• 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 >Farmers' perceptions of the causes of low reproductive performance in cows kept under low-input communal production systems in South Africa
【24h】

Farmers' perceptions of the causes of low reproductive performance in cows kept under low-input communal production systems in South Africa

机译：农民对南非低投入公共生产系统饲养的奶牛繁殖性能低下的原因的认识

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 objective of the study was to determine farmers' perceptions of the causes of low reproductive performance in Nguni cows raised on communal rangelands in the Eastern Cape Province of South Africa. Data were collected using participatory rural appraisals and structured questionnaires that were administered to 551 randomly selected farmers from ten communities in the Eastern Cape. Cattle herd sizes ranged from 3 to 11 and were mainly composed of cows. Cattle sales were ranked as the most important use of cattle in all the villages. Tick-borne diseases and poor animal condition were reported as chief constraints of cattle production in most communities. More than 60% of the interviewees reported that the age at puberty and age at first calving for their cows varied between 18 and 36, and 24 and 48months, respectively. About 95% of the respondents reported long calving intervals and low bull numbers as major causes of low reproductive performance in cows in the communal areas. It was concluded that farmers perceived delayed age at puberty and at first calving, long calving intervals and low bull numbers as the major causes of low reproductive performance in Nguni cows raised on communal rangelands in South Africa.
机译：这项研究的目的是确定农民对南非东开普省公共牧场上饲养的Nguni奶牛繁殖性能低下的原因的认识。使用参与性农村评估和结构化问卷收集了数据，该问卷已对来自东开普省10个社区的551名随机选择的农民进行了管理。牛群大小从3到11不等，主要由母牛组成。在所有村庄中，牛的销售被列为最重要的牲畜用途。据报导，虫传播的疾病和恶劣的动物状况是大多数社区牛生产的主要制约因素。超过60％的受访者报告说，他们的母牛的青春期和初产犊年龄分别在18个月至36个月，24个月至48个月之间。大约95％的受访者表示，产犊间隔长和公牛数量少是造成公共区域奶牛繁殖性能低下的主要原因。结论是，在南非的公共牧场上饲养的Nguni牛，农民认为青春期和初产犊的年龄延迟，产犊间隔长和公牛数量少是造成繁殖性能低下的主要原因。

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