Influence of Season on Semen Characteristics of Sahel Bucks in Borno State
S.U.R . Chaudhari,
The semen characteristics of Sahel bucks was investigated over a one year period to determine the influence of season on the ejaculate mass activity, motility, sperm concentration, percent live spermatozoa. These variables were significantly higher in the dry season than in the rainy season. Total spermatozoa per ejaculate averaged 4.74±0.99×109 mL-1 and 3.75±0.99×109 mL-1 for the dry and rainy seasons, respectively. Corresponding proportions of total morphologically defective spermatozoa per ejaculate were 6.48±1.13% and 17.69±1.13%. Percent live spermatozoa were 87.5±0.75 and 64.1±0.75%, while the corresponding sperm concentration were 3.73×109 mL-1 and 2.67×109 mL-1 for the dry and rainy season, respectively. All differences were statistically significant (p<0.05). Ejaculate quality was better during the dry season. Consequently semen collected and frozen during the dry season may produce higher fertility rates in an Artificial Insemination programme.
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