A Survey on Dairy Cow Helminths by Fecal Examination in Hokkaido

Abstract

Fecal examination was performed in 1, 129 Holstein dairy cows on 49 farms in 10 areas in Hokkaido to detect helminths. Eggs of gastrointestinal nematodes were found in 927 cows (82.1%)(averaging 24.2 eggs/5g feces). Parasitic nematode in were feces fewer in cows 6-8 years old than in those of any other age group. There were large differences in the postive rate and average nematode egg count among areas, farms and cows. Lungworms were found in feces from 10 adult cows suggesting that their infection might be latent. Fasciola and Paramphistomum were present in a few cows. Tapeworms were recorded in 5% of all the cows.