Seasonal Variations in Semen Quality of Bucks Indigenous to Saudi Arabia

High environmental temperatures are known to have an adverse effect on the fertility of both male and female goats. The main objective of this study was to examine the effect of seasonal variations in environmootal temperature on buck's semen characteristics of a local breed of goats in Saudi Arabia. Semen samples were collected from twelve adult bucks during the month of July and December using an electroejaculator. Semen were examined for its volume (Vol. ), sperms mass motility (MM), individual motility (IM), sperms density (D), the percentage of live and abnormal sperms. No significant' differences were found in smeen quality of bucks during the month of July compared to that of December. However, the density of sperms was found to be significantly higher (P < 0 .05) in the semen collected during the month of July (2.5 x 109) compared to that collected in December (1.5 x 109). These results suggest that bucks indigenous to Saudi Arabia are adapted to high environmental temperatures without any noticeable adverse effects on their apparent semen quality.