Abortion and various associated risk factors in small ruminants in Algeria
Abortion and various associated risk factors in small ruminants in Algeria
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DOI：
10.1016/j.prevetmed.2015.11.015
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发表时间：
2016-01-01
影响因子：
2.6
通讯作者：
Ben-Mandi, Meriem Hind
中科院分区：
文献类型：
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作者：
Kardjadj, Moustafa;Kouidri, Brahim;Ben-Mandi, Meriem Hind
在阿尔及利亚大量的小型反刍动物（约3100万头）中确定流产的原因，是控制牲畜生产力和生存能力的重要任务。最佳生产和利用受到若干因素的制约：疾病、喂养不良和管理技能低下。因此，在本研究中，阿尔及利亚小反刍动物群的流产率进行了估计，其可能的关联与传染性（PPR，BT和布鲁氏菌病血清阳性）和管理（羊群规模，放牧系统，农业类型，并与其他羊群接触）的风险因素。本研究结果表明，小反刍动物流产率为75.33%（113/150）[95% CI 71.72-78.94%]。风险因素分析采用多变量Logistic回归识别西北部和草原地区以及PPR阳性阿尔及利亚小反刍动物的羊群流产的风险因素。西北地区和草原地区鸡群流产率分别是其他地区的11.47倍[95%CI2.39 -54.88; P=0.002]和10.31倍[95%CI1.28 -82.88; P=0.028]。此外，小反刍动物群中PPRV感染的存在将几率放大了6倍[95% CI 2.221-17.427; P=0.001]。令人惊讶的是，阿尔及利亚小反刍动物群中与流产相关的其他风险因素的单变量分析表明，与蓝舌病（P = 1.000）和布鲁氏菌病血清阳性（P=0.334）没有统计学显著联系。羊群规模（P=0.574），养殖类型（P=0.443），放牧系统（P=0.117）和与其他羊群的接触（P=0.245）也没有统计学意义。我们的研究结果表明，流产的小反刍动物是一个挑战，农民和PPR主要与之相关。因此，一个有效的疫苗接种和控制计划，主张在阿尔及利亚的小反刍动物。(C)2015 Elsevier B. V.版权所有。
Identification of the causes of abortion among the huge population of small ruminants in Algeria (approximate to 31 millions heads), is an important task for the control of livestock productivity and viability scourges to the small ruminants industry. Optimal production and utilization is constrained by a number of factors: disease, poor feeding and low management skills. Therefore, in the present study the prevalence of abortion in Algerian small ruminant's flocks was estimated and its possible association was correlated with infectious (PPR, BT and Brucellosis seropositivity) and managerial (flock size, grazing system, type of farming, and contact with other flocks) risk factors. The present study showed an overall flock prevalence of small ruminant's abortion as 75.33% (113/150) [95% CI 71.72-78.94%]. The risk factor analysis using multivariable logistic regression recognized the north-western and the steppe region as well as PPR positivity as a risk factor for abortion in Algerian small ruminant's flocks. The odds of flock abortion was 11.47 [95% CI 2.39-54.88; P=0.002] and 10.31 [95% CI 1.28-82.88; P=0.028] times higher in northwestern and steppe regions respectively compared to other region. Also the presence of PPRV infection in small ruminant flocks amplified the odds by 6 times [95% CI 2.221-17.427; P=0.001]. Surprisingly, the univariate analysis for the other risk factors associated with abortions in Algerian small ruminant flocks indicated no statistically significant links with bluetongue (P = 1.000) and brucellosis seropositivity (P=0.334). Flock size (P=0.574), type of farming (P=0.443), grazing system (P=0.117) and contact with other flocks (P=0.245) was also not statistically significant. Our results revealed that abortion in small ruminants is a challenge to farmers and PPR was chiefly linked to it. Therefore an effective vaccination and control programme is advocated for small ruminants in Algeria. (C) 2015 Elsevier B.V. All rights reserved.