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Biosecurity for neonatal gastrointestinal diseases
George M Barrington1, John M Gay, James F Evermann
1Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA. geob@vetmed.wsu.edu
Summary
Neonatal calf diarrhea, a major cause of calf mortality and economic loss, is influenced by calf immunity, pathogen load, and environmental factors. Improving calf immunity and biosecurity measures are key to prevention.
Area of Science:
- Veterinary Medicine
- Animal Science
- Agricultural Economics
Background:
- Infectious diarrhea significantly impacts neonatal calf health, leading to substantial economic losses in cattle farming.
- Identified risk factors for calf diarrhea fall into three main categories: calf-related, pathogen-related, and environment-related.
Purpose of the Study:
- To categorize and analyze the primary risk factors contributing to neonatal calf diarrhea.
- To highlight the importance of passive immunity, pathogen characteristics, and environmental management in disease prevention.
Main Methods:
- Review and synthesis of existing literature on neonatal calf diarrhea risk factors.
- Categorization of risk factors into calf, pathogen, and environmental influences.
Main Results:
- Calf immune status, particularly colostrum-derived passive immunity, is the primary calf-related risk factor.
- Pathogen risk is linked to inoculum size and co-infections, with most pathogens acting as opportunists.
- Environmental and housing conditions present modifiable risk factors amenable to biosecurity and management strategies.
Conclusions:
- Effective prevention of neonatal calf diarrhea requires a multi-faceted approach addressing calf immunity, pathogen control, and environmental management.
- Implementing robust biosecurity and environmental monitoring strategies is crucial for reducing calf morbidity and mortality.