Edema can be caused by several factors, including hypoproteinemia or low blood protein in the animal, which is commonly related to the large stomach worm (barber pole worm, Haemonchus contortus); malnutrition and stress of pregnancy; lactation; and adverse weather conditions.
Anemia likewise can be caused by infestation with the barber pole worm or any other blood-sucking parasites (e.g., lice, mites, keds). Other conditions, including metabolic disorders and malnutrition, can also cause anemia.
Weight loss is caused by a variety of diseases such as Johne’s disease, infestation with internal parasites, and a lack of sufficient nutrients. When these symptoms are present in goats, a fecal egg count should be conducted to rule out internal parasites.