How can lice be removed from a calf? - briefly
«Apply a veterinary‑approved insecticidal spray, such as a pyrethrin‑based formulation, following label dosage, then comb the calf with a fine‑toothed lice comb to remove dead insects.» Repeat the treatment after 7–10 days to interrupt the lice life cycle.
How can lice be removed from a calf? - in detail
Lice infestations on young bovines cause irritation, loss of condition, and secondary infections. Effective control requires accurate diagnosis, appropriate treatment, and preventive management.
Inspection begins with a thorough visual examination of the coat, especially behind the ears, along the spine, and in the tail switch. Use a fine‑toothed comb to collect specimens and confirm species. Record infestation intensity to guide therapeutic choice.
Chemical control options include:
- Topical insecticides containing permethrin (0.5 % w/v) applied to the skin after clipping hair in affected areas; allow a 24‑hour drying period before the animal returns to pasture.
- Systemic agents such as ivermectin (0.2 mg kg⁻¹) administered subcutaneously; repeat dosing after 14 days to interrupt the life cycle.
- Organophosphate sprays (e.g., diazinon 2 % EC) used sparingly on heavily infested zones; observe withdrawal periods for meat and milk.
Non‑chemical measures complement pharmacological treatment:
- Warm water baths with a mild detergent remove adult insects and nits; rinse thoroughly and dry the coat.
- Manual removal of nits using a fine comb after bathing reduces reinfestation risk.
- Pasture rotation and regular manure removal diminish environmental lice reservoirs.
Post‑treatment monitoring involves weekly inspections for at least six weeks. Persistent lice indicate resistance or incomplete coverage, prompting a review of dosage, application technique, or a switch to an alternative product. Maintaining clean housing, regular grooming, and strategic deworming programmes constitute long‑term prevention.