| a survey in louisiana of intestinal helminths of ponies with little exposure to anthelmintics. | ponies reared with minimal or no exposure to anthelmintics were surveyed for intestinal helminths in order to estimate prevalence and intensity of parasite populations unaltered by frequent exposure to anthelmintics. thirty-seven mixed breed ponies of varying ages were examined. thirty-four species of nematodes and 2 species of cestodes were found. twenty-four of the nematode species (including 1 new species) were in the subfamily cyathostominae (small strongyles). eighty-seven percent of the to ... | 1986 | 3819969 |