A calf has lice: what should be done? - briefly
Apply a veterinary‑approved topical insecticide (e.g., pyrethrin‑based spray) at the recommended dose, repeat after 7–10 days to interrupt the lice life cycle, and ensure the calf’s skin is clean before treatment. Clean and disinfect the bedding and surrounding environment to prevent re‑infestation.
A calf has lice: what should be done? - in detail
A young bovine presenting a lice infestation requires immediate assessment and systematic intervention.
First, confirm the presence of parasites by examining the coat, especially around the neck, ears, and tail base. Look for small, grayish insects moving rapidly, and for signs of irritation such as scratching, hair loss, or crusty skin.
Second, select an appropriate ectoparasiticide. Products approved for cattle, such as topical pour‑on formulations containing pyrethrins, organophosphates, or macrocyclic lactones, are effective. Follow label instructions precisely: apply the correct dose per kilogram of body weight, ensure thorough coverage of the hair coat, and avoid contamination of feed or water sources.
Third, treat the environment to prevent re‑infestation. Clean and dry the calf’s bedding, disinfect stall surfaces with a suitable acaricide, and remove manure that can harbor eggs. Rotate pasture areas when possible to break the life cycle.
Fourth, monitor the animal for adverse reactions and for residual lice activity. Re‑examine the calf after 7–10 days; if live insects persist, repeat treatment according to the product’s recommended interval, typically no sooner than 14 days.
Fifth, implement preventive measures. Regularly apply a low‑dose ectoparasiticide during high‑risk seasons, maintain good hygiene, and inspect new stock before integration.
Key points for successful management:
- Accurate diagnosis through visual inspection.
- Use of a licensed, species‑specific insecticide at the correct dosage.
- Environmental sanitation and pasture management.
- Follow‑up examinations and repeat treatment if necessary.
- Ongoing preventive program to reduce future outbreaks.