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Pregnancy Rate of Bunaji Cows in a Fixed Time AI Synchronization Protocol Using ovatide

Journal of Agricultural Science and Technology(A) 2019年第1期9卷 46-55页

作者： Ubah Simon Azubuike Rekwot Peter Ibrahim Adewuyi Abdulmujeeb Bode Omontese Bobwealth Oakina Adeyeye Adewale Ayodeji Columbus Philemon Kwinjoh Abah Owoicho Kenneth Agbonu Oluwa Adikpe Ejiofor Charles Ejike Department of Theriogenology University of AbujaNigeria Artificial Insemination Unit National Animal Production Research InstituteShikaZariaKaduna StateNigeria Department of Theriogenology and Animal Production Usmanu Danfodiyo UniversitySokotoNigeria Department of Veterinary Physiology and Biochemistry University of AbujaNigeria Department of Veterinary Parasitology University of AbujaNigeria

This study accessed the reproductive performance of Bunaji cows in an Ovsynch protocol involving *** cows(n=16)aged 4-6 years and weighing between 250-350 kg with body condition scores(BCS)of 2.5-3.5 were *** were two treatment groups for synchronization of *** group 1 comprising Bunaji(n=8)received 50μg of gonadotropin releasing hormone(GnRH)(Cystorelin)and 25 mg of PGF2α.While,treatment group 2 comprising Bunaji(n=8)received 50μg of ovatide and 25 mg of PGF2α.All cows from both treatment groups were inseminated at 16 h after each second GnRH or ovatide *** that showed mucus discharge from the vagina on the day of artificial insemination(AI)were recorded as well as those that had patent *** dilation was measured by taking note of the cows that had mid cervix insemination due to non-passage of the AI gun through the *** palpation was conducted twice at a month interval to select cycling cows within 5-12 d of the estrous cycle before initiating Ovsynch *** was repeated on day 45 post AI to confirm pregnancies in *** showed that the rate of mucus discharge from the vagina was 37.5%and 87.5%for ovatide and Cystorelin,respectively;while the rate of cervical dilation were 75%and 87.5%for ovatide and Cystorelin,respectively(p>0.05),and pregnancy rates were 0%and 12.5%for ovatide and Cystorelin,*** were no significant differences between the two *** was concluded that treatment of Bunaji cows with 50μg ovatide in Ovsynh protocol has heat and ovulation synchronization potentials and zero pregnancy *** was recommended that further studies be carried out using graded doses of 50,100 and 150μg of ovatide in a fixed time AI synchronization protocol in Bunaji cows,to tap the potentials of the hormone in manipulation of bovine reproduction.

关键词： Pregnancy ovatide fixed time AI synchronization cows

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