| prevalence of gastrointestinal parasitism in oklahoma swine. | the prevalence of swine gastrointestinal parasites was determined from all listed large swine operations (28) and a geographically representative sample (70) of the population of small hog farm operations in oklahoma. fecal samples (n = 975) were collected from 98 farms. from the 98 farms, parasites were recovered in pig feces as follows: ascaris, 53.0%, strongyles, 53.1%, trichuris, 35.7%, spirurids, 6.1%, strongyloides, 19.4%, coccidia, 57.1%, and balantidium, 55.1%. a higher percentage (16.5% ... | 1984 | 6524737 |