How to treat sheep for mite infestation? - briefly
Apply a licensed acaricide (e.g., ivermectin or doramectin) at the recommended dose and repeat after the mite life cycle to ensure eradication. Complement medication with shearing, thorough cleaning of housing, and regular monitoring to prevent recurrence.
How to treat sheep for mite infestation? - in detail
Treating a mite‑infested flock requires accurate diagnosis, appropriate medication, correct application, and ongoing management to prevent recurrence.
First, confirm infestation by inspecting the fleece and skin for crusty lesions, hair loss, and intense scratching. Collect a few skin scrapings and examine them under a microscope to identify the species, such as Psoroptes, Sarcoptes, or Chorioptes, because treatment choice depends on the parasite’s biology.
Select an acaricide based on species, resistance history, and regulatory approval. Common chemical options include:
- Organophosphates (e.g., diazinon) – applied as a pour‑on or spray; follow label‑specified concentration, usually 0.5 ml per kg body weight.
- Synthetic pyrethroids (e.g., deltamethrin) – administered as a pour‑on; dosage typically 0.2 ml per kg.
- Macrocyclic lactones (e.g., ivermectin) – given subcutaneously or orally; dosage 0.2 mg/kg for systemic control.
If chemical resistance is a concern, integrate non‑chemical measures:
- Neem oil or eucalyptus oil diluted 1 % in water, applied as a spray.
- Diatomaceous earth spread on bedding, replacing it weekly.
Apply the chosen product to the entire fleece, ensuring coverage of the skin and wool. For pour‑on formulations, part the wool in sections and rub the solution into the skin. Repeat treatment after 7–10 days to eliminate newly hatched mites, as most products do not affect eggs.
Monitor the flock for adverse reactions during and after treatment. Observe for signs of toxicity such as excessive salivation, tremors, or respiratory distress. If any occur, discontinue use and seek veterinary assistance.
Implement preventive strategies to reduce future outbreaks:
- Maintain clean, dry housing; remove soiled bedding regularly.
- Rotate pastures and avoid overcrowding.
- Conduct routine health checks every 4–6 weeks, focusing on skin condition.
- Apply a low‑dose acaricide prophylactically at the start of the grazing season, adhering to withdrawal periods for meat and milk.
Record each treatment, including date, product, dosage, and observed efficacy, to track trends and adjust protocols as needed. Consistent documentation supports early detection and informed decision‑making for herd health.