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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
immunology and microbiology
The effect of the brown ear-tick Rhipicephalus appendiculatus on the growth of Sanga and European Breed cattle
Veterinary Parasitology, Volume 30, No. 2, Year 1988
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Description
The effects of larvae, nymphs and adults of the brown ear-tick Rhipicephalus appendiculatus on the growth of Bos indicus x B. taurus (Sanga) steers and on B. taurus steers and heifers was measured by exposing groups, maintained in the same pastures, to different levels of tick challenge. Larvae and nymphs had no significant effect on liveweight gains, but adults had a large effect. Each engorging female tick counted was associated with a loss of 4 g. Their effect on the Sanga cattle was minimised by host resistance which severely limited the numbers of ticks feeding on them. The B. taurus animals were severely affected and suffered extensive ear damage. Both breeds were subjected to screw-worm fly (Chrysomya bezziana) strike in the lesions caused by heavy tick infestations, but the B. taurus animals were much more prone to attack. The results provide a basis for calculating losses in production caused by this species of tick which is widespread in Africa. © 1988.
Authors & Co-Authors
Norval, R. Andrew I.
Zimbabwe, Harare
Veterinary Research Laboratory Zimbabwe
Sutherst, Robert Wilfred
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Kurki, J.
Zimbabwe, Harare
Veterinary Research Laboratory Zimbabwe
Gibson, J. D.
Zimbabwe, Harare
Veterinary Research Laboratory Zimbabwe
Kerr, John D.
Australia, North Ryde
Csiro Mathematical and Information Sciences
Statistics
Citations: 129
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/0304-4017(88)90162-8
ISSN:
03044017
Participants Gender
Female