Observations on the use of Anaplasma centrale for immunization of cattle against anaplasmosis in Zimbabwe

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Authors

Turton, J.A.
Katsande, Tendai C.
Matingo, M.B.
Jorgensen, W.K.
Ushewokunze-Obatolu, U.
Dalgliesh, R.J.

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Published by the Agricultural Research Council, Onderstepoort Veterinary Institute

Abstract

A total of 93 Bos taurus cattle was used in pen trials to compare vaccine stocks of Anaplasma centrale from South Africa and Australia (which stock came from South Africa in 1934) in protecting against three virulent field isolates from clinical Anaplasma marginale infections. In addition, field observations were made on the use of a vaccine, prepared from the Australian stock, in over 9553 cattle of mixed age and breeds on 16 co-operator farms and at one communal dip. The results of the pen trials indicated that the two vaccine stocks were comparable and that neither provided adequate protection against two of the three isolates of A. marginale. The field observations indicated that the vaccine was highly infective and produced mild reactions in most recipient cattle, and that users were generally satisfied with the vaccine. These somewhat conflicting results are discussed in the context of observations in Australia and future vaccination against anaplasmosis in Zimbabwe.

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The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat X Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.

Keywords

Veterinary medicine, Anaplasmosis, Anaplasma centrale, Anaplasma marginale, Vaccine

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Citation

Turton, JA, Katsande, TC, Matingo, MB, Jorgensen, WK, Ushewokunze-Obatolu, U & Dalgliesh, RJ 1998, 'Observations on the use of Anaplasma centrale for immunization of cattle against anaplasmosis in Zimbabwe’. Onderstepoort Journal of Veterinary Research, vol. 65, no. 2, pp. 81-86.