Studies on the Effects of Prostaglandin F2_ , Oxytocin and Gonadotropin Releasing Hormone on Libido and Semen Characteristics of Holstein Friesian Bulls
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Date
2014-03-12
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Karnataka Veterinary, Animal and Fisheries Sciences University, Bidar
Abstract
Studies were determined to establish the reaction time and seminal characteristics of Holstein Friesian bulls aged 2 to 4 years. The reaction time was recorded as 93.57 2.51 seconds. The mean semen volume, mean sperm concentration, mean initial motility,mean live sperm count, mean percentage of major sperm abnormalities, mean percentageof minor sperm abnormalities and mean percentage of post thaw motility for HF bullswas documented as 9.51 ± 0.58 ml, 801.27 ± 66.53 million per ml, 75.61 ± 0.01 percent, 75.01 ± 0.09, 4.55 ± 0.58, 9.12 ± 0.28 and 53.05 ± 0.01, respectively.
Studies were also conducted to determine whether the administration of PGF2_, oxytocin and GnRH had any significant influence on the reaction time and seminal characteristics of HF bulls. It was concluded that none of the drugs used had any significant effect either on the reaction time or on the seminal characteristics of HF bulls
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