University of Khartoum

A survey Study with the assessment of the Impact of Oestrus Synchronization Protocols on Reproductive Performance of Desert Sheep in North Kordofan State. Sudan

A survey Study with the assessment of the Impact of Oestrus Synchronization Protocols on Reproductive Performance of Desert Sheep in North Kordofan State. Sudan

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Title: A survey Study with the assessment of the Impact of Oestrus Synchronization Protocols on Reproductive Performance of Desert Sheep in North Kordofan State. Sudan
Author: Idris, Rogaya Mohamed Ahmed
Abstract: The present study is composed of two parts, the first one aimed to draw a profile of some managerial practices adopted by traditional desert sheep herders in three localities of North Kordofan State through a scientifically structured Questioner.The 2nd part investigated the impact of the three oestrus synchronization protocols on some reproductive trials including progesterone hormone profile throughout pregnancy, in 200 ewes divided into four equal groups (50 ewes each) group A and B were treated with 40mg of flourogestone Acetate vaginal sponges (FGA) for (14) days plus 400 and 600 I.U of PMSG for group A and B respectively. Group C was synchronized by ram effect and the 4th group D was the control. Blood samples were collected one month before treatment and through the following five months of pregnancy to monitor serum progesterone concentration. The collected data was subjected to statistical analysis by Spss version 24 chi square and DMRT were applied for significance and mean separation. The results of survey indicated that the overall lambing rate was 56%, conception rates 75%, abortion rates 19 %, ewe and lamb mortality rates of 9% and 10% respectively. 80% of owners used “kinan” for breeding Control during the breeding season with 2-4 rams for each 100 ewes. Extended lamb weaning was dominant (79%) and weaning at 3 months of age (21). The result of the synchronization protocol highlighted that the highest conception rate (88%) (P< 0.05) was evident in the ram effect group (c) with values of 82%, 78%, and 62% for groups A,B,D respectively. On the other hand the lambing, abortion, and mortality rates were not affected by the treatment. The progesterone hormone levels were highest in the treated animals compared to the control group. Fertility rates were highest in groups A and C (86%) for each and lowest in control group (68%). Similarly, fecundity rate in group A and C excelled that in group B. (74 %, 70% and 62%) for the three groups respectively while prolificacy rate was highest in group A (86%) and lowest in group D (70%) with intermediate values in group B and C. The lambs born to hormonally synchronized ewes secured significantly higher birth weight compared to the control group. The results of the study also documented that the highest conception rate was attained in the ram effect synchronized dams compared to hormonal synchronized mates. The hormonally synchronized group however secured the highest litter size compared to the ram effect synchronized group. The study concluded that oestrus synchronization by ram effect or hormonally promotes the reproductive efficiency of traditionally raised flocks of sheep.
URI: http://khartoumspace.uofk.edu/123456789/26551


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