Risk factors for neonatal calf diarrhoea and enteropathogen shedding in New Zealand dairy farms
| Autor: | Nigel P. French, Alex Grinberg, D. J. Prattley, Jonathan C. Marshall, J. Al Mawly, J. Moffat |
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| Rok vydání: | 2014 |
| Předmět: |
Diarrhea
Male Rotavirus Veterinary medicine Salmonella Cattle Diseases Biology medicine.disease_cause Logistic regression Calf diarrhea Risk Assessment Article Odds Feces medicine Animals Cryptosporidium parvum General Veterinary Coinfection digestive oral and skin physiology Odds ratio biology.organism_classification medicine.disease Confidence interval Mastitis Coronavirus Dairying Cross-Sectional Studies Risk factors Multivariate Analysis Animal Science and Zoology Cattle Female New Zealand |
| Zdroj: | Veterinary Journal (London, England : 1997) |
| ISSN: | 1532-2971 |
| Popis: | Highlights • A cross sectional study of neonatal calf diarrhoea was performed on 97 New Zealand dairy farms. • Infectious and environmental risk factors for neonatal calf diarrhoea were identified using multivariable analysis. To investigate the risk factors for neonatal calf diarrhoea, a cross-sectional study was conducted on 97 New Zealand dairy farms. Faecal specimens from 1283 calves were scored as liquid, semi-solid or solid, and analysed for bovine rotavirus (BRV) and coronavirus (BCV), enterotoxigenic K99+Escherichia coli (K99), Salmonella spp. and Cryptosporidium parvum. Calf- and farm-level data were collected by means of a questionnaire and the odds of liquid faeces calculated using mixed effects logistic regression models. Among the infectious agents, only C. parvum (odds ratio [OR] = 2.6; 95% confidence interval [CI], 1.3–5.6; P = 0.02), BRV (OR = 2.7; 95% CI, 1.3–5.9; P = 0.01) and co-infection with more than one agent (compared with mono-infection: OR = 2.5; 95% CI, 1.3–4.8; P = 0.01) were associated with increased odds of liquid faeces in calves which were 9 to 21 days old. Housing of calves in open barns so exposing them to the weather was also associated with increased odds of liquid faeces compared with closed barns (OR = 2.1; 95% CI, 1.1–12.2; P = 0.03). Vaccinating cows against calf enteropathogens (OR = 0.2; 95% CI, 0.1–0.9; P = 0.03), administering waste milk (from mastitis and/or containing antibiotics; OR = 0.4; 95% CI, 0.1–0.8; P = 0.01), the sex of calves (females compared to males OR = 0.2, 95% CI, 0.07–0.7; P |
| Databáze: | OpenAIRE |
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