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Reasonable Use of Amino Acid Feed Additives
Sep 01, 2017

When purchasing such additives, we should carefully observe the packing, appearance, smell and color of the products, and identify and judge the products. Products that are doubtful shall not be selected so as to avoid affecting the quality of feed and cause economic losses. Amino acid additives used for livestock feed, especially in the development of the young animal, and cattle and sheep animal due to microbial synthesis of amino acids, no restrictive amino acids and non restrictive amino acid differences, generally do not use amino acid feed additive.

Grasp the effective content and titer

Such as lysine feed additives are mostly L- lysine hydrochloride, the content is more than 98%, in fact, the content of L- lysine is about 78%, the titer can be calculated by 100%; and the titer of DL- lysine can only be calculated by 50%. Methionine feed additives are DL-, methionine, methionine analogues and N-, such as methyl methionine calcium. The effective content of DL- methionine in more than 98%, the titer was calculated by 100%; the titer of methionine analogs based according to the pure product, equal to DL- 80% and N- methionine; the methionine content of methyl methionine calcium is about 67%. Therefore, in actual application of amino acid additives, the effective content and titer should be converted to prevent excessive dosage and insufficiency.

Balance use, prevent antagonism

Amino acid balance refers to the variety and concentration of amino acids in feed, which conforms to the nutritional requirements of animals. If the amino acid in feed proportion is not reasonable, especially a high concentration of amino acids, other amino acids will influence the absorption and utilization, reduce the overall utilization of amino acids, which is also called amino acid antagonism.

The amino acids used in feed additives are generally essential amino acids, especially the first and second limiting amino acids. The use of amino acids in animals is also characterized by the fact that only the first limiting amino acids are satisfied, and that second and other limiting amino acids can be well utilized, and so on. If the first restriction amino acid can only meet the requirement of 70%, second and other restrictive amino acid content is higher, can only use 70% of its needs. Therefore, the first limiting amino acids should be considered in the application of amino acid additives in feed, and other restrictive amino acids should be considered in turn.

At present, the first and second restrictive amino acids should be considered in the formulation of feed formulas. The first limiting amino acid is lysine, and the second limiting amino acid is methionine. The first limiting amino acid in poultry is methionine, and the second limiting amino acid is lysine. Therefore, in the application of amino acid additives, should be based on the types of livestock and poultry, comprehensive, balanced consideration, do not blindly add, otherwise it may backfire, affecting production performance, and cause waste.








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