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当前位置: 首页 > 文章 > 定时输精对断奶母猪繁殖性能的影响 饲料博览 2017 (4) 33-35
Position: Home > Articles > The Effect of Timing of Insenmination on the Reproductive Performance of Weaned Sows Feed Review 2017 (4) 33-35

定时输精对断奶母猪繁殖性能的影响

作  者：
方礼禄;沈君;严彩虹;杨光
单  位：
北京市SPF猪育种管理中心
关键词：
断奶母猪;定时输精;妊娠率;分娩率;窝产仔数
摘  要：
为了研究定时输精对断奶母猪繁殖性能的影响,将80头断奶母猪分成两组,每组40头,断奶第2天开始查情。试验组断奶母猪断奶24 h后肌注促性腺激素(PMSG),再过72 h肌注促性腺激素释放激素(Gn RH),肌注Gn RH 24 h进行输精1次,过24 h再输精1次;对照组断奶母猪发情就开始输精,过24 h再输精1次(如还发情,第2次输精过24 h后再输精1次);精液剂量都为80 m L(2×10~9个精子细胞)。结果表明,试验组的断奶母猪的发情率、妊娠率、分娩率均高于对照组,试验组断奶母猪的窝产仔数、窝产活仔数与对照组无差异;试验组断奶母猪的发情静立时间与对照组无差异;试验组断奶母猪有3头无发情迹象,但是经过定时输精后有1头成功受精并分娩,产仔数为11头。通过肌注PMSG+Gn RH可提高断奶母猪的发情数、妊娠率和分娩率,但不能提高断奶母猪的窝产仔数、窝产活仔数,减少对隐性发情断奶母猪的漏配率,不影响断奶母猪的静立反应时间。
译  名：
The Effect of Timing of Insenmination on the Reproductive Performance of Weaned Sows
作  者：
FANG Lilu;SHEN Jun;YAN Caihong;YANG Guang;Beijing SPF Swine Breeding and Management Center;
关键词：
weaned sows;;AI;;fertilization rate;;farrowing rate;;litter size
摘  要：
This study aimed to evaluate the effect of fixed-time artificial insemination(FTAI) on reproduc-tion performance of weaned sows.A total of 80 weaned multiparous sows was allocated to two groups:FTAI-Swean-ed sows(n=40) received a 1 000 IUPMSG intramuscular injection at 24 h postweaning and a 100 μg Gn RH at 96 hour-spostweaning,the first FTAI regardless of estrus expression after 24 h of Gn RH and repeated every 24 h.Control-S(n=40) no hormone application and AIs at 0,24,and 48 h after the onset of estrus if they were still in standing estrus.All the weaned sows were inseminated with the doses of boar sperm(2 × 10~9 sperm cells/80 m L).Compared withcontrol-S,FTAI-Sweaned sows had higher estrus rate(P>0.05),fertilization rate,farrowing rate,but litter size orborn alive was similar between these groups,respectively.One no static reaction of FTAI-Sweaned sows had success-fully fertilized and farrowed by double FTAI.There were no differences in the time of static reaction between FTAI-Sand control-S(P>0.05).It was concluded that induction of estrus and ovulation by PMSG+Gn RH was a viable strategyto FTAI and improved estrus rate,farrowing rate or 1itter size by breeding at aoptimal fixed time between AI and ovula-tion.

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