Abstract:<p>The aim of this study was to evaluate the methionine plus cystine levels in the diets of laying hens during the rearing period (13-18 weeks old). The diets included a control diet formulated according to NRC and five other diets with different levels of this digestible methionine plus cystine (0.317, 0.356, 0.396, 0.436 and 0.475%) that have been based on the recommendations of the Brazilian poultry and swine tables. Performance, serological and histological variables were evaluated. There was linear … Show more
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