• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tropical Animal Health and Production >Pre-weaning growth performance of crossbred lambs (Dorper x indigenous sheep breeds) under semi-intensive management in eastern Ethiopia
【24h】

Pre-weaning growth performance of crossbred lambs (Dorper x indigenous sheep breeds) under semi-intensive management in eastern Ethiopia

机译：埃塞俄比亚东部半集约化管理下的杂交羔羊（Dorper x土著绵羊品种）的断奶前生长表现

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

A study was conducted to assess the effect of genetic and non-genetic factors (litter size, sex of lamb, and parity of dam) on pre-weaning growth performance of crossbred lambs (75 % Dorper (DR) 25 % indigenous lambs; and 50 % Dorper 50 % indigenous lambs) under semi-intensive husbandry practices in eastern Ethiopia. Data from a total of 275 Dorper sire breed x indigenous (Blackhead Ogaden [BHO] and Hararghe Highland [HH]) crossbred lambs with different genetic group of the parental breeds were collected for three consecutive years (2009 to 2011). Pre-weaning growth performance attributes of crossbred lambs studied were birth weight, weaning weight, and pre-weaning average daily gain. Data were analyzed using the GLM procedure of SAS (2003). Breed group and non-genetic factors significantly affected pre-weaning growth performance. Lambs with 75 % Dorper and 25 % indigenous had higher (P < 0.01) birth weight than 50 % DR and 50 % HH but similar to 50 % DR and 50 % BHO. Weaning weight and pre-weaning live weight gain were higher (P < 0.01) for A3/4DRA1/4BHO and A3/4DRA1/4HH than 50 % Dorper inheritance. Single-born lambs had higher weight at birth, weaning weight, and pre-weaning average daily gain as compared to twins. Sex comparison is significant (P < 0.05) and male lambs recorded highest pre-weaning growth performance compared to female counterparts. Parity, season, and lambing year significantly (P < 0.01) influenced the pre-weaning growth of crossbred lambs. Therefore, it could be concluded that 50-75 % Dorper inheritance improved pre-weaning growth performance of indigenous breeds of Hararghe Highland and Blackhead Ogaden sheep. The result also suggested culling of ewes older than fourth parity to improve the pre-weaning growth performance of lambs.
机译：进行了一项研究，以评估遗传因素和非遗传因素（产仔数，羔羊性别和大坝平价）对杂交羔羊断奶前生长性能的影响（75％的Dorper（DR）25％的本地羔羊）;以及埃塞俄比亚东部半集约饲养法的50％杜泊（Dorper）和50％土著小羊）。连续三年（2009年至2011年）收集了具有不同亲本基因组的275个多珀公父种x土著（黑头Ogaden [BHO]和Hararghe Highland [HH]）杂交羔羊的数据。研究的杂交羔羊断奶前的生长性能属性是出生体重，断奶体重和断奶前平均日增重。使用SAS（2003）的GLM程序分析数据。品种组和非遗传因素显着影响断奶前生长性能。出生率为75％的羔羊和25％土著的羔羊的出生体重（P <0.01）高于50％DR和50％HH的出生体重，但与50％D​​R和50％BHO相似。 A3 / 4DRA1 / 4BHO和A3 / 4DRA1 / 4HH的断奶体重和断奶前活体重增加高于（50％）Dorper遗传。与双胞胎相比，单胎羔羊的出生体重，断奶体重和断奶前平均日增重更高。性别比较显着（P <0.05），与雌性相比，雄性羔羊断奶前的生长表现最高。胎次，季节和产羔年显着（P <0.01）影响了杂交羔羊断奶前的生长。因此，可以得出这样的结论：50％到75％的Dorper遗传可以改善Hararghe高地和Blackhead Ogaden绵羊的本地品种的断奶前生长性能。该结果还建议淘汰年龄超过第四胎的母羊，以提高断奶前羔羊的生长性能。

著录项

相似文献

  • 外文文献
  • 中文文献
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