Bovine Genital Campylobacteriosis: Reproductive Welfare
Bovine genital campylobacteriosis causes reproductive failure and early embryonic death in cattle herds, with welfare implications for breeding animals and unborn offspring.
Key Facts
- Caused by Campylobacter fetus subspecies venerealis, a venereal pathogen
- Spreads at mating through infected bulls that are asymptomatic carriers
- Causes early embryonic death and repeat breeding in cows and heifers
- Extended calving intervals and reproductive failure have animal welfare and economic consequences
- Vaccination of cows and testing/treatment of bulls are primary control strategies
Welfare Considerations
Bovine genital campylobacteriosis creates welfare issues primarily through reproductive failure and the extended cycles of insemination and early pregnancy loss that cows experience. Cows returning to service repeatedly experience the physiological burden of repeated oestrus cycles and early pregnancy loss without producing a live calf. The underlying infection causes minimal direct clinical welfare signs in adult cattle, making detection challenging. The indirect welfare impact on unborn animals through early embryonic death is a welfare consideration for those who ascribe moral status to early embryos. Control focuses on preventing spread and restoring reproductive efficiency.
What You Can Do
- Test bulls for campylobacter before use in natural service or AI semen collection
- Vaccinate cows and heifers in at-risk herds as directed by your vet
- Monitor calving intervals as an early indicator of reproductive disease problems
- Investigate repeat breeding problems promptly to identify underlying causes
- Source bulls only from herds with known clean campylobacter status