Seasonal variation in seminal characteristics of West African dwarf sheep in the humid tropics
Akpokodje, J.U.; Dede, T.I.; Odili, P.I.
Acta Veterinaria Scandinavica. Supplementum 83: 110-116
1988
ISSN/ISBN: 0065-1699 PMID: 3202067 Document Number: 324364
Semen collected form six mature West African Dwarf (WAD) rams by artificial vagina twice weekly for one year, in early and late rainy season and in early and late dry season, showed no significant difference in volume of ejaculate and progresive motility of the sperm. There was significant difference in sperm concentration in total number as well as in number of motile spermatozoa and also in number of abnormal spermatozoa per ejaculate. Seasonal changes in characteristics of the semen were associated with seasonal changes in temperature indicating the detrimental effects of heat even on indigenous stock.