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Abstract

The economic importance of diseases caused by these pathogens, and methods to control them using drugs, vaccines and vector control are discussed.

Author(s)
Vos, A. J. de
Publisher
International Laboratory for Research on Animal Diseases, Nairobi, Kenya
Citation
Recent developments in the control of anaplasmosis, babesiosis and cowdriosis, 1992, pp 3-12
Abstract

49 purebred Bos indicus and 48 B. indicus × B. taurus (50%, F1 generation) 24-month-old steers were kept in the same paddock with cattle artificially infected with a virulent isolate of A. marginale and B. microplus. The cattle were seronegative for A. marginale at the start of the trial but had...

Author(s)
Bock, R. E.; Kingston, T. G.; Vos, A. J. de
Citation
Australian Veterinary Journal, 1999, 77, 11, pp 748-751
Abstract

The distribution and prevalence of Theileria buffeli in Queensland cattle were investigated using serum samples and blood films collected primarily for brucellosis surveillance and tick fever diagnosis. Sera collected in 1987 and 1988 from 8654 cattle from 357 farms were examined by an indirect...

Author(s)
Stewart, N. P.; Standfast, N. F.; Baldock, F. C.; Reid, D. J.; Vos, A. J. de
Citation
Australian Veterinary Journal, 1992, 69, 3, pp 59-61
Abstract

The innate resistance of naive cattle, cattle × zebu and zebu to virulent B. bovis, B. bigemina and A. marginale was investigated. Groups of 10, pure zebu, F1 zebu cross (1/2 zebu), zebu cross (1/4 zebu) and pure cattle steers were infected with virulent B. bovis, B. bigemina and A. marginale....

Author(s)
Bock, R. E.; Vos, A. J. de; Kingston, T. G.; McLellan, D. J.
Citation
Australian Veterinary Journal, 1997, 75, 5, pp 337-340
Abstract

Blood containing either B. bovis, B. bigemina or A. centrale was mixed with an equal volume of 3smallcap˜M glycerol in phosphate-buffered saline with or without glucose and then stored in liquid nitrogen for 2-30 days. After being thawed, the parasitized blood was subjected to various procedures,...

Author(s)
Jorgensen, W. K.; Vos, A. J. de; Dalgliesh, R. J.
Citation
Veterinary Parasitology, 1989, 31, 3-4, pp 243-251
Abstract

In five experiments undertaken in splenectomized calves it was found that T. buffeli infections depressed the parasitaemias of superimposed B. bovis and A. centrale infections, but not B. bigemina infections. The course of A. centrale infections did not appear to be affected by a concurrent ...

Author(s)
Stewart, N. P.; Vos, A. J. de; Standfast, N. F.
Citation
Research in Veterinary Science, 1990, 49, 3, pp 346-348
Abstract

Forty susceptible yearling steers were inoculated s/c with A. marginale and injected s/c with imidocarb dipropionate at 3 mg/kg body weight 14 days before infection, on the day of infection or 14 days after infection or given no imidocarb. All groups were challenged with A. marginale 224 days after ...

Author(s)
Vos, A. J. de; McGregor, W.; Stewart, N. P.; Dalgliesh, R. J.; Barry, D. N.
Citation
Australian Veterinary Journal, 1987, 64, 3, pp 83-85
Abstract

The experiments were carried out to establish whether administration of tetracycline or inoculation of cell-free supernatant derived from in vitro Babesia cultures can prevent adverse reactions to live Babesia and Anaplasma vaccines in cattle. 35 yearling steers allocated to 5 groups of 7 were...

Author(s)
Jorgensen, W. K.; Bock, R. E.; Kingston, T. G.; Vos, A. J. de; Waldron, S. J.
Citation
Australian Veterinary Journal, 1993, 70, 1, pp 35-36
Abstract

In this discussion of the control or prevention of tick-transmitted diseases of cattle in South Africa, with special reference to heartwater, [caused by Cowdria ruminantium] redwater [caused by Babesia] and anaplasmosis [caused by Anaplasma], the authors make the distinction between areas where the ...

Author(s)
Howell, C. J.; Vos, A. J. de; Bezuidenhout, J. D.; Potgieter, F. T.; Barrowman, P. R.
Publisher
Tick Research Unit., Grahamstown, South Africa
Citation
Tick biology and control. Proceedings of an International Conference held from 27-29 January 1981, under the auspices of the Tick Research Unit, Rhodes University, Grahamstown, South Africa., 1981, pp 61-66
Abstract

Contamination of a batch of tick fever (babesiosis and anaplasmosis) vaccine with bovine leukosis virus (BLV) was detected when a herd, in the final stages of an enzootic bovine leukosis (EBL) accreditation programme, developed a large number of seropositive cattle following use of tick fever...

Author(s)
Rogers, R. J.; Dimmock, C. K.; Vos, A. J. de; Rodwell, B. J.
Citation
Australian Veterinary Journal, 1988, 65, 9, pp 285-287

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