What to do if calves have mites? - briefly
Treat the affected calves with a veterinarian‑approved acaricide, following label directions for dosage and application, and isolate them while cleaning and disinfecting the housing to prevent reinfestation. Monitor the herd regularly and maintain strict hygiene to keep mite populations under control.
What to do if calves have mites? - in detail
When calves develop a mite infestation, immediate action is essential to prevent spread and minimize discomfort.
First, confirm the presence of parasites by inspecting the skin, especially around the ears, neck, and ventral areas. Look for small, moving specks, crusty lesions, or excessive scratching. A magnifying lens can help detect the tiny organisms.
Next, isolate affected animals from the herd. Use a separate pen with solid flooring and provide fresh water and feed to reduce stress. Keep the isolation area clean; remove manure and bedding daily and disinfect surfaces with a solution containing at least 1 % sodium hypochlorite.
Treat the infestation promptly. Options include:
- Topical acaricides: Apply a pour‑on or spray product labeled for bovine mites, following the manufacturer’s dosage and safety instructions. Ensure thorough coverage of all body regions.
- Injectable ivermectin: Administer the recommended dose subcutaneously; repeat after 10–14 days to break the life cycle.
- Oral milbemycin: Use as a single dose in feed or drench, adhering to withdrawal periods.
After treatment, wash the calves with a mild antiseptic shampoo to remove dead mites and debris. Rinse thoroughly and dry to prevent secondary skin infections.
Environmental control is critical. Replace bedding with clean, dry material and allow the pen to dry completely before re‑introducing animals. Apply a residual acaricide to the pen floor and walls, rotating products to avoid resistance. Treat surrounding pastures with appropriate pasture‑based acaricides if wildlife or rodents could serve as reservoirs.
Implement preventive measures:
- Perform regular skin checks at least weekly during warm months.
- Maintain low stocking density to reduce humidity and skin irritation.
- Provide mineral supplements containing zinc and selenium to support skin health.
- Schedule routine deworming and mite control programs in consultation with a veterinarian.
Monitor the herd for recurrence. Re‑examine treated calves 7 days after therapy and again after 21 days. Record any new cases and adjust the control plan accordingly. Prompt veterinary consultation is advised if lesions worsen, systemic illness appears, or if resistance to standard acaricides is suspected.