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Abstract

During 3 experimental periods each of one year (from 1972 to 1976) the numbers of gastrointestinal nematodes in 2 groups of calves, reared on the savanna of Mato Grosso, Brazil, were assessed by faecal and post-mortem examinations. One group of calves was naturally infected (untreated) and the...

Author(s)
Melo, H. J. H. de; Bianchin, I.
Citation
Pesquisa Agropecuaria Brasileira, 1977, 12, pp 205-216
Abstract

Faecal examination and monthly autopsy of 48 male calves (zebu X holland) from May to October showed 30 to have Ostertagia infection (97.4% were O. ostertagia and 2.6% O. lyrata). Highest incidence was in September. Brief morphometric details are given of the 2 species.

Author(s)
Bianchin, I.
Citation
Pesquisa Agropecuaria Brasileira, 1978, 13, 4, pp 57-61
Abstract

The world distribution of Boophilus microplus (Can.) is shown on a map and its habits and importance as a vector of Babesia and Anaplasma are briefly reviewed. The occurrence of the tick in Brazil and the factors leading to periodic epidemics among cattle there are outlined and the costs of the...

Author(s)
Beck, A. A. H.
Publisher
EMBRAPA/CNPGC., Campo Grande, Brazil
Citation
De Melo, H. J. H. : Annals of the first national seminar on bovine parasitoses, 23 to 28 July 1979.: Anais do 1o seminario nacional sobre parasitoses dos bovinos, 23 a 28 de julho de 1979., 1979, pp 191-205
Abstract

The biology of Boophilus microplus (Can.) attacking cattle is reviewed from the literature with special reference to the duration of the various stages in Brazil, host immunity and the development of resistance in populations of the tick in Brazil and elsewhere to a wide range of chemical compounds.

Author(s)
Thiesen, W. L.
Publisher
EMBRAPA/CNPGC., Campo Grande, Brazil
Citation
De Melo, H. J. H. : Annals of the first national seminar on bovine parasitoses, 23 to 28 July 1979.: Anais do 1o seminario nacional sobre parasitoses dos bovinos, 23 a 28 de julho de 1979., 1979, pp 207-215
Abstract

The economic importance of effective control of Boophilus microplus (Can.) infesting cattle in Brazil is stressed and the reasons why ecological studies on the ticks are still needed there are outlined. These include the need to be able to differentiate races of the tick from different areas of the ...

Author(s)
Evans, D. E.
Publisher
EMBRAPA/CNPGC., Campo Grande, Brazil
Citation
De Melo, H. J. H. : Annals of the first national seminar on bovine parasitoses, 23 to 28 July 1979.: Anais do 1o seminario nacional sobre parasitoses dos bovinos, 23 a 28 de julho de 1979., 1979, pp 217-229
Abstract

The failure to date to achieve satisfactory control of Boophilus microplus (Can.) on cattle in Brazil is outlined and the reasons for this, which include under-dosing with acaricides and the consequent rapid build-up of resistance in the ticks, are discussed. The need for an official and obligatory ...

Author(s)
Arteche, C. C. P.
Publisher
EMBRAPA/CNPGC., Campo Grande, Brazil
Citation
De Melo, H. J. H. : Annals of the first national seminar on bovine parasitoses, 23 to 28 July 1979.: Anais do 1o seminario nacional sobre parasitoses dos bovinos, 23 a 28 de julho de 1979., 1979, pp 231-249
Abstract

The quantities of chemical acaricides used in Rio Grande do Sul State, Brazil, for the control of Boophilus microplus (Can.) on cattle are given and compared with the usage in Brazil as a whole. The costs of such products are also detailed. From the information available it appears that Rio Grande...

Author(s)
Silva, N. R. S. da
Publisher
EMBRAPA/CNPGC., Campo Grande, Brazil
Citation
De Melo, H. J. H. : Annals of the first national seminar on bovine parasitoses, 23 to 28 July 1979.: Anais do 1o seminario nacional sobre parasitoses dos bovinos, 23 a 28 de julho de 1979., 1979, pp 251-256
Abstract

The condition caused in cattle by infection with Babesia and Anaplasma, alone or in combination, is known in Brazil as 'tristeza'. The occurrence of these infections in Brazil is reviewed from the literature, together with the studies that implicated Boophilus spp. as vectors.ADDITIONAL ABSTRACT:A...

Author(s)
Serra Freire, N. M. da
Publisher
EMBRAPA/CNPGC., Campo Grande, Brazil
Citation
De Melo, H. J. H. : Annals of the first national seminar on bovine parasitoses, 23 to 28 July 1979.: Anais do 1o seminario nacional sobre parasitoses dos bovinos, 23 a 28 de julho de 1979., 1979, pp 271-278
Abstract

The author reviews the characteristics of the transmission by Boophilus spp. of Babesia spp. and Anaplasma marginale to cattle, with special reference to Brazil, and describes and discusses the epidemiology and symptoms of the disease syndrome, known there as 'tristeza'.ADDITIONAL ABSTRACT:A review ...

Author(s)
Massard, C. L.
Publisher
EMBRAPA/CNPGC., Campo Grande, Brazil
Citation
De Melo, H. J. H. : Annals of the first national seminar on bovine parasitoses, 23 to 28 July 1979.: Anais do 1o seminario nacional sobre parasitoses dos bovinos, 23 a 28 de julho de 1979., 1979, pp 279-283
Abstract

The control of babesiasis and anaplasmosis in cattle by means of vaccines is limited by various factors. It is better to maintain a good control of ticks, and to put calves on to infected pastures as early as possible when their resistance is highest and they will become immune. In outbreaks of...

Author(s)
Vilas Novas, J. C.
Publisher
Ministerio da Agricultura., Campo Grande, MS, Brazil
Citation
Proceedings of the 1st National Seminar on bovine parasitoses, 23-28 July 1979, Campo Grande, MS, Brazil.: Anais do I Seminario Nacional sobre parasitoses dos bovinos, 23-28 de julho de 1979, Campo Grande, MS, Brasil., 1979, pp 285-291

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