For the parasite, benefits include increased fecundity due to greater allocation of resources toward mating and producing more eggs rather than defending nests, incubating eggs, and feeding young.

A dual-purpose chicken — more on that later — that needs less water and feed, grows faster and fatter and lays more eggs. A chicken that is more resistant to disease and costs less to raise ...

reducing the risk of parasite infestations and other infections. The opportunity to forage can increase egg production and ...

KASHIHARA, Nara Prefecture--Denizens of the Asuka Period (592-710) feasted on pork and may have done so routinely, archaeologists deduced from parasite eggs excavated from a toilet structure found ...