Risk Factors for and Prevalence of Failure of Passive Transfer of Immunity in Calves on Dairy Farms in Türkiye

Key Points

• The study aims to identify the prevalence and risk factors associated with failure of passive transfer of immunity in calves on Turkish dairy farms.
• Analyzed prevalence of failure of passive transfer of immunity in Turkish dairy herds
• Examined modifiable and non-modifiable risk factors such as colostrum feeding method and season of birth
• Investigated influences of herd size, dam parity, and calf breed
• Prevalence of failure of passive transfer of immunity aligned with international norms but was higher than recommended levels
• Identified significant risk factors, including colostrum feeding method, season of birth, herd size, dam parity, and calf breed