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Abstract

Observations on the island of Jeju-Do off the southern tip of Korea in 1979 indicated that cattle were at risk from infection by Theileria sergenti, Babesia ovata and Anaplasma, all of which were almost certainly transmitted by Haemaphysalis longicornis Neum. Imported exotic animals were more...

Author(s)
Purnell, R. E.; Rae, M. C.
Publisher
Martinus Nijhoff Publishers, The Hague, Netherlands
Citation
Advances in the Control of Theileriosis. Proceedings of an International Conference held at the International Laboratory for Research on Animal Diseases in Nairobi, 9-13th February, 1981, 1981, pp 97-99
Abstract

Successive pairs of approximately 4-month-old Friesland bull calves, raised under worm-free conditions, were exposed to helminth infection for 14 days on dry-land Kikuyu grass pastures at 28-day to monthly intervals, on a coastal farm in a non-seasonal rainfall region of the Eastern Cape Province....

Author(s)
Horak, I. G.; Evans, U.; Purnell, R. E.
Publisher
Onderstepoort Veterinary Institute, Onderstepoort, South Africa
Citation
Onderstepoort Journal of Veterinary Research, 2004, 71, 4, pp 291-306
Abstract

Of 8 Friesian cattle infested with 20 male, 20 female and 100 nymphal I. ricinus from a pathogen free laboratory culture, 4 cattle were treated with 200 µg/kg doramectin s.c. on the neck. After 42 days the yield of engorged nymphal ticks was lower (122 total, range 25-34 per animal) than on the...

Author(s)
Gray, J. S.; Ellis, R. N. W.; Purnell, R. E.
Citation
Irish Veterinary Journal, 1996, 49, 10, pp 609-610
Abstract

Three groups of louse-free calves housed in groups of 4 were treated on day 0 with ivermectin/clorsulon or with doramectin, both at manufacturer's recommended dose rate, or acted as untreated controls. The control group were infested with Linognathus vituli on day 0 while 2 calves from each of the...

Author(s)
Titchener, R. N.; Purnell, R. E.
Citation
Veterinary Record, 1996, 139, 14, pp 345-346
Abstract

Observations on the island of Jeju-Do, 100 km off the southern tip of the Korean peninsula, indicated that cattle are at risk to a syndrome known locally as piroplasmosis, caused by Theileria sergenti, Babesia ovata and Anaplasma. All 3 parasites appear to be transmitted by Haemaphysalis...

Author(s)
Purnell, R. E.; Moon Chang Rae
Publisher
Martinus Nijhoff Publishers, The Hague, Netherlands
Citation
Advances in the control of theileriosis. Proc. Internat. Conf., 9-13 Feb. 1981, Nairobi., 1981, pp 97-99
Abstract

This review contains notes on each of the 4 Babesia spp. and 3 Theileria spp. severely pathogenic to cattle. The main sections of the review consider vaccination against bovine Babesia spp. (current vaccine and attempts to produce alternative vaccines), T. annulata and T. parva. Prospects for...

Author(s)
Purnell, R. E.
Publisher
Blackwell Scientific Publications., Oxford, UK
Citation
Vaccines against parasites. (Symposia of the British Society for Parasitology, Volume 18, London, 26 Oct. 1979.), 1980, pp 25-55
Abstract

This review is intended to briefly introduce the various species of Babesia, to sketch their possible geographical distributions and to delineate gaps in knowledge about them. Babesia bovis, B. bigemina, B. divergens, B. (Piroplasma) jakimovi and B. major occurring in cattle, B. motasi and B. ovis...

Author(s)
Purnell, R. E.
Publisher
Academic Press, Inc., New York, USA & London, UK
Citation
Babesiosis. (Internat. Conf. on malaria and babesiosis, Mexico City, 30 Apr. -- 4 May 1979)., 1981, pp 25-63
Abstract

Stabilate 2306 of Theileria lawrencei was isolated from Rhipicephalus appendiculatus which had fed on 3 Boran cattle which had grazed in a paddock frequented by buffaloes. 12 mixed breed cattle aged between 6 months and 2 years were inoculated with stabilate 2306 along with long-acting...

Author(s)
Chumo, R. S. C.; Taracha, E.; Morzaria, S. P.; Irvin, A. D.; Voigt, W. P.; Purnell, R. E.
Publisher
International Laboratory for Research on Animal Diseases, P.O. Box 30709, Nairobi, Kenya
Citation
Immunization against theileriosis in Africa. Proceedings of a Joint Workshop, 1-5 October 1984, Nairobi, Kenya, ILRAD & FAO., 1985, pp 79-81
Abstract

Principal component analysis of simple pathological parameters of calves inoculated with Babesia divergens from England, Eire, Scotland and Wales revealed differences in pathogenicity between the isolates.

Author(s)
Purnell, R. E.; Brocklesby, D. W.; Kitchenham, B. A.; Young, E. R.
Publisher
University Press., Edinburgh, UK
Citation
Tick-borne diseases and their vectors. (Proc. Int. Conf., Edinburgh, 27 Sept. - 1 Oct. 1976)., 1978, pp 386-388
Abstract

The susceptibility to morantel of a strain of O. ostertagi after 9 years of continuous use of morantel tartrate by Paratect bolus at a Friesian cattle farm in Viglunda, Sweden, was investigated. This was compared with a local strain of O. ostertagi from a nearby farm where no anthelmintics had been ...

Author(s)
Tornquist, M.; Purnell, R. E.; Tolling, S. T.
Citation
Veterinary Record, 1991, 129, 21, pp 472

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