Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2006.353.356MainaV.A. S.U.R . Chaudhari G.D. Mshelia A. Williams 2200662The 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.]]>Spedding, C.R.W.,1983109393Osuagwuh, A.I.A. and I.U. Akpokodje,19811303309Zemjanis, R.,19702nd Edn.,pp: 139-156pp: 139-156Ball, L., L.D. Nelson, J.W. Furman and G.E. Seidel,19741974Brito, L.F.C., A.E.D.F. Silva, L.H. Rodrigues, F.V. Vieira, L.A.G. Deragon and J.P. Kastelic,200270181190Kumi-Diaka, J., V. Nagaratnam and J.S. Rwuaan,19811081315Ahmad, N. and D.E. Noakes,1996152225236Akusu, M.O., E.A. Agiana and G.N. Egbunike,19841984pp: 50.150.3Moss, J.A., D.R. Meltose and M. Vandeplassche,19793rd Edn.,pp: 59-91pp: 59-91Bearden, H.J. and J.W. Fuquay,19923rd Edn.,pp: 163-176pp: 163-176Ogebe, P.O., B.K. Ogunmodede and L.R. McDowell,199622213217Devendra, C. and G.B. Mcleroy,1982pp: 26-27pp: 26-27Osinowo, O.A., V. Buvanendran and W.L. Koning,19881988Corteel, J.M.,19811981pp: 171-191pp: 171-191Roca, J.,1989pp: 195-200pp: 195-200Karagiannidis, A., S. Varsakeli and G. Karatzas,20005312851293