...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Medycyna Weterynaryjna >Analysis of longevity in Suffolk sheep in the Czech Republic
【24h】

Analysis of longevity in Suffolk sheep in the Czech Republic

机译：捷克共和国萨福克羊的寿命分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The objectives of this study were to evaluate systematic factors that influence longevity and to estimate the heritability of functional longevity by survival analysis of Suffolk sheep in the Czech Republic. A total of 20,502 ewes from 137 flocks were used. The longevity of Suffolk ewes was influenced to some extent by their average prolificacy. The effects of growth intensity and the development of muscularity and fattiness, as well as the effect of the prion protein gene PrP haplotype on the risk of the exclusion of the ewe from breeding were relatively low. Heritability estimates were h(2) = 0.438 for the length of production life in days (LPL), h(2) = 0.098 for the number of litters of the ewe during her lifetime (NL), h(2) = 0.111 for the total number of lambs born (TLB), and h(2) = 0.103 for the total number of labs weaned (TLW). Correlations between the breeding values for LPL and NL, TLB or TLW were high. Therefore, these indicators of the ewe's lifelong production, which are more desirable and understandable for sheep breeders, should be used in indirect selection for longevity.
机译：本研究的目的是评估影响寿命的系统因素，并估计捷克共和国萨福克羊的生存分析。使用了来自137个羊群的总共20,502母羊。 Suffolk Ewes的寿命在一定程度上受到他们的平均水平影响。生长强度和肌肉发育的发展的影响以及朊病毒蛋白基因PRP单倍型对饲养繁殖的风险的效果相对较低。遗传性估计为H（2）= 0.438，用于生产寿命的天数（LPL），H（2）= 0.098为eWE的寿命（NL），H（2）= 0.111羔羊出生的总数（TLB），H（2）= 0.103，用于断奶的实验室总数（TLW）。 LPL和NL，TLB或TLW的育种值之间的相关性高。因此，母羊终身产量的这些指标，对羊育种者来说更为可取和可理解，应用于间接选择寿命。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号