Alessandro Amarante
Institution: Institute of Biosciences/UNESP/Botucatu
Ronaldo Sales
Universidade Federal do Ceará / Centro de Ciências Agrárias / Departamento de Zootecnia.
Keywords:
parasitism, illness, health
Abstract
Almost 100% of the domestic “ruminantes” allocate one or more species of parasites. This parasitism, however, doesn’t mean illness, once the animals of a group (or at least a big part of it) present good health conditions. It happens because the hosts have immunological devices which help them, most of the times, to keep the parasites population under control. Once it happens, we can guarantee that the relation host – parasite presents some balance.