Genetic variation in parasite burdens, as reflected by faecal worm egg counts, was demonstrated in the more temperate ... There is strong evidence that resistance of sheep to external and internal parasites is heritable, and may be improved by ... Consistent natural challenge by internal helminthic parasites of sheep is complicated by the relatively dry conditions in most ... Natural challenges may be used to select sheep for resistance to internal parasites under conditions where sufficient natural ...
BACKGROUND: Balantidium coli, a ciliated protozoan parasite that infects primates and pigs, and is the largest protozoan to ... B. coli, a ciliated protozoan parasite, infects primates and pigs, and is the largest protozoan to infect humans. Pigs may be ...
There is strong evidence that resistance of sheep to external and internal parasites is heritable, and may be improved by ...
... and worms and other parasites (18 - 7%) comprised the most common presentations at the clinic. At the hospital, the most common ...