The overall lambing, multiple birth and fecundity rates recorded in this study (Table 1) are comparable to results obtained by Zeleke et al. (2005) in Dorper ewes. Lambing rate in the treated ewes was 75.6%. This is similar to 80% reported by Zarkawi et al. (1999), higher than 64.3% (Alkass et al., 1989) and lower than 90% reported by Crosby and O’Callaghan (1991) in ewes fitted with intravaginal sponges followed by PMSG injection.