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KMID : 1023520160390010021
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Korean Journal of Veterinary Service
2016 Volume.39 No. 1 p.21 ~ p.28
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Prevalence of Eimeria infection in commercial broilers in Gyeonggi province, Korea
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Yang Byung-Hun
Shim Hang-Sub
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Abstract
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Protozoan parasite, the genus Eimeria, causes an intestinal disease, coccidiosis, in young broilers. Coccidiosis induces significant economic loss in poultry production. This study was designed to identify the prevalence of Eimeria spp. in broilers in Gyeonggi province, Korea. Fecal samples from broilers at 94 farms were collected in two chicken slaughterhouses between March and June 2015. Eimeria infection was determined by microscopic examination and PCR using ITS-1 region. The prevalence of Eimeria was 58.5% (55 of 94). E. acervulina was identified in 96.4% of samples, E. tenella in 81.8%, E. maxima in 12.7%, E. praecox in 12.7%, E. brunetti in 5.5%, E. necatrix in 1.8%, and E. mitis in 1.8%. Body weight (BW) of broilers infected with both E. tenella and E. acervulina (mean=1.53±0.19B kg) was significantly lower than broilers with E. acervulina positive/E. tenalla negative (mean=1.74±0.07A kg) or Eimeria negative (mean=1.65±0.15A kg) (Duncan’s multiple range test, P＜0.01). High prevalenceof Eimeria tenella and the impact on the broiler body weight shows the importance of this protozoa in broiler industry. Development of the periodic monitoring strategy and systemic management for the purpose of the prevention/eradication of Eimeria infection among broilers is required.
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KEYWORD
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Eimeria spp. Coccidiosis, Broiler chickens, PCR
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