多胎绵羊两年三产高频繁殖技术优化试验
Experiments on the optimization of the accelerated lambing of three lamb crops in two years in prolific sheep
樊文华 1李国保 2杨华 1倪建宏 3周华倩 1杨永林 3余乾 3张文喆 3赵宗胜 4闫佳许 4王政力4
作者信息
- 1. 新疆农垦科学院省部共建绵羊遗传改良与健康养殖国家重点实验室,新疆 石河子 832000;石河子大学动物科技学院,新疆 石河子 832000
- 2. 新疆北屯屯旺牧业科技有限公司,新疆 北屯 836000
- 3. 新疆农垦科学院省部共建绵羊遗传改良与健康养殖国家重点实验室,新疆 石河子 832000
- 4. 石河子大学动物科技学院,新疆 石河子 832000
- 折叠
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.
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.
关键词
绵羊/两年三产/高频繁殖技术/产羔率/经济效益Key words
sheep/three lamb crops in two years/the accelerated lambing/lambing rate/economic benefit引用本文复制引用
基金项目
新疆维吾尔自治区"天山英才"培养计划(2022TSYCCX0122)
新疆生产建设兵团农业GG项目()
新疆维吾尔自治区肉毛兼用绒毛用羊品种选育提升计划(2024XJRMY-03)
新疆生产建设兵团农业科技创新工程专项(NCG202211)
出版年
2024
国家科技期刊平台
NSTL
万方数据