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Effect of dietary energy and protein levels with varying levels of limiting amino acids on weight gain and retention of lysine methionine and cystine in broilers



Effect of dietary energy and protein levels with varying levels of limiting amino acids on weight gain and retention of lysine methionine and cystine in broilers



Indian Journal of Poultry Science 25(1): 44-51



An experiment consisting of 360 day old broiler chicks was conducted to see the influence of various levels of energy and protein containing varying of limiting amino acids on body weight gain and retention of limiting amino acids in starting (0-3 weeks), growing (3-6 weeks) and finishing (6-8 weeks) phases of growth. Studies indicated that the weight gains were significantly (P < 0.05) higher in broilers receiving 2800 Kcal ME/kg diet containing 23, 22 and 21% protein during starting, growing and finishing phases of growth respectively. Retention of amino acids was significantly higher in broilers receiving lower levels of protein and higher levels of energy in their diets. Significantly higher retention of amino acids were recorded in broilers receiving 20, 18 and 16% protein and 3200 Kcal ME/kg diet in starting, growing and finishing phases of growth respectively.

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