In general, only weak correlations were found between behavioural traits of the bulls and quality of their semen. The coefficients of correlation between the bull s response to a handler and to other bulls averaged 0.73. The age and breed of the bulls had a statistically significant effect on semen quality, scrotal circumference and the animals response to an unfamiliar human (Plt,0.05, Plt,0.01. Analysis was made of the response of bulls to humans and other bulls, facial hair whorl position and length, scrotal circumference, and semen characteristics (mean ejaculate volume, mean sperm concentration, and sperm wave motion. A total of 76 breeding bulls of the Holstein-Friesian and dual-purpose Simmental breeds were investigated. © 2016 Blackwell Verlag GmbH.Įffect of behaviour of Holstein Friesian and Simmental bulls on semen qualityĭirectory of Open Access Journals (Sweden)įull Text Available The aim of the study was to determine the relationship between the behaviour of Holstein-Friesian and Simmental bulls and the quality of their semen. In conclusion, the addition of 2.0 mm l-cysteine in extender improved the antioxidant enzymes profile, post-thaw quality and in vivo fertility of Nili-Ravi buffalo bull spermatozoa. Post-thaw total motility (%), progressive motility (%), rapid velocity (%), average path velocity (μm s -1 ), straight line velocity (μm s -1 ), curvilinear velocity (μm s -1 ), beat cross frequency (Hz), viable spermatozoa with intact plasmalemma (%), acrosome and DNA integrity (%) were higher with the addition of 2.0 mm l-cysteine as compared to other groups (P l-cysteine than in the control.
The antioxidative enzymes were significantly higher (P l-cysteine as compared to other groups. Semen samples from 4 buffalo bulls were diluted in Tris-citric acid-based extender having different concentrations of l-cysteine (0.0, 0.5, 1.0, 2.0 and 3.0 mm) and frozen in 0.5-ml French straws. The effects of l-cysteine in extender on antioxidant enzymes profile during cryopreservation, post-thaw quality parameters and in vivo fertility of Nili-Ravi buffalo bull spermatozoa were studied. Iqbal, S Riaz, A Andrabi, S M H Shahzad, Q Durrani, A Z Ahmad, N L-Cysteine improves antioxidant enzyme activity, post-thaw quality and fertility of Nili-Ravi buffalo (Bubalus bubalis) bull spermatozoa.
These results show that seminal plasma Ca and Mg content and TAC are associated with semen The associations in groups are discussed. The mean progressive motility in Ex group was 92.24 ± 0.51%, in Go group it was 81.66 ± 0.62 %, and in Mo group it was 71.66 ± 1.05 %. Few spermatozoa (800 million sperm/mL and Group II 90% motile, n = 33, good (Go, 80-89% motile, n = 15 and moderate (Mo, <79% motile, n = 6 according to their percentage of sperm motility. Whereas semen quality (including sperm output, pH and initial sperm motility did not differ between the seasons. Sperm concentration ranged from 1.1 to 1.2 billion/mL, being also affected by bull age. Results show that among all physical semen characteristics, only ejaculate semen volume was significantly (P65% and >70%, respectively. Semen was evaluated for physical semen characteristics including, percentages of sperm motility, live sperm and sperm abnormality as well as sperm cell concentration pre-and post-filtration. Immediately after collection, semen was extended (37degree C) and filtered using sephadex column-filtration technique. Semen was collected biweekly from each eight weeks. To evaluate the effect of sephadex column filtration technique on semen quality of five Holstein bulls and five Egyptian buffalo bulls. International Nuclear Information System (INIS)ĪbdelKhalek, A E AboulEla, M B Soheir, A Fawzy Dandooush E Semen Quality of Holstein and Buffalo Bulls after Filtration using Sephadex Column
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