| parasites of ovis canadensis canadensis in montana, with a checklist of the internal and external parasites of the rocky mountain bighorn sheep in north america. | | 1967 | 6066758 |
| muellerius capillaris (mueller, 1889) (nematoda: protostrongylidae): an unusual finding in rocky mountain bighorn sheep (ovis canadensis canadensis shaw) in south dakota. | lungs and fecal samples from nine hunter-killed rocky mountain bighorn sheep were examined for lungworms. all samples contained adults and/or larvae of muellerius capillaris (mueller, 1889). protostrongylus spp., the lungworms commonly reported from bighorn sheep, were not present in any samples. larvae of m. capillaris bear a spine on the dorsal side of the posterior end and are shorter than dorsal-spined larvae of other lungworms recorded from north american ungulates. larvae similar in shape ... | 1984 | 6530714 |
| sex- and age-specific lungworm infection in rocky mountain bighorn sheep during winter. | sex- and age-specific fecal lungworm (protostrongylus spp.) larvae concentrations in rocky mountain bighorn sheep (ovis canadensis canadensis) from the cinnabar winter range in southwestern montana were determined. all 228 fecal samples collected from bighorn sheep of known sex and age class from november to april, 1984 to 1987 contained first-stage lungworm larvae. fecal lungworm concentrations of ewes and rams declined significantly from late fall through early spring, whereas number of lungwo ... | 1993 | 8445795 |
| use of fenbendazole for long-term control of protostrongylid lungworms in free-ranging rocky mountain bighorn sheep. | in an effort to control protostrongylus spp. in a rocky mountain bighorn sheep herd (ovis canadensis canadensis) of approximately 30 animals, fenbendazole-medicated salt was placed on the stillwater bighorn winter range in southcentral montana (usa) for four consecutive winters, 1990 to 1993. sheep of all age and sex classes were observed using the medicated salt throughout the study period. prevalence and average number of lungworm larvae per gram of bighorn feces declined significantly (p < 0. ... | 1997 | 9131579 |
| comparison of three fecal steroid metabolites for pregnancy detection used with single sampling in bighorn sheep (ovis canadensis). | we conpared three fecal steroid metabolite assays for their usefulness in detecting pregnalcy among free-ranging rocky mountain bighorn sheep (ovis canadensis canadensis) from bighorn canyon national recreation area, wyoming and montana (usa) and captive bighorn ewes at zoomontana in billings, montana. fecal samples were collected from 11 free-ranging, radio-collared bighorn ewes in late january-may 2001 and from 20 free-ranging, radio-collared ewes in late march to mid-may 2002. free-ranging ew ... | 2004 | 15362827 |