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首页> 美国政府科技报告 >Conception Rates following Oestrus Synchronization and Artificial Insemination in the Nubian Goats
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Conception Rates following Oestrus Synchronization and Artificial Insemination in the Nubian Goats

机译：努比亚山羊发情同步和人工授精后的概念率

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This experiment was designed to investigate into the efficiency of different hormonal treatments in inducing and synchronizing oestrus in Sudanese Nubian goats and their fertility following a fixed time artificial insemination programme using Saanen buck semen. From a flock of 150 females of mixed breeds and crosses, 34 female Nubian goats were selected and grouped by ages. They were then randomly assigned to different treatments Viz: Four females were allowed to cycle naturally as control (Treatment A): ten were injected intramuscularly with 125 (mu) g Cloprosterol, two doses gives 13 days apart (Treatment C): the last ten females were treated as C but were injected intramuscularly with 300 I:U pregnant Mare Serum Gonadotropin (PMSG) two days before removal of sponges (Treatment D): one vasectomized buck and other aspermic were immediately introduced to the treated groups to aid in detection and initiation of oestrus. Conception rates were estimated as non return rates, and early pregnancy (3-10 weeks) after insemination was diagnosed by progesterone Radio -Immuno -Assay (RIA) and late pregnancy (90-110 days) post-insemination was diagnosed by abdominal palpation technique. The obtained results indicated that all employed treatments were capable of inducing and synchronizing oestrus in Sudanese Nubian goats. Treatment B being significantly higher than other treatments (P(<=) 0.05). There was significant difference between treatments (P(<=)0.05) as far as the duration of oestrus period is concerned in this study. Pregnancy rates were significantly different between treatments (P(<=)0.05). Treatment B has more advantages than C and D in oestrus induction and synchronization and could easily be applied in a large flock of different ages with minimal labour required, while C and D proved to be difficult in its application in non- parous goats and requires assistance and some hygienic measures during application. This study recommended cloprosterol (Treatment B), fixed time artificial insemination, progesterone RIA for monitoring early pregnancy and return to heat, and improve nutritional programmes. (Author). 227 refs, 8 tab, 9 fig. (Atomindex citation 29:013692)

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