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논문 기본 정보

자료유형
학술저널
저자정보
Sung-Hwan Lee (Kangwon National University) Ha-Young Kim (Animal and Plant Quarantine Agency) Eun Wha Choi (Kangwon National University) Doo Kim (Kangwon National University)
저널정보
대한수의학회 Journal of Veterinary Science Journal of Veterinary Science 제20권 제6호
발행연도
2019.11
수록면
63 - 75 (13page)

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Calf diarrhea caused by infectious agents is associated with economic losses in the cattle industry. The purpose of this study was to identify the causative agents and epidemiological characteristics of diarrhea in Korean native calves (KNC). In total, 207 diarrheal KNC aged less than 7 months were investigated. Fecal samples collected from the rectum were examined for causative agents using polymerase chain reaction (PCR) or real-time PCR and the number of oocysts were counted. Fourteen causative agents were detected from 164 of the 207 diarrheal KNC. Rotavirus was the most common agent (34.8%), followed by Eimeria spp. (31.7%), Escherichia coli (22.0%), Giardia spp. (14.0%), Clostridium difficile (9.8%), bovine viral diarrhea virus (8.5%), coronavirus (7.9%), Cryptosporidium spp. (7.3%), torovirus (6.7%), parvovirus (5.5%), norovirus (4.9%), kobuvirus (1.8%), adenovirus (1.2%), and Salmonella spp. (0.6%). About 95 (57.9%) of 164 calves were infected with a single causative agent and 42.1% were infected by multiple agents. No significant difference was observed in mortality between calves infected with a single agent and multiple agents. The occurrence of diarrhea caused by rotavirus, Eimeria spp., kobuvirus, and Giardia spp. was significantly different based on onset age, and the prevalence of diarrhea caused by rotavirus or C. difficile was significantly different between seasons. This study help the understanding of KNC diarrhea for the development of an effective strategy for disease prevention and control, especially in Eastern provinces of South Korea.

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ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCES

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