Pathogenicity of Eimeria praecox alone or associated with Eimeria acervulina in experimentally infected broiler chickens

详细信息	查看全文 | 推荐本文 |

• 作者：Jean-Michel Ré ; pé ; rant^a ; ^{Jean-Michel.REPERANT@anses.fr} ; Martina Dardi^b ; Marc Pagè ; s^b ; Martine Thomas-Hé ; naff^a
• 关键词：E. praecox ; E. acervulina ; Broiler ; Pathogenicity ; Coccidia
• 刊名：Veterinary Parasitology
• 出版年：2012
• 期刊代码：107_03044017
• 类别：abs
• 出版时间：8 June, 2012
• 卷：187
• 期：1-2
• 页码：333-336
• 文件大小：175 K

摘要

Eimeria praecox and Eimeria acervulina are two species of coccidia parasites infecting chickens, which develop in the duodenum. The purpose of this study was to evaluate the pathogenicity of E. praecox and to study interactions of this coccidium with E. acervulina. The results showed that the pathogenicity of E. praecox was related to the infective dose, and that its impact on individual weight and weight gain was significant from the lowest administered dose: 5000 oocysts per bird. No morbidity was observed, even with the highest infective dose, but faecal consistency alteration was higher with increasing infective doses. No consistent lesion was observed. When E. praecox was associated with E. acervulina with a low infective dose, performance deterioration seemed to be an additional effect of the two species. However, in the case of heavy infections, signs worsened along with duration of negative impact on growth, compared to a mono-infection.