Farm Animal Welfare

Cattle Pasture Parasite Management Welfare

Gastrointestinal parasites reduce cattle welfare and productivity, and integrated management reduces anthelmintic resistance while protecting animal health.

Key Facts

Ostertagia ostertagia is the primary cattle roundworm causing type II ostertagiasis in yearlings
Targeted selective treatment reduces anthelmintic use and resistance development
Pasture contamination can be managed through grazing rotation and mixed-species grazing
Body condition and FAMACHA scoring help identify animals requiring treatment
Refugia-based approaches maintain susceptible parasite populations to dilute resistant individuals

Welfare Considerations

Cattle with heavy worm burdens experience reduced feed conversion, weight loss, and production of diarrhea. Chronic subclinical infection compromises welfare without obvious clinical signs. Integrated parasite management protects welfare while preserving treatment efficacy.

What You Can Do

Support integrated parasite management programs in cattle welfare certification
Advocate for targeted selective treatment over blanket anthelmintic dosing
Work with a veterinary parasitologist to develop farm-specific parasite control plans