CAJ | 학술논문

[目的]为了掌握短角肉种牛从美国引种到云南纯繁后的繁殖性能。[方法]通过对美系短角肉用种牛自2008年至2011年的参配母牛数、产犊数、成活数进行统计。[结果]四年的平均繁殖成活率69.18%,比驯化期间提高2%;其中以2008年最低（61.84%）,2010年最高（72.26%）。[结论]美系短角肉种牛的繁殖性能逐年提高。
[목적]위료장악단각육충우종미국인충도운남순번후적번식성능。[방법]통과대미계단각육용충우자2008년지2011년적삼배모우수、산독수、성활수진행통계。[결과]사년적평균번식성활솔69.18%,비순화기간제고2%;기중이2008년최저（61.84%）,2010년최고（72.26%）。[결론]미계단각육충우적번식성능축년제고。
【Objective】This paper summarized the fertility performance of Americium Shorthorn beef cattle since introduced to Yunnan.【Methods】The mating female cattle,the number of calving and alive calves of the bulls from 2008 to 2011 were analyzed.【Results】The average fertility and live rate were 69.18% during the 4 years,which increased 2% than the domestication period.In 2008,the fertility and live rate was the lowest（61.84%）,while it was the highest in 2010（72.26%）.【Conclusion】The fertility performance of American Shorthorn beef cattle increased year by year.