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VetMed Resource

Veterinary information to support practice, based on evidence and continuing education

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Abstract

An experiment was carried out to study the role of the ruminal function in the establishment of Ostertagia ostertagi in newborn calves. Three groups of calves were fed either milk only (groups A and C), or hay and concentrate in addition to milk (group B) from birth. At the time of infection,...

Author(s)
Satrija, F.; Nansen, P.; Christensen, C. M.
Citation
Research in Veterinary Science, 1991, 51, 3, pp 344-346
Abstract

Immunity to O. ostertagi infections in calves develops slowly and only becomes manifest towards the end of a grazing season in which they have been exposed to the parasite. In an attempt to hasten the onset of immune reactions, 3 immunization protocols were set up. 24 heifers were allocated into 4...

Author(s)
Christensen, C. M.; Nansen, P.; Henriksen, S. A.; Monrad, J.; Satrija, F.
Citation
Veterinary Parasitology, 1992, 44, 3/4, pp 247-261
Abstract

The experiment reported comprised 3 groups of calves, (+P2), (-P2) and (-P1), which all started their first grazing season as parasite-free calves. The (+P2) and (-P2) groups grazed for 2 seasons. In the first season the (-P2)-group of calves was grazing a pasture with no detectable...

Author(s)
Grønvold, J.; Nasen, P.; Gasbarre, L. C.; Christensen, C. M.; Larsen, M.; Monrad, J.; Midtgaard, N.
Citation
Acta Veterinaria Scandinavica, 1992, 33, 4, pp 305-316
Abstract

A study was undertaken in Denmark to investigate whether experimental, mixed trichostrongyle infections of stabled calves prior to their first grazing season could confer sufficient immunity to significantly reduce egg excretion after turnout, and thereby prevent loss-producing infections later on. ...

Author(s)
Nansen, P.; Stefan, P. E.; Christensen, C. M.; Gasbarre, L. C.; Monrad, J.; Grønvold, J.; Henriksen, S. A.
Citation
International Journal for Parasitology, 1993, 23, 5, pp 627-638
Abstract

Partial genomic DNA libraries for Ostertagia ostertagi (Oo), Haemonchus placei (Hp), Cooperia oncophora (Co), and Oesophagostomum radiatum (Or) were generated and differentially screened with radiolabelled homologous and heterologous genomic DNA. Clones were identified from each species which did...

Author(s)
Christensen, C. M.; Zarlenga, D. S.; Gasbarre, L. C.
Citation
Experimental Parasitology, 1994, 78, 1, pp 93-100