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Amino acids in feed
Posted by Md. Osman Sheikh on November 8, 2024 at 3:04 amWhat are the essential amino acids in feed?
Chemist. Ashfaq Ahmad replied 1 year, 5 months ago 19 Members · 33 Replies -
33 Replies
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The essential Amino acids TIM VAN HALL as given acronym formed by selecting the first latter of the AA name.
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Essential AA = Indispensable AA = those AA which are not synthesized at all in the body or synthesized but not sufficient to meet the requirement
Non essential AA = Dispensable AA
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According to the nutritional definition, dietary essential amino acids are those that the animal cannot produce at a rate fast enough to sustain optimal growth. The only amino acid that cannot be produced in the body via transamination are lysine and threonine and one of the reasons why lysine is the amino acid used as the basis of the ideal protein concept because its fate is only to be incorporated into protein or be catabolized to ketogenic precursors. Most other amino acids can be produced via transamination. All amino acids are incorporated into proteins in the L configuration. Thus, all amino acids supplemented in diets are L-amino acids. One noticeable exception is methionine, for which the transamination rate is so great that D-methionine and methionine hydroxy analog products can be included in the diets of chickens with no problem. The essentiality of dietary amino acids will depend on the animal species and the physiological state (growing, mature, laying, lactating, gestating, etc.). For poultry, dietary essential amino commonly supplemented in diets include methionine, lysine, threonine, isoleucine, and valine. The other dietary essential amino acids like tryptophan, arginine, histidine, leucine, and phenylalanine are normally present in sufficient quantities in feedstuffs and its supplementation is usually not needed. Glycine and serine can be conditional essential in poultry particularly in low crude protein diets.
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According to the nutritional definition, dietary essential amino acids are those that the animal cannot produce at a rate fast enough to sustain optimal growth. The only amino acid that cannot be produced in the body via transamination are lysine and threonine and one of the reasons why lysine is the amino acid used as the basis of the ideal protein concept because its fate is only to be incorporated into protein or be catabolized to ketogenic precursors. Most other amino acids can be produced via transamination. All amino acids are incorporated into proteins in the L configuration. Thus, all amino acids supplemented in diets are L-amino acids. One noticeable exception is methionine, for which the transamination rate is so great that D-methionine and methionine hydroxy analog products can be included in the diets of chickens with no problem. The essentiality of dietary amino acids will depend on the animal species and the physiological state (growing, mature, laying, lactating, gestating, etc.). For poultry, dietary essential amino commonly supplemented in diets include methionine, lysine, threonine, isoleucine, and valine. The other dietary essential amino acids like tryptophan, arginine, histidine, leucine, and phenylalanine are normally present in sufficient quantities in feedstuffs and its supplementation is usually not needed. Glycine and serine can be conditional essential in poultry particularly in low crude protein diets.
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