Sarcocystis cruzi, newborn calves (exper.), correlation of development of Sarcocystis with the resulting lesions

Rhipicephalus sanguineus and Ctenocephalides spp. on kennelled dogs, seasonal prevalence and mean numbers and percentages of immature and adult ticks and of fleas recovered from various sites on dogs

Psoroptes ovis, cattle (exper.), residual effectiveness of ivermectin injections against establishment of scabies, comparison with toxaphene dip

Rhipicephalus zambeziensis and R. appendiculatus from Zimbabwe, ecology of species compared with reference to host records, geographical distribution, physiography, climate, and seasonal occurrence, sex and stage of recovered parasites; additional review information on hosts and distribution of R. zambeziensis throughout its range in Africa

helminth parasites and Oestrus ovis in Karakul sheep, seasonal incidence determined by slaughter of successive groups of tracer lambs each exposed on pasture for 33 days, recommended deworming programme, importance of moving sheep to new pastures immediately after deworming

nematodes of catfish, seasonal variation, measurements of Paracamallanus cyathopharynx and Procamallanus laeviconchus compared with those reported from other fish species recovered elsewhere in Africa

gastrointestinal helminths in calves, field conditions, febantel, no activity against Moniezia benedeni, no signs of intoxication

nematodes of ponies, efficacy of oxibendazole in paste formulation, 1-group critical test compared with 2-group control test

Babesia bovis, nonviable tissue culture-derived antigens as vaccine in cattle, comparison with premunition

Dermacentor andersoni, transmission of Anaplasma marginale to splenectomized calves by injection of gut homogenates from incubated vs. non-incubated adult ticks