Method for establishing giant freshwater prawn ideal protein mode

Abstract

The invention relates to a method for establishing a giant freshwater prawn ideal protein mode. The suitable needed amount of each kind of EAA in the fodder in the method is calculated according the following formula: the required amount of each kind of EAA (g16g - 1N) = EAA contrast * (2 - DEL - (NR test / NR contrast)), wherein according to the EAA contrast, the content corresponding to the EAA in the fodder is contrasted; according to the DEL, the deduction rate corresponding to the EAA in group fodder is tested; according to the NR test, the nitrogen deposition (mg gMBW - 1day - 1) of group prawns is contrasted. The method for establishing the giant freshwater prawn ideal protein mode overcomes the defect that in the past, a feed formula can not guarantee the balance of all amino acids, particularly the ten kinds of necessary amino acids, so that the nutritive value of fodder protein is influenced and the cost is high. The method fills the blank related to the ideal protein mode in the nutrient requirement parameters of the giant freshwater prawns, the proportional relation of the ten kinds of necessary amino acids is determined, and low protein high-efficiency environment-friendly giant freshwater prawn compound fodder which is balance in amino acid, high in bioavailability and obvious in price advantage is prepared.

Description

technical field [0001] The invention mainly relates to the subject of aquatic animal nutrition and feed, in particular to the establishment of an ideal protein model of Macrobrachium rosenbergii. Background technique [0002] Protein is the most important nutrient for aquatic animals to obtain energy, promote growth, and regulate body metabolism. Animals use feed protein mainly through a series of digestive processes in the body to degrade protein into small peptides and amino acids (AA), and then absorb and utilize it. Therefore, protein nutrition is essentially amino acid nutrition. There are 20 kinds of amino acids that make up protein, 10 of which cannot be synthesized in the body of aquatic animals and must be provided by feed or bait, called essential amino acids (EAA); other amino acids can be synthesized in animals and are not easily lacked, called Non-essential amino acids (NEAA). According to the theory of protein nutrition, the level of feed protein is appropria...

AI Technical Summary

Problems solved by technology

[0004] Before the present invention, people only mastered the index parameters of Macrobrachium rosenbergii lysine and sulfur-containing amino acids, and the demand parameters for the other 8 kinds of essential amino acids have not been determined, which makes it difficult to ensure all amino acids, especially the 10 kinds of essential amino acids when designing feed formulations. In addition, in the actual breeding production, giant macrobrachium rosenbergii feed manufacturers often prepare feed with high protein level and use a large amount of imported fishmeal, which leads to high feed prices for macrobrach rosenbergii, and farmers' farming Increased costs, reduced benefits

At the same time, excessive feed protein will also increase the excretion of nitrogen from the shrimp body, resulting in eutrophication of the aquaculture water, affecting the growth of shrimp and the ecology of the water area

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