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Kansas Agricultural Experiment Station Research Reports
1990; Kansas Agricultural Experiment Station contribution; no. 91-148-S; Report of progress (Kansas Agricultural Experiment Station); 608; Dairy; Parturition and recombination; Somatotropin (rBST); Metabolic profile
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Effect Of Parturition And Recombination Bovine Somatotropin (Rbst) On The Metabolic Profile Of Dairy Cows (1990), J.M. Estrada, John E. Shirley
Effect Of Parturition And Recombination Bovine Somatotropin (Rbst) On The Metabolic Profile Of Dairy Cows (1990), J.M. Estrada, John E. Shirley
Kansas Agricultural Experiment Station Research Reports
Summary Blood samples were collected from 16 Holstein cows around parturition to obtain baseline values of various hormones and metabolites. At 90 ± 3 days postcalving, cows were divided into two groups (8 cows/group) and injected with either saline (control) or 25 mg rBST/d for 28 consecutive days. Blood was sampled on days 0, 1, 5, 10, 15, 30, and 45 after the beginning of treatment and analyzed for insulin, glucagon, growth hormone, glucose, and blood urea nitrogen (BUN). Milk production and composition were recorded as well as body weights and condition scores. Cows receiving rBST had higher milk yields …