University of Khartoum

The Effect of Estrous Induction and Synchronization Using Buck Effect and Hormonal Treatment on the Reproductive Performance of Nubian Goats

The Effect of Estrous Induction and Synchronization Using Buck Effect and Hormonal Treatment on the Reproductive Performance of Nubian Goats

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Title: The Effect of Estrous Induction and Synchronization Using Buck Effect and Hormonal Treatment on the Reproductive Performance of Nubian Goats
Author: Abd El Wahid, Manal
Abstract: In this study three experiments were conducted to evaluate the effect of the three protocols used for estrus induction and synchronization in 18 Nubian goats. The goats were assigned to three groups according to the body weight. In the first experiment, group one (n=6 does) were treated with vaginal sponges (VSP) impregnated with 45 mg flurogestone acetate (FGA) for 18 days. Following the removal of the VSP a single dose of 400 i.u of Pregnant mare serum gonadotrophin (PMSG) was applied intramusculary for each doe. The second group of goats (n=6) was treated with PGF2α injected on day 1 and day12 (each dose contain 7.5 mg PGF2α in one ml). The third group of goats (n=6) was used to study the buck effect on inducing and synchronizing oestrus. A castrated buck was introduced to the third group for 15 days to initiate behavioral oestrus. The results indicated that, all protocols (buck effect, PGF2α and VSP+PMSG) used in this study were found to synchronize estrus in Nubian goats with 100% response. The mean duration of estrus was found to be 41.08, 48.16 and 56.41 hr for the buck effect group, PGF2α and VSP+PMSG respectively with no significant difference (p>0.05). In the second phase of the experiment which was meant to study some reproductive parameters as affected by the treatments, 18 does divided into three groups were used. The result indicated that the pregnancy rate was higher in buck effect and PGF2α groups (66.6%) compared with the VSP+PMSG group (33.3%). No attempt was made to verify the reason behind the low rate of pregnancy in the VSP+PMSG group. The litter size was the same in the three groups and the ratio of twin birth to single birth was also maintained similar in the three groups (1:2). The treatments on the other hand did not affect significantly (p≥0.05) the kids' birth weight.
URI: http://hdl.handle.net/123456789/8085
Date: 2015-04-02


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