Epidemiological Features of Adult Dairy Cattle Diarrhea Based on Analysis of Etiological Diagnosis Data in Japan from 2004 to 2013

Abstract

We analyzed the epidemiological features of adult dairy cattle diarrhea using etiological diagnosis data from the livestock hygiene service centers in 18 prefectures of Japan between 2004 and 2013. Among 212 cases, 45% were diagnosed as a bovine coronavirus (BCV) infection; 3-9% of the cases were diagnosed as a bovine rotavirus B (RVB), salmonella, bovine rotavirus C (RVC), bovine rotavirus A (RVA) or bovine torovirus (BToV) infection. In contrast, 23% remained unidentified. At least half of the viral (excluding RAV) and salmonella infections were observed as epidemic outbreaks. The proportion of single occurrence in unidentified cases was greater than for other causes. Symptoms caused by BCV and salmonella tend to be more severe than from other causes. Epidemic diarrhea in adult dairy cows is likely to be diagnosed as a BCV, RVB, RVC, BToV or salmonella infection.Copyright © 2019, Japan Veterinary Medical Association. All rights reserved.