L-lysine chemical name is L-2, 6-diaminoacetic acid, molecular formula: C5H14N2O2?HCL white crystal. Lysine is often the first or second limiting essential amino acid due to its high nutritional requirements and its low content in many feed ingredients.
The content of lysine in cereal feed is not high, although the content of legume feed is high, soybean cake or soybean meal as the feed material of chicken is a by-product after processing, and lysine may reduce the activity when it is heated or stored for a long time. Although there are many lysines in animal feed, such as fishmeal, there are similar problems of inactivation. Therefore, the lysine that can be used in the feed is only about 80% of the value obtained by chemical analysis. There is still antagonism between arginine and lysine nutrition. The lysine is often added to the feed of the broiler chicken to make it have a higher content, which can easily lead to a decrease in the utilization of arginine, so it is necessary to make up for arginine at the same time.
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