Faecal for the UK, fecal for the US... I don't actually know the answer, and this seems less obvious, but I'll try suggesting it because (a) it seems logical (since as you say, coprocultură is faecal culture, not coproculture), and (b) it throws up quite a few more hits from English-language (i.e. UK/US/Austrialian etc.) sites, whichever way you spell it. As to how reliable the sites are, you can judge better than I can, I suspect.

Faecal parasitology
Formalised faecal suspensions, methanol fixed faecal smears, fixed urine specimens, formalised cyst fluid
http://www.ukneqas.org.uk/Directory/MICRO/parasite.htm

"Coccidian Eimeria spp. may or may not be debilitating but can be identified by faecal parasitology and treated with sulphonamides."
http://www.workingforwildlife.org.uk/education/squirrel.htm

"Clinical Pathology

Performs clinical testing on samples including tests such as blood
differentials, fecal parasitology testing, stone analysis, and urinalysis."
http://www.vdl.ndsu.edu/inform/dept.htm