Changes

==Life Cycle==

==Life Cycle==

''Cooperia spp.'' have a typical trichostrongylid life cycle with the exception that they do not feed on blood. Once ingested the larvae penetrate the mucosa of the proximal third of the small intestine where they will remain into adulthood.

''Cooperia spp.'' have a typical trichostrongylid life cycle with the exception that they do not feed on blood. Once ingested the larvae penetrate the mucosa of the proximal third of the small intestine where they will remain into adulthood. Hyobiosis plays a major role in the life cycle of these species as with other trichostrongylids with the emergence of L4 larvae in the spring following infection the previous year.

==Epidemiology==

==Epidemiology==