Reproductive performance of female breeder turkeys fed on maize‐soyabean diets supplemented with methionine

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Abstract
1. Supplemental methionine (MET) did not improve the reproductive performance of Medium White female breeder turkeys fed on maize‐soyabean diets of equal energy content, containing 100, 120 or 140 g crude protein (CP)/kg. 2. Egg production was significantly improved by feeding diets containing 120 or 140 g GP/kg compared with 100 g/kg, and egg weight was significantly improved by feeding 140 g CP/kg compared with 120 g/kg. 3. These results indicate that an amino acid(s) other than MET was limiting in diets from which hens obtained 16 g CP, 0.3 g MET and 0.6 g total sulphur amino acids (TSAA)/bird d, and that MET was not limiting at 24 g CP, 0.4 g MET and 0.8 g TSAA/bird d.