摘要
[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。
【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.
出处
《中国牛业科学》
2012年第1期21-23,共3页
China Cattle Science
基金
云南省科技计划项目(2008LA018)
现代农业产业技术体系建设专项
关键词
美系短角肉种牛
繁殖性能
研究
american shorthorn beef
fertility performance
study
