Psoroptes ovis, calves, control with ivermectin, dosages and routes of administration; effect on Bovicola bovis; Otobius megnini not affected

Strongylus vulgaris, ponies (exper.), diethylcarbamazine did not prevent clinical or pathological changes due to migrating larvae, fewer adults recovered at necropsy from treated vs. untreated ponies

Parafilaria bovicola, field survey of insect vectors collected from cattle, bleeding-point on cows and prepatent period studies, experimental infection of laboratory-raised Musca autumnalis with third-stage larvae, transmission of third-stage larvae to calves (clinical and pathologic findings)

Sarcocystis suicanis, Georgia isolate, pigs (exper.), pathology, reduced growth rate of host

Anaplasma marginale, morphologic characteristics of colonies in Dermacentor andersoni midgut epithelial cells

intestinal parasites, dogs, prevalence, sex of host and neutering procedure, age of host, mixed infections, diagnosis by fecal examination

Parafilaria bovicola, cattle, epizootiology, results of questionnaire survey among cattle owners revealed that (i) condemnation losses due to parasite were overrepresented among animals that came from herds held on pasture the previous year, as opposed to those from farms with indoor cattle management only; (ii) statistically significant difference between affected and nonaffected herds with respect to age groups; and (iii) frequency of lesions showed seasonal trend: Sweden

Cytauxzoon felis, susceptibilities of (i) domestic cats to inoculation with infected bobcat blood and ground tissues; (ii) domestic cats to subinoculation with blood from cats having received bobcat blood; (iii) inoculated cats to subsequent challenge exposure with deep-frozen virulent inoculum of domestic cat origin; and (iv) eastern bobcat to reinoculation with various doses of virulent Cytauxzoon inoculum of domestic cat origin; additional experiments to determine if piroplasm levels in bobcats and domestic cats could be raised to maximize chances for further transmission of Cytauxzoon to domestic cats

Leishmania donovani, amastigotes from dog marrow macrophages, ultrastructure

Strongylus vulgaris, migrating larvae in pony foals, fenbendazole in controlled tests