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Protein synthesis in vivo in muscles of the growing lamb]
Authors:M Ferrara  M Arnal  G Fauconneau
Abstract:The relationship between incorporation of intravenously injected 14C lysine and specific radio-activity of precursor was used to estimate protein synthesis in muscle of growing lambs. The rate of protein synthesis per unit of muscle weight in Supraspinatus and Extensor digitorum longus decreased strongly from one week of age to puberty (10 weeks); afterwards it decreased in supraspinatus and increased slightly in Extensor digitorum longus. The rate of protein synthesis increase in muscle protein weight was constant during the whole experiment (1 week-16 weeks). In preruminant Lambs )1 week-5 weeks) the rate of protein synthesis per unit of muscle weight decreased; however, due to the increase in muscle weight, the rate of protein synthesis in whole muscle remained relatively constant. In order Lambs the rate of protein synthesis in whole muscle decreased. The turnover time of protein increased with age. These results give some explanation on muscular development of Lambs.
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