首页 | 本学科首页   官方微博 | 高级检索  
     


Prevalence and risk factors for subclinical coccidiosis in broiler chicken farms in Mazandaran province,Iran
Authors:Shirzad  Mohammad Reza  Seifi   Saeed  Gheisari   Hamid Reza  Hachesoo   Bahman Abdi  Habibi   Hasan  Bujmehrani   Hossein
Affiliation:(1) Department of Avian Medicine, School of Veterinary Medicine, Shiraz University, Shiraz, Iran;(2) Faculty of Veterinary Medicine, University of Mazandaran, Amol, Iran;(3) Poultry Department of Mazandaran Central Veterinary Office, University of Mazandaran, Amol, Iran;
Abstract:Coccidiosis is a disease of almost universal importance in Poultry production. The subclinical form of coccidiosis has most significant economic impact due to impaired growth rate and feed conversion. Some factors such as: age, size of flock, season, etc., may effect on severity of this disease. In this study, the relationships between some major risk factors and prevalence of subclinical coccidiosis were investigated. This study was done in 120 broiler farms in five different cities of Mazandaran province, north of Iran. Five chicks (3–8 weeks of ages) were taken randomly from every 120 farms and post-mortem and parasitological examinations were performed. Five Eimeria spp. were recognized: Eimeria tenella, Eimeria maxima, Eimeria acervulina, Eimeria brunetti, and Eimeria necatrix. The prevalence rate of subclinical coccidiosis among them is 75% (90 farms out of 120). E. acervulina was the most prevalent species (65.5%) followed by E. maxima (17.7%), E. tenella (15.5%), E. brunetti (10%), and E. necatrix (5.5%). According to what the results approve, the occurrence of subclinical coccidiosis is significantly related to the age and size of flock, whereas the other factors such as the season of year, industrial strains, chicken’s keeping system, and anticoccidial drugs do not affect this phenomenon remarkably.
Keywords:
本文献已被 PubMed SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号