Amino acid additives are used in feed to balance or supplement a particular production purpose of the required nutrients. The main amino acids added in the feed are: lysine, tryptophan, methionine, threonine these limiting amino acids. Amino acids are the basic building blocks of proteins. The essence of protein nutrition is amino acid nutrition. The core of amino acid nutrition is the balance between amino acids.
The balance of amino acids in natural feed is very poor. Almost all of them are not balanced. The animal body in the limited feed can not synthesize themselves.
They can only rely on eating intake of amino acids. The amino acid content of natural feed is very different, each is not the same, because of different kinds, different ratio of natural feed composed of full price compound feed, although try to mix according to the principle of amino acid balance, but their various amino acid content and the proportion between amino acid is still variable, various. Therefore, amino acid additives are needed to balance or supplement the requirements for a particular production purpose.
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Barley seed production
The pro-shellfish selection and stocking of green barley are abundant in the north coast of China. The breeding season is in the northern part of the country from late July to early September. During the breeding season, natural or artificially cultivated 2nd-instar shellfish are harvested. Individuals with selective gland maturation and integrity without injury are washed clean and stored indoors for a period of time, allowing them to excrete feces and sediment and promote ripening, as the pro-shellfish for artificial hatching.