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Authors
Affiliations
1 Assistant Lecturer: Department of Surgery and Obstetrics, Collage of Veterinary Medicine Al-Muthannah University, IQ
2 Lecturer: Department of Surgery and Obstetrics Collage of Veterinary Medicine–DhiQar University, IQ
3 Assistant Prof: Department of Surgery and Obstetrics Collage of Veterinary Medicine–Basrah University, IQ
Source
Indian Journal of Public Health Research & Development, Vol 11, No 2 (2020), Pagination: 1236-1240
Abstract
This study was accompanies on thirty-six female lambs in addition, six rams of proven fertility were used in the present study in a private flock at Samawa/Iraq in breeding season at November 2018. The ages of lambs ranging from 8-12 months and weighing 30 to 35 kg were used in the study. All ewe lambs are awassi breed. The experimental lambs were divides into three groups randomly each group have twelve lambs. Groups 1, 2 and 3 received intra-vaginal sponges containing 20 mg of fluorogestone acetate FGA (Chronogest, Intervet®) for 14 days, the lambs were given intramuscularly 200 IU (group 1, n= 12), 300 IU (group 2, n=12) and 400 IU (group 3, n= 12) of PMSG (Intervet®, Holland) after removing of intravaginal sponges within 14 h . Estrous was monitored every 6h from 12 to 120 h following injection of PMSG. The lambs were considers in estrous when they were mounts by the rams. The pregnancy of ewes was determined after one month by using of ultrasonography and after 3 months depended to abdominal distention and then waiting until time of parturition. The results showed that the all ewe lambs in the group 2 of treatment (T2) (FGA+300IU PMSG), but only two ewes lambs and one ewe lamb were not appear estrus from group 1 of treatment (T1) (FGA+200IU PMSG) and group 3 of treatment (T3) (FGA+400IU PMSG) respectively. The study showed that the estrus response, pregnancy rate and lambing rate were not significantly differences between the three treatments groups at (P˂0.05). Estrus response in three groups was 83.3%, 100%, 91.6% respectively. Pregnancy rate in three groups were 100%, 83.3%, 90.9% respectively .Lambing rate in three groups were 100% in all groups. The result showed there are no significant differences between the treatments groups in litter size and number of lambs (P˂0.05).This study appeared single lambing were 100%, 90%.100% respectively while twins lambing were zero, 10%, zero respectively and this study did not appear triple lambing.
Keywords
Early puberty, Induction, Lambs, Hormonal Regimes
