Amino acid feed additive use specification
Choose reliable products
Amino Acid additives are important because of their high cost and are currently imported. Therefore, they should be used with caution to prevent counterfeiting. In general, the production process of imported products is more advanced and the quality is more reliable. Such as Japan's Concord, Ajinoin lysine additives; Japan's Cao Da, Germany's Di Gaosha, France's Rhone Prolene and other methionine additives.
When purchasing such additives, carefully observe the packaging, appearance, smell, color, etc. of the product, and identify and judge. Do not use products that are suspected, so as not to affect the quality of the feed and cause economic losses. Amino acid additives are mostly used in livestock feed, especially in the young development stage of animals, while cattle, sheep and other anti-animal animals can use microorganisms to synthesize various Amino Acids, and there is no difference between limiting amino acids and non-limiting amino acids. Use amino acid feed additives. The utilization rate of chemically synthesized amino acids in aquatic animals is still controversial. Some studies and experiments have reported that the chemically synthesized amino acids are not highly utilized in fish. Therefore, it is better to use such additives with caution in aquaculture-based compound feeds.
Balanced use to prevent antagonism
Amino acid balance means that the variety and concentration of amino acids in the feed meet the nutritional needs of the animal. If the proportion of amino acids in the feed is unreasonable, especially if the concentration of one amino acid is too high, it will affect the absorption and utilization of other amino acids, and the overall utilization of amino acids will be reduced. This is also called the antagonism of amino acids.
The amino acids used in feed additives are generally essential amino acids, particularly the first and second limiting amino acids. Animals also have a property of amino acid utilization, that is, only the first limiting amino acid is satisfied, the second and other limiting amino acids can be better utilized, and so on. If the first limiting amino acid can only meet 70% of the required amount, and the second and other limiting amino acids are higher, only 70% of the required amount can be utilized. Therefore, in the application of amino acid additives in feed, the first limiting amino acid should be considered first, followed by other limiting amino acids.
The first and second limiting amino acids are currently considered primarily in the formulation of feed formulations. The first limiting amino acid of the pig is lysine, the second limiting amino acid is methionine; and the first limiting amino acid of the bird such as chicken is methionine, and the second limiting amino acid is lysine. Therefore, when applying amino acid additives, it should be considered comprehensively and balanced according to the type of livestock and poultry, and should not be added blindly, otherwise it may be counterproductive, affecting production performance and causing waste.
Master effective content and potency
For example, the lysine feed additive is mostly L-lysine hydrochloride, the content is 98% or more, and the actual L-lysine is about 78%, the titer can be calculated as 100%; and the DL-lysine The potency can only be calculated at 50%. The methionine feed additives are DL-methionine, methionine-based analogs, and N-methyl-methionine calcium. The effective content of DL-methionine is more than 98%, and the titer is calculated by 100%; the titer of methionine by base analog is 80% of DL-methionine; and the methionine content of N-methylmethionine calcium is 67% or so. Therefore, in the actual application of amino acid additives, the effective content and potency should be converted first to prevent excessive and insufficient addition.
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