ATTRA Publications on Sustainable Agriculture Tipsheet: Organic Management of Internal and External Livestock Parasites
Livestock parasites are present on our farms. They have many attributes that allow them to survive difficult environments and seasons, and it is literally impossible to completely eradicate them. When parasite numbers are too high for the host animals’ immune systems to control, we will observe signs of disease, including weight loss, appetite loss, depression, weakness, and, if not treated, death.