International Journal of Animal Science, Husbandry and Livestock Production ISSN: 2141-5191, Vol. 8(4), pp. 456-462, October, 2022. © Advanced Scholars Journals

Full length Research paper

 Assessment of reproductive performance of Hamary Ewes subjected to hormonal Oestrous synchronization

Faisal OA¹*, Salah ABM², Fatima MI³ and Yassin AA⁴

¹Department of Reproduction and Obstetrics, Faculty of Veterinary Medicine, University of Khartoum

²Ministry of Agriculture and Animal Resources and irrigation.Dept of Animal Production, Sudan

³Animal Production Dept. Faculty of Agriculture and Natural Resource, Kassala University, Sudan

⁴Faculty of Animal Production Science and Technology ,Kassala University, Sudan

*Corresponding author: Email:[email protected]

Accepted 22nd April, 2021

Abstract

This study was designed to assess the effect of hormonal oestrous synchronization with progesterone intravaginal sponges in reproductive efficiency in Hamary ewes. Time taken to display oestrous, number of services per-conception, conception rate (CR), gestation period (GP), lambing rate and twining rate were assessed. Thirty (30) apparently healthy multiparous Hamary ewes were employed. Their age between (3 – 4 years),beside Nine sexually mature fertile apparently healthy 2 -3 years old Hamary rams were used for natural sevices. The ewes were allocated randomly into 3 equal groups (10 each). Group A and B treated with progesterone intravaginal sponges (40 mg) for 9 and 12 days respectively followed by intramuscular (i.m) injection of equine chorionic gonadotropin (eCG) 400 i.u. on the day of sponges removal. Group C employed as control injected only i.m with eCG (400 i.u.). The rams were distributed randomly among the three groups (3 males each).   The collected data was analyzed by excel package of Microsoft office (2010) and SPSS version (16). The present study revealed that, there were no significant different (P>0.05) between time taken for display of oestrous, number of services per-conception, lambing rate and GP for the animal treated with progesterone intravaginal sponges for 9 and 12 days followed by injection of eCG on the day of sponges removal compared to the control. However, a significant different (P<0.05) was reported for CR and twining rate between the treated with same protocol compared to the control. In conclusion, insertion of progesterone intravaginal sponges for 9 or 12 days followed by i.m injection of eCG on the day of sponges withdrawal is the effective protocol for improvement of reproductive performance of Hamary ewes.