Survey on enteric diseases in chicken

Kim, Hong-jib; Kang, Mun-il; Chung, Un-ik

Korean Journal of Veterinary Research 1996;36(4):1007-1012.

Hong-jib Kim¹, Mun-il Kang², Un-ik Chung¹

¹Miwon Institute of Animal Science
²College of Veterinary Medicine, Chonnam National University

닭의 장염발생 조사

김홍집¹, 강문일², 정운익¹

¹(주)미원 축산과학연구소
²전남대학교 수의과대학

Abstract

The purpose of the survey was to understand the field situation on the occurrence of enteric diseases in poultry farms in Korea. During the period from January of 1991 to December, 1992, 279(35.8%) out of 779 farms surveyed experienced the cases of enteritis in their chickens. The farms with diarrheal problems consisted of 157(45.1%) of 348 broiler flock, 28(32.6%) of 86 breeder flock, and 94(27.2%) of 345 layer flock. The main diseases causing enteritis were frequently appeared as infectious bursal disease(27.3%), colibacillosis(22.6%), and coccidiosis(8.6%). Necrotic enteritis(NE) in chicken occurred in 21 farms(2.7%) among 779 farms examined. The outbreaks of NE were divided 4.7% in breeders, 4.0% in broilers, and 0.9% in layers, respectively. NE occurred mainly in the age(71.4%) of 20~30 days and the mortality was varying from 1.4% to 10.0% for broilers, 3.0% for layers and 0.8% for breeders. Seasonal prevalence of NE showed the highest as 52.4% in summer and followed by 33.3% in autumn, 9.5% in spring and 4.5% in winter.

Key Words: chicken, diarrhea, necrotic enteritis, occurance, seasonal prevalence