Effects of prostaglandin F2α on serum testosterone, libido and sperm output in bulls.

摘要: Objective—To determine the effects of intramuscularly administration prostaglandin (PGF 2α) analog (cloprostenol) on serum testosterone, libido and sperm output in Holstein Friesian bulls kept an open housing system under tropical climates. Materials Methods—Six mature were assigned to have 2 treatments (switchback design; all bull given random sequence) i.e., control (saline injection, ml i.m.) treatment (cloprostenol injection (500 μg) i.m.). The treated with either saline or cloprostenol at 30-45 min prior semen collection. Semen volume, concentration, mass activity, pH, individual motility, morphology viability determined. duration collection examined each bull. Blood sample collected 30 after PGF 2α testosterone was determined by chemiluminescent microparticle immunoassay. Results—Duration from introducing collecting area until mounting 5.6±1.0 min. This did not differ significantly between 2a (P=0.937). Across groups, motility 8.0 ml, 1,778x10 sperm/ml, 6.8, 73.9% 72.9%, respectively. total number 13,648x10 cells per ejaculate. percentage morphologically normal spermatozoa vary (P=0.467). On average, ejaculate increased 16.7%. In out 6 bulls, up 77.7% 146.4%, Serum concentrations administration. Conclusions—It could be concluded that bulls. dramatically some had no deleterious effect qualities KKU Vet J. 2012;22(1):41-50. http://vmj.kku.ac.th/