Influence of production systems in lambs on the Eimeria oocyst output and weight gain
Influence of production systems in lambs on the Eimeria oocyst output and weight gain
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DOI：
10.1016/j.smallrumres.2004.02.001
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发表时间：
2004-10-01
影响因子：
1.8
通讯作者：
Erhardt, G
中科院分区：
文献类型：
--
作者：
Gauly, M;Reeg, J;Erhardt, G
选用233只自然感染艾美耳球虫的羔羊，研究了4种不同的生产系统对艾美耳球虫卵囊产量和日增重的影响。共鉴定出10种艾美耳球虫，其中E. ovinoidalis是所有系统中最普遍的物种，其次是E.克兰达利斯/韦布里真西斯多重感染是常见的，从个别标本中回收的艾美耳球虫多达9种。在任何组中均未观察到球虫病的临床体征。不同饲养条件下卵囊产量差异显著。在未向动物给予浓缩物的广泛管理组中，该值较高。各组之间的体重发育和日增重也存在显著差异。与粗放管理组相比，集约管理组的平均育肥期显著缩短。不同年龄的体重与卵囊计数之间的相关性呈显著负相关。数值范围在-0.11和-0.25之间。这种关系证明了羔羊艾美耳球虫感染的经济影响。(C)2004 Elsevier B. V.保留所有权利。
Two hundred and thirty-three lambs, naturally infected with Eimeria species, were used to access the effect of four different production systems on the output of Eimeria oocysts and daily weight gain. Ten Eimeria species were identified, E. ovinoidalis being the most prevalent species in all systems, followed by E. crandallis/weybridgensis. Multiple infections were common with up to nine Eimeria species recovered from individual specimens. No clinical signs of coccidiosis were observed in any of the groups. The output of oocysts was significantly different under the various conditions of husbandry. It was higher in the extensively managed group where no concentrates were given to the animals. Significant differences were also found between the groups for bodyweight development and daily weight gain, respectively. The mean fattening period was significantly shorter in the intensively managed groups compared with the extensively managed one. Estimated correlations between bodyweights at different ages and oocyst counts were significantly negative. The values ranged between -0.11 and -0.25. This relationship proves the economic impact of Eimeria infections in lambs. (C) 2004 Elsevier B.V. All rights reserved.