Response of Vanaraja Breeder (Male Line) Chicks to Dietary Concentrations of Lysine and Methionine
Panda, A.K. | Rao, S.V Rama | Raju, M.V.L.N. | Reddy, M.R. | Sunder, G Shyam
The effect of dietary concentrations of lysine (Lys) and methionine (Met) on performance of Vanaraja breeder (male line) chicks was studied. Nine diets were formulated to contain 3 different concentrations of Lys (0.9, 1.0 and 1.1%) and Met (0.35, 0.40 and 0.45%) each in factorial manner. Each experimental diet was fed ad libitum to eight replicates of six chicks each during 0–6 weeks of age. Neither the concentrations of Lys and Met nor the interaction between them influenced body weight gain, feed conversion ratio, cell mediated immune response, activity of alkaline phosphatase in serum, giblet weight and weight of immune organs (spleen and bursa). However, levels of Lys in the diet significantly influenced serum concentrations of protein, activity of AST and ALT, and dressed weight. Higher concentration of protein and better dressed yield was observed in the diet containing 1.0% Lys. Dietary Met (0.4%) contents significantly influenced both feed consumption and humoral immune response (antibody titre to sheep RBC). No interaction effect was observed for any of the parameters studied except AST activity in serum and abdominal fat content of the carcass. It is concluded that Vanaraja breeder (male line) chicks require 1% lysine (Lys: CP–0.05) and 0.4% methionine (Met: CP–0.02) in diet for realizing optimum performance during 0 to 6 weeks of age.
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