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Effects of a somatotropin challenge on serum IGF-I concentrations and short-term milk production response in dairy cows



Effects of a somatotropin challenge on serum IGF-I concentrations and short-term milk production response in dairy cows



Canadian Journal of Animal Science 71(3): 683-693



The correlation between increases in serum insulin-like growth factor-I (IGF-I) concn. and milk production in response to a single injection of bovine somatotropin (GH) was evaluated. Four cows and 4 doses of GH (0.45, 112 and 280 mU/kg) were used in a Latin-square design in 4 consecutive wk. Blood samples were collected 60, 30 and 5 min prior to treatment, and then at 12-h intervals for 72 h.

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Accession: 002089312

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