REPRODUCTIVE PERFORMANCE OF OSSIMI SHEEP AS AFFECTED BY OXYTOCIN INJECTION DURING MATING SEASON. | ||||
| Egyptian Journal of Sheep and Goats Sciences | ||||
| Article 15, Volume 11, Issue 3, December 2016, Page 1-1 PDF (256.12 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejsgs.2016.26342 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. Y. Mohamed1; A. A. Abd El-Hakeam2 | ||||
| 1Animal production Research Institute, Agricultural Research Center, Ministry of Agriculture, Egypt. | ||||
| 2Department of Animal Production, Faculty of Agriculture, Minia University. | ||||
| Abstract | ||||
| ABSTRACT Twenty adult Ossimi ewes were used to study the effect of premating oxytocin Intramuscular injection (IM) on some reproductive traits. They divided randomly into equal two groups. Ewes in both groups were IM injected by 1ml GnRH (1st inj.) at day 0 (GnRH analogue contained 0.004 mg Bussrelin (Receptal. Intrvet, International BV Boxmeer-Holland). Then at day 7, they injected (IM) by 0.7ml PGF2α analogue (Estrumate, Coopers Animal Health LTD, Berkhamsted- England). Each ml of Estrumate contained 250 μg Cloprostenol Acetate. Then, ewes injected the second GnRH dose (1 ml analogue) at day 9, two days post PGF2α injection. Oxytocin (20 I.U/IM , Adwia Company) was only IM injected to each ewe in the first group immediately pre-mating, one day after the second injection with GnRH. Another oxytocin injection was given 12 hr. post the first injection, after pre-second mating by the same rams. Ewes of the second group (control) were not injected oxytocin premating by the same rams, one day after GnRH second injection. Results showed improvement in most reproductive traits of oxytocin injected ewes. The percentages of improvement were 33.33% for estrus rate, non-return rate and lambing, 25% for twining rate, 8.67% for litter size and 44.44% for fecundity, compared to the control group. P4 concentration was high (P<0.05) in treated group affected by oxytocin injection. Thereafter, P4 decreased in all treated groups after PGF2α injection. Post-2nd GnRH injection, P4 levels showed a pronounced increase in all treated groups. At day 20 post-mating, P4 levels showed the highest values in both groups. It could conclude that premating oxytocin Intra-muscular injection could use to improve reproductive performance of Ossimi ewes. | ||||
|
Statistics Article View: 65 PDF Download: 43 |
||||
