【摘要】 为建立多胎绵羊两年三产高频繁殖技术，以404只多胎萨福克经产母羊为研究对象，通过CIDR+PMSG法同期发情、人工输精、B超早期妊娠诊断施行两年三产，比较分析子宫颈口输精和腹腔内窥镜输精母羊的妊娠率，优化操作流程，分析经济效益。结果表明：采用CIDR+PMSG法实施同情发情母羊的发情率为95%,腹腔内窥镜输精母羊的妊娠率为87%,子宫颈口输精母羊的妊娠率为80%,腹腔内窥镜输精优于子宫颈口输精。两年三产高频繁殖技术母羊的产羔率为318%,比一年一产(212%)提高106%;同期发情及子宫颈口输精处理的成本40元/只，只均经济效益334.04元。说明两年三产高频繁殖技术可进一步提高多胎绵羊的繁殖效率，增加养殖效益。更多还原

【Abstract】 To establish an accelerated lambing system of three lamb crops in two years in prolific sheep, 404 prolific Suffolk ewes were chosen to carry out the practice of accelerated lambing through taking the measures of estrus synchronization by using the CIDR+PMSG method, artificial insemination and early pregnancy diagnosis by ultrasound. The pregnancy rates of the ewes with intraperitoneal endoscopic insemination and uterine cervical port insemination were compared, the optimal operating procedure was established, and economic benefits were analyzed. The results showed that the estrus rate of ewes with CIDR+PMSG method, abdominal endoscopic insemination, and cervical-oral insemination was 95%, 87%, and 80%, respectively. The proficiency of abdominal endoscopic insemination was superior to cervical-oral insemination. The lambing rate of ewes from the accelerated lambing was 318%, which was 106% higher than once a year lambing(212%). The cost of estrus synchronization and cervical insemination was 40 yuan per ewe, and economic benefit was 334.04 yuan. It showed that the three lamb crops in two years system can further improve the reproductive efficiency of prolific sheep and increase the economic benefit of lamb farming.更多还原