tilapia juveniles when the fat content is about 9% and the feed protein level is 25%. Fish's demand for protein is actually the need for essential amino acids. Adding an appropriate amount of essential amino acids can reduce the amount of protein raw materials and the impact of nitrogen excretion, improve feed utilization, reduce feed costs, and will not affect growth after reducing protein levels performance. [0003] NCG is the abbreviation of N-Carbamylglutamate, the Chinese name is: N-carbamylglutamate; it is a structural analogue of N-acetylglutamate (NAG), which can act as a catalyst like NAG in animals to ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of how much NCG to add can satisfy the essential amino acid amount required for the daily growth of Nile tilapia juveniles, and how to match other feed components to meet other nutritional needs economically and efficiently; comprehensively consider amino acid Balanced, providing a low protein feed for Nile tilapia juveniles

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