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Abstract

The influence of breed on the susceptibility of Brazilian cattle to parasitic infection is briefly reviewed, with reference to ticks (Boophilus microplus), gastrointestinal parasites (e.g. Cooperia) and Dermatobia hominis. Zebu and zebu crossbred cattle show the greatest resistance to tick...

Author(s)
Penna, V. M.
Citation
Informe Agropecuário (Belo Horizonte), 1992, 16, 177, pp 40-44
Abstract

Fortnightly quantitative analysis of rectal faecal samples for the presence of nematode eggs was carried out from May 1992 to April 1993 on 11 N'dama and 11 Zebu cattle in The Gambia. At week -1 the animals were treated with acaricide. This was repeated at week 11. An anthelmintic was given at week ...

Author(s)
Mattioli, R. C.; Zinsstag, J.; Clifford, D. J.; Cassama, M.; Kora, S.
Citation
Tropicultura, 1995, 13, 1, pp 19-21
Abstract

A herd of 162 Jersey cattle from the Resende district, Rio de Janeiro State, Brazil, was examined monthly for ecto- and endoparasites between September 1990 and May 1991. The only tick found was Boophilus microplus, which showed a high prevalence of infestation on the udder, perineum and inner...

Author(s)
Serra-Freire, N. M.; Cavalcanti, P. L.; Gazeta, G. S.; Nogueira, E. de O.; Rocha, G. C. da; Maduro, C. H.
Citation
Revista Universidade Rural. Serie Ciencias da Vida, 1995, 17, 1, pp 75-81
Abstract

Two new formulations of ivermectin, Ivomec pour-on used for cattle in a dose of 1 ml/10 kg b.w. and Ivomec bolus administered by mouth for sheep in a dose of 0.5 bolus for each 25 kg b.w. (10 mg/50 kg b.w.), were tested for control of natural infestation by gastrointestinal nematode parasites in ...

Author(s)
Abdel-Rahman, M. S.; El-Bahy, M. M.; El-Bahy, N. M.; Ramadan, E. I.
Citation
Veterinary Medical Journal Giza, 1996, 44, 4, pp 637-656
Abstract

The author describes the important parasitic diseases present in the Extremadura region of Spain, with particular reference to their epidemiology and prevention. The parasites described comprise gastrointestinal nematodes (Cooperia, Haemonchus, Trichostrongylus); lungworms (Dictyocaulus viviparus); ...

Author(s)
García Cuadrado, N.
Publisher
Junta de Extremadura, Mérida, Spain
Citation
Vacuno de carne en extensivo. Curso celebrado en el Servicio de Investigacion y Desarrollo Tecnologico de Extramadura del 19 al 30 de noviembre de 1991., 1993, pp 303-330
Abstract

Genetic parameters for growth, parasite resistance and heat tolerance in zebu-cross cattle in a tropical environment were estimated by restricted max. likelihood procedures using various forms of an animal model. Estimates of h2 for direct additive genetic effects for live weights at birth,...

Author(s)
Mackinnon, M. J.; Meyer, K.; Hetzel, D. J. S.
Citation
Livestock Production Science, 1991, 27, 2/3, pp 105-122
Abstract

The separate and combined effects of ecto- and endoparasites (Boophilus microplus, Haematobia irritans, H. irritans exigua, and Oesophagostomum radiatum, Cooperia spp. and Haemonchus placei) on the inter-relationships between metabolism, body growth rate, onset of puberty and mating performance at...

Author(s)
O'Kelly, J. C.; Post, T. B.; Bryan, R. P.
Citation
Animal Reproduction Science, 1988, 16, 3-4, pp 177-189

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