• 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 >Epidemiology of nematode parasites of sheep around Jimma, southwestern Ethiopia
【24h】

Epidemiology of nematode parasites of sheep around Jimma, southwestern Ethiopia

机译：埃塞俄比亚西南部吉马周边地区绵羊线虫寄生虫的流行病学

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

An investigation was made into the epidemiology of nematode infections of sheep in two districts of Jimma zone, southwestern Ethiopia. We used two approaches-long-term monitoring of identified sheep for nematode infection and abattoir or market survey for analysis. In the first monitoring regime, we used 80 lambs [40 sheep (20 per sex) from each district (Dedo and Yebu)] averaging 4-5months of age. Faecal egg counts (FEC), packed cell volume (PCV) and body weight changes were monitored over a period of 1year. Additionally, faecal samples were collected (on a weekly basis) from sheep brought to abattoir/market for 1year to monitor faecal egg counts. The nematode parasite burden, as judged by FEC and PCV, was generally low indicating that the climatic conditions are not conducive to the development and survival of nematode eggs and the free-living stages; hence, little transmission occurred. In the experimental flocks, the highest FEC and lower PCV were recorded during the long rainy season (June to September) with peak in August and September. Faecal samples collected from abattoir/market also followed the same trend. Results from experimental sheep indicated that location had a significant (P<0.01) effect on FEC, PCV and average daily body weight gain. The FEC and PCV for sheep in Yebu (mid-altitude) district were 126 plus or minus 3.33 and 30.6 plus or minus 0.26, whereas the values for Dedo (highland) were 93 plus or minus 4.35 and 32.0 plus or minus 0.21, respectively. The results indicate that the highland areas are comparatively less favourable to the survival and development of nematodes. Female lambs had lower FEC and higher PCV compared to male lambs (P<0.05). The overall nematode parasite challenge in the area, however, is low. We, therefore, recommend rotational grazing management combined with monitoring parasite load and selective treatment to reduce productivity loses and pasture contamination.
机译：对埃塞俄比亚西南部吉马地区两个地区的绵羊线虫感染的流行病学进行了调查。我们使用了两种方法-长期监测已鉴定的绵羊的线虫感染和屠宰场或市场调查以进行分析。在第一个监测制度中，我们使用了80只羊羔（每个地区（Dedo和Yebu）的40只绵羊（每只雌性20只）），平均年龄为4-5个月。在1年的时间内监测粪便卵数（FEC），堆积细胞体积（PCV）和体重变化。此外，（每周一次）从带到屠宰场/市场的绵羊中收集粪便样本（每周一次），以监测粪便卵数。根据FEC和PCV的判断，线虫的寄生虫负担一般较低，这表明气候条件不利于线虫卵的发育和存活以及自由生活阶段;因此，几乎没有传播。在实验羊群中，在长雨季（6月至9月）记录到最高的FEC和较低的PCV，在8月和9月达到峰值。从屠宰场/市场收集的粪便样品也遵循同样的趋势。实验羊的结果表明位置对FEC，PCV和平均每日体重增加具有显着（P <0.01）影响。 Yebu（中海拔）地区绵羊的FEC和PCV分别为126正负3.33和30.6正负0.26，而Dedo（高地）的值分别为93正负4.35和32.0正负0.21。结果表明，高地地区对线虫的生存和发展相对不利。与雄性羔羊相比，雌性羔羊的FEC较低，PCV较高（P <0.05）。然而，该地区的整个线虫寄生虫挑战很低。因此，我们建议轮流放牧管理与监测寄生虫负荷和选择性处理相结合，以减少生产力损失和牧场污染。

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