I have raised goats for many years and have not had this much trouble from a parasite, ever!
I Lost my Dory to the Famous Evil Haemonchus Contortus ( Ha-mon-cuss con-tortoise) = is a gastrointestinal blood sucking worm that can cause severe anemia, dehydration, loss of blood, diarrhea and internal fluid accumulation. Environmental factors contribute greatly to increased numbers of Barber Pole and when you add in the increased resistance build-up to wormers as a result of extreme over-use, it results in a lot of illness and deaths. Barber Pole worms are long and round – not that you will ever see them expelled in the fecal matter. These worms are more deadly in the L3, L4 and L5 life stages. The adults live in the abomasum of goats where they feed on blood. Adult worms are attached to abomasal mucosa and feed on the blood. This parasite is responsible for anemia, bottle jaw, and death of infected sheep and goats, mainly during summer months in warm, humid climates.
I will start with Preventative Measures we take to assure this parasite does not infest our herd.