Abstract:
Three cattle, which had been experimentally infected with Theileria parva lawrencei and maintained
as carriers of the infection, were each infested simultaneously with clean nymphal Rhipicephalus appendiculatus
and Rhipicephalus zambeziensis in ear bags on separate ears. After moulting, the ensuing adult
ticks were fed on rabbits for 4 days and their salivary glands were examined for infective stages of the
parasite. Microscopic examination revealed significantly higher infection rates in the salivary glands of
R. zambeziensis than in R. appendiculatus which may indicate an increased vector efficiency of R.
zambeziensis for T. p. lawrencei.
