Lice infestations cause significant welfare discomfort in goats, particularly in winter. This guide covers recognition, welfare, and treatment.
Key Facts
Both sucking and biting lice infest goats causing pruritus and coat damage
Heavy infestations cause anaemia from blood loss (sucking lice) and welfare distress
Goats show rubbing, scratching, hair loss, and a rough, unhealthy appearance
Lice populations peak in winter when goats are housed and in poor condition
Treatment with appropriate licensed products eliminates lice effectively
Body condition monitoring identifies goats at higher risk of heavy burdens
Welfare Considerations and Management
Welfare-centred lice management requires appropriate treatment of all animals in a group simultaneously to prevent reinfestation. Ivermectin (injection or pour-on) is effective against sucking lice; pour-on formulations with synthetic pyrethroids control both biting and sucking species. Treatment in late autumn before housing reduces winter burden. Improving nutrition, ventilation, and reducing stocking density lowers infestation risk. Checking incoming animals before introduction prevents spread to uninfested groups.
What You Can Do
Treat all goats in a group simultaneously to prevent reinfestation from untreated animals
Time treatment in autumn before housing to reduce winter welfare impact
Improve nutrition and body condition to reduce susceptibility to heavy louse burdens
Inspect incoming goats carefully and treat before introducing them to existing herds