Effect of Combined or Separate Administration of Beta Carotene-Vitamin E and hCG on Fertility in Sheep Lambs

This study was performed to investigate the effect of beta carotene-vitamin E and hCG treatments alone or a combination both on fertility in estrus syncronized Awassi ewe lambs. A total 103 lambs were divided into four groups before study. Lambs treated with progesterone sponge for 12 days, PGF2α two days removal, 600 IU PMSG removal day 150 mating. The control group (n: 25) did not receive any additional treatment. Vitamin (β carotene + vitamin E) 26) twice combination. first treatment 7th prior insertion second 24) after HCG 28) β hCG. Ewe standing be mounted considered mated. Pregnancy determined by ultrasound 30th There no significant differenses between hCG, concerning estrus, conception, lambing, abortion, twinning, fecundity rate litter size (P>0.05). It concluded that β-carotene-vitamin both, addition synchronization out breeding season improve investigated indices.