Trichostrongylid egg output of dairy cows.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology*; D010270:Parasite Egg Count / Q000662:veterinary*; D012621:Seasons; D014251:Trichostrongyloidea / Q000302:isolation & purification*; D014252:Trichostrongyloidiasis / Q000469:parasitology / Q000662:veterinary*