CAJ | 학술논문

为探讨不同输精持续时间对长白后备母猪受胎率和产仔数的影响，选择大白后备母猪75头，根据发情时间的不同分为A组、B组、C组、D组和E组，每组15头。每组母猪的输精持续时间分别为2~3、3~4、4~5、5~6、6~7 min，每头母猪输精3次。配种后统一管理，统计每组母猪的受胎率和产仔数。结果显示，输精持续时间在4~5 min以上（含4~5 min），长白后备母猪C组、D组和E组3组之间的受胎率和产仔数均差异不明显，并且C组、D组、E组之间的受胎率和产仔数明显高于输精持续时间低于4~5 min的A组和B组。试验表明，输精持续时间控制在4~5 min时，后备母猪能够获得较高的受胎率和产仔率，为最佳的输精持续时间。
위탐토불동수정지속시간대장백후비모저수태솔화산자수적영향，선택대백후비모저75두，근거발정시간적불동분위A조、B조、C조、D조화E조，매조15두。매조모저적수정지속시간분별위2~3、3~4、4~5、5~6、6~7 min，매두모저수정3차。배충후통일관리，통계매조모저적수태솔화산자수。결과현시，수정지속시간재4~5 min이상（함4~5 min），장백후비모저C조、D조화E조3조지간적수태솔화산자수균차이불명현，병차C조、D조、E조지간적수태솔화산자수명현고우수정지속시간저우4~5 min적A조화B조。시험표명，수정지속시간공제재4~5 min시，후비모저능구획득교고적수태솔화산자솔，위최가적수정지속시간。
The experiment was conducted to investigate the effect of the different insemination duration on conception rate and birth rate after artificial insemination in Landrace White gilts. According to the differences of estrus time,75 Landrace White gilts were divided into five groups with group A,group B,group C,group D and group E,15 gilts of each group. Each gilt insemination duration in each group was 2~3 min,3~4 min,4~5 min,5~6 min and 6~7 min,each gilt was inseminated three times. The conception rates and birth rates of each group were calculated. The results indicated that insemination duration of 4~5 min or more(including 4~5 min),the conception rates and birth rates had no differences among the Landrace gilts group C,group D and group E. The conception rates and birth rates of group C,group D and group E were significantly higher than those of group A and group B whose insemination duration less than 4~5 min. The tests showed that the gilts could obtain higher conception rate and birth rate when the insemination duration was controlled 4~5 min,which was the best insemination duration.