Proteins and Amino Acids_1

Proteins and Amino Acids_1 - Protein Feed ingredients...

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1 Proteins and Amino Acids Protein Feed ingredients contain various proteins that are digested to provide amino acids for the animal Nutrient requirements are for amino acids, not CP Therefore, a diet which appears adequate in CP, can be deficient in one or more amino acids H 3 N-C-COO - H + R H 3 N-C-COO - H + R H 3 N-C-C-N-C-C00 - 0 || | R | R H | H | + + H 2 O H 3 N-C-C N-C-C00 - 0 || | R | R H | H | EAA vs. NEAA Essential amino acids cannot be produced or cannot be produced in sufficient quantity to meet the nutritional need of the animal. Therefore, they must be supplied in the diet. Are NEAA needed? They serve as a sources of carbon skeletons and amino nitrogen AA Classification Amino acids are classified by their R group Nonpolar, aliphatic R groups Gly, Ala, Val, Leu, Ile, Pro Polar, uncharged R groups Ser, Thr, Cys, Met, Asp, Gln Aromatic R groups Phe, Tyr, Trp Positively charged R groups Lys, Arg, His Negatively charged R groups Asp, Glu
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