摘要
为探索定时输精中PMSG+HCG对断奶母猪受胎率、产仔数以及母猪分娩后断奶发情是否存在的影响,试验将120头经产二元杂母猪,胎次在2胎及以上,且体况良好、无阴道炎症的母猪随机分成2组,每组60头。对照组不进行激素处理,采用自然发情鉴定后配种;试验组采用采用PMSG+HCG定时输精程序处理,统计分析2组的参繁母猪受胎率、产仔数和断奶后发情情况。结果表明,对照组的参繁受胎率为78.33%,试验组参繁受胎率为91.67%,2组间的参繁受胎率差异显著。对照组分娩总仔数为581头,窝均产仔数(12.36±3.40)头,试验组分娩总仔数为691头,窝均产仔数(12.79±3.38)头,2组间的窝均产仔数差异不明显,但试验组窝均产仔数t值大于对照组,说明试验组在窝均产仔数比对照组存在优势。对照组断奶后自然发情率为88.89%,试验组断奶后自然自情率为90.38%,试验组与对照组均无明显差异。
To explore the effects of PMSG+HCG on the conception rate,litter size,and post-weaning estrus of multiparous sows in timed AI,120 multiparous crossbred sows with 2 or more parities,in good physical condition,and without vaginal inflammation were randomly divided into 2 groups,each with 60 heads.Control group did not receive hormone treatment and was mated after natural estrus identification;Experimental group was treated with a timed AI program using PMSG+HCG.The conception rate,litter size,and post-weaning estrus of the sows in the two groups were statistically analyzed.The results showed that the conception rate of the sows in control group was 78.33%,and the conception rate of the sows in experimental group was 91.67%,with a significant difference between the two groups.The total number of piglets born in control group was 581,with a litter size of 12.36±3.40,and the total number of piglets born in experimental group was 691,with a litter size of 12.79±3.38.Although there was no significant difference between the two groups in terms of litter size,the t value of the experimental group was greater than that of the control group,indicating that the experimental group had an advantage over the control group in terms of litter size.The natural estrus rate after weaning in control group was 88.89%,and the natural estrus rate after weaning in experimental group was 90.38%.There were no significant differences between control group and experimental group in terms of post-weaning estrus rate.
作者
薛明锐
XUE Mingrui(Guangdong Guangning Guangsanbao Animal Husbandry Co.,Ltd,Guangning Guangdong 526300,China)
出处
《现代畜牧科技》
2024年第1期52-54,共3页
Modern Animal Husbandry Science & Technology
关键词
定时输精
PMSG
HCG
fixed-time artificial insemination
PMSG
HCG
