• 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 >Risk Factors for Kid Mortality in West African Dwarf Goats Under an Intensive Management System in Ghana
【24h】

Risk Factors for Kid Mortality in West African Dwarf Goats Under an Intensive Management System in Ghana

机译：集约化管理体制下西非矮山羊的儿童死亡率的危险因素

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

Breeding records from 1997 to 2000 for West African Dwarf goats kept under an intensive management system on the National Breeding Station at Kintampo in Ghana were analysed for the effect on mortality of sex, season and type of birth, and birth weight. The pre-weaning and post-weaning mortalities were 10% (n = 390) and 23.1% (n = 351), respectively, while the overall mortality from birth up to 12 months of age was 30.8% (n = 390). The post-weaning period recorded significantly higher proportions of deaths in males, females, single-born and twins, during the rainy and dry seasons, and for kids with low or high birth weight, compared to the pre-weaning period. There was significantly higher mortality in male kids than in female kids. The odds and risks of death for male kids were about twice those for females at post-weaning and up to 1 year of age. At pre-weaning and up to 1 year of age, a higher proportion of the dead were twins. Twins had ∼2.5 the risk of death at pre-weaning, compared to singles. Also, kids born in the rainy season had significantly higher mortality than those born in the dry season. Kids that died by the time of weaning were significantly lighter in weight at birth than those that survived. Male kids had significantly higher mean weights at birth and at weaning, but not at 12 months of age. The significance of these findings is discussed.
机译：分析了1997年至2000年在加纳金塔姆波国家育种站严格管理的西非矮山羊的育种记录，分析了它们对性别死亡率，出生季节和出生类型以及出生体重的影响。断奶前和断奶后死亡率分别为10％（n = 390）和23.1％（n = 351），而从出生到12个月大的总死亡率为30.8％（n = 390）。与断奶前相比，断奶后在雨季和旱季以及出生体重低或高的孩子中，男性，女性，单胎和双胞胎的死亡比例要高得多。男性孩子的死亡率明显高于女性孩子。男性孩子断奶后和一岁以下的死亡几率和死亡风险大约是女性的两倍。在断奶前和不超过1岁时，较高比例的死者是双胞胎。与单身相比，双胞胎断奶前的死亡风险约为2.5。另外，雨季出生的孩子的死亡率明显高于旱季出生的孩子。断奶时死亡的孩子出生时的体重比幸存的孩子轻得多。男性孩子在出生和断奶时的平均体重明显较高，但在12个月大时没有。讨论了这些发现的意义。

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