ThePigSite Pig Health
Internal Parasites(490) These must all use nutrients from the host to multiply and survive. They are found in the digestive tract, the kidneys, liver, lungs or the blood stream. There are four groups; nematodes (roundworms), thorny-headed worms, tapeworms and protozoa. (Fig.11-1).
The location of the different worms are shown in Fig.11-2)
The sites where the different parasites are found
Controlling parasites requires an understanding of their life cycle. Procedures can then be adopted that together with anthelmintics, break this cycle and thus prevent re-infection. There are two types of life cycle, a direct one and an indirect one.