Abstract
Control of estrus is essential for the efficiency of any breeding program in farm animals, artificial insemination, hand mating and prediction of parturition dates. The present study is providing new evidence about determination of silent estrus in Damascus does. Since many D. does do not show any interest toward the male across seasons compared with spontaneous estrus detected by buck goat (BG). Results revealed that estrus detected by BG has significantly higher in autumn (78 of 86) than spring (3 of 11), while estrus detected by frequent vaginal inspection (FVI) was higher in spring (8 of 11) than autumn (8 of 86). Normal estrous cycles (EC) is significantly higher in D. does detected by BG than by FVI, while short and long EC are higher in D. does detected by FVI than by BG. Moreover, biochemical and hormonal analysis revealed that BG is an effective tool to measure estrus's quality especially in autumn and winter.
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