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Abstract

Infection with digestive-tract strongyles was monitored in beef cattle on 2 farms of the Pampas of Argentina from 1981 to 1987. The parasitological parameters were the numbers of worms harboured by tracer calves grazed for 25 days on pastures and the nematode faecal egg output of cattle grazed...

Author(s)
Suarez, V. H.; Cabaret, J.
Citation
Preventive Veterinary Medicine, 1991, 11, 1, pp 1-8
Abstract

The epidemiology of Ostertagia ostertagi as primarily defined in weaner-yearling cattle in the USA and other parts of the world are reviewed and some of the factors which operate in population changes of the parasite through different age classes are considered under the headings: epidemiology in...

Author(s)
Williams, J. C.; Knox, J. W.; Loyacano, A. F.
Citation
Veterinary Parasitology, 1993, 46, 1-4, pp 313-324
Abstract

The seasonal population trends of cattle nematodes in tracer calves are described from 1981 to 1987, from studies conducted in the Western Pampas, Argentina. Successive worm-free calves were grazed with growing beef cattle for 20-30 days at 6 week intervals and then slaughtered for nematode counts...

Author(s)
Suarez, V. H.
Citation
International Journal for Parasitology, 1990, 20, 8, pp 1031-1036
Abstract

T. vitulorum was first identified in Uruguay in 1980, near the border with Brazil. An outbreak of the helminthosis in calves was confirmed for the first time in southern Uruguay in July 1990. The spread of the parasite from northern Uruguay was attributed to large cattle movements from northern...

Author(s)
Ramos, D.
Citation
Veterinaria (Montevideo), 1991, 27, 111, pp 11-17
Abstract

The trial was carried out in a dairy farm in Valdivia, southern Chile, from April to July 1989. Of 40 grazing heifers weighing around 248 kg 10 were injected s.c. with 7.5 mg/kg levamisole, 10 received 7.5 mg/kg spot-on levamisole, 10 were drenched with 8 mg/kg, and 10 were untreated controls....

Author(s)
Sievers, G.; Guzmán, O.
Citation
Archivos de Medicina Veterinaria, 1991, 23, 1, pp 41-48
Abstract

Author(s)
Eddi, C.; Caracostantógolo, J.; Balbi, A.; Schapiro, J.; Noaco, A.
Citation
Revista de Medicina Veterinaria (Buenos Aires), 1991, 72, 1, pp 7-9
Abstract

To study the occurrence of helminth parasitism in buffaloes, faecal samples were collected weekly in 24 pregnant females from 2 months before term until parturition. Samples from the dams and calves were collected 3 times per week from parturition until 42 days postpartum, and weekly until calves...

Author(s)
Barbosa, M. A.; Oliveira, M. R. de; Corrêa, F. M.
Citation
Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, 1991, 43, 6, pp 517-523
Abstract

Helminth infections of 30 Gir x Friesen cattle of differing age groups were studied between June 1981 and December 1983 around Cerrado, Goias State, Brazil. The animals were infected with Cooperia, Haemonchus, Oesophagostomum and Trichostrongylus, diagnosed by coproculture. The cattle were divided...

Author(s)
Carneiro, R. J.; Calil, F.; Pereira, E.; Lima, W. dos Santos
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 1987, 39, 3, pp 415-422
Abstract

In a dairy cattle herd (115 cattle) located at São Carlos, State of São Paulo, Brazil, 5 cases of ulcerative dermatitis were observed and the aetiological agent identified as Stephanofilaria spp. The lesions were found at the tailhead, udder, thigh and rump. The diagnosis was performed by scrapings ...

Author(s)
Novaes, A. P. de; Costa, A. J. D. S.; Barbosa, R. T.; Moreira, D. de P.; Ruzza, F. J. de
Citation
Pesquisa Agropecuária Brasileira, 1988, 23, 8, pp 927-929
Abstract

Author(s)
Fiel, C. A.; Steffan, P. E.; Vercesi, H. M.; Ambrustolo, R. R.; Catania, P.; Casaro, A. P.; Entrocasso, C. M.; Biondani, C. A.
Citation
Revista de Medicina Veterinaria (Buenos Aires), 1988, 69, 1, pp 57-64

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