Responses of skeletal muscle protein synthesis and breakdown to levels of dietary protein and fat during growth in weaning rats.


Skeletal muscle growth, muscle nucleic acids, and muscle protein synthesis and breakdown were measured to evaluate the protein requirement of weanling rats. Male Sprague-Dawley rats were fed purified diets that differed in protein and energy contents. Diets ranged from 5 to 30% casein, 5 to 15% corn oil, and all were methionine fortified. All diets were… (More)


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