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Studies On The Effect Of Bovine Somatotropin Hormone (Rbst)On Milk Yield, Milk Composition And Health Of Dairy Cows, İsmai̇l Abaş, Haydar Özpinar
Studies On The Effect Of Bovine Somatotropin Hormone (Rbst)On Milk Yield, Milk Composition And Health Of Dairy Cows, İsmai̇l Abaş, Haydar Özpinar
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to investigate the influence of growth hormone (rbST)on milk yield, milk composition, animal health and sera concentration of glucose, GOT, GPT, insulin, free fat acids and blood urea of Holstein dairy cows. In this study,20 primiparous Holstein dairy cows were treated with rbST or placebo (control)in weeks 10-18 and 20-28 of lactation. In the first treatment period, the ten cows of the treatment Group A were administrated 500 mg methionyl bovine growth hormone, and the other ten cows (Group B)the same quantity of placebo.The treatment with growth hormone or placebo was switched over in …