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Abstract

Examples of Boophilus microplus (Can.) collected from calves in Queensland with patent infection by Anaplasma marginale were incubated at either 4--5, 14, 22, 27 or 37 deg C for up to 14 days. Extracts prepared from larvae, nymphs, immature females, adult males or mixtures of both sexes were...

Author(s)
Dalgliesh, R. J.; Stewart, N. P.
Citation
Australian Veterinary Journal, 1982, 58, 1, pp 24-26
Abstract

Experiments were carried out in Queensland to explore the possible relationship between cattle, Rhipicephalus sanguineus (Latr.) and Anaplasma marginale. Calves' ears were exposed to larval, nymphal and adult ticks on 8, 9 and 7 occasions, respectively. The immature ticks fed readily, but the...

Author(s)
Parker, R. J.
Citation
Australian Veterinary Journal, 1982, 58, 2, pp 47-50
Abstract

Strategic dipping and pasture spelling plus dipping were compared in Queensland with no treatment on Droughtmaster cows and their progeny over 5 years. Average monthly counts of Boophilus microplus (Can.) on the young cattle and their dams were 10 and 18, <1 and 2, and 56 and 112, for the 3 treatments, respectively. There was stable transmission of Babesia bovis, B. bigemina and Anaplasma marginale to the progeny from the untreated cows. Strategic dipping, and pasture spelling plus dipping, seriously disrupted the transmission of B. bovis, and vaccination against this parasite is recommended. Pasture spelling plus dipping also interfered with the transmission of A. marginale and B. bigemina, but vaccination against A. marginale only is warranted. At 27-29 months of age, the young cattle in the strategic dipping group had...

Author(s)
Johnston, L. A. Y.; Haydock, K. P.; Leatch, G.
Publisher
Australian Agricultural Council, Melbourne, Australia
Citation
Australian Journal of Experimental Agriculture and Animal Husbandry, 1981, 21, 110, pp 256-267
Abstract

Bos indicus-crossbred calves (groups of 180 and 124) exposed to natural Babesia bovis infection in wet and dry tropical environments in northern Queensland, Australia, were tested for antibodies using the indirect haemagglutination (IHA) test. There was evidence of maternal antibodies suggesting...

Author(s)
Kudamba, C.; Campbell, R. S. F.; Paull, N. I.; Holroyd, R. G.
Citation
Australian Veterinary Journal, 1982, 59, 4, pp 101-104
Abstract

In Australia, 386 clinical outbreaks of anaplasmosis were confirmed in Queensland south of the 22nd parallel over the period 1967 to 1976. 78% of these outbreaks occurred during autumn and winter and only 6.8% involved cattle less than one year of age compared with 54.8% for cattle more than 3...

Author(s)
Rogers, R. J.; Blight, G. W.; Knott, S. G.
Citation
Australian Veterinary Journal, 1978, 54, 3, pp 115-120
Abstract

Natural infection of calves with Anaplasma marginale was studied in 2 endemic areas of tropical northern Queensland. Infection, which was assessed by a micro-complement fixation test, occurred throughout the year but was most frequent just after the summer wet season. Up to 90.6% of cross-bred Bos...

Author(s)
Paull, N. I.; Parker, R. J.; Wilson, A. J.; Campbell, R. S. F.
Citation
Australian Veterinary Journal, 1980, 56, 6, pp 267-271
Abstract

Outbreaks of Babesia argentina, B. bigemina and Anaplasma marginale on cattle in Queensland are analysed for the period from 1966 to 1976. The 3 pathogens were responsible for 73, 6 and 21% of the outbreaks, respectively, and there was no evidence for any change in the proportion in the past 10-15...

Author(s)
Copeman, D. B.; Trueman, F.; Hall, W. T. K.
Publisher
Centre for Tropical Veterinary Medicine, University of Edinburgh., Edinburgh, UK
Citation
Tick-borne diseases and their vectors., 1978, pp 133-136
Abstract

Outbreaks caused by B. argentina, B. bigemina and A. marginale in Queensland between 1 July 1966 and 30 June 1976 were assessed. Of all outbreaks 73% were caused by B. argentina, 21% by A. marginale and 6% by B. bigemina. There is no evidence to indicate that the numbers of outbreaks have undergone ...

Author(s)
Copeman, D. B.; Trueman, F.; Hall, W. T. K.
Publisher
Centre for Tropical Veterinary Medicine., Edinburgh, UK
Citation
Tick-borne diseases and their vectors. Proceedings of an international conference, Edinburgh 1976,, 1978, pp 133-136

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