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VetMed Resource

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

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Abstract

Interactions between gastrointestinal worms (Ostertagia ostertagi, Cooperia oncophora) and lungworms (Dictyocaulus viviparus) in calves were studied by assessing the effect of primary infections with either group of worms on the development of homologous or heterologous challenge infections....

Author(s)
Kloosterman, A.; Frankena, K.
Citation
Veterinary Parasitology, 1988, 26, 3-4, pp 305-320
Abstract

Three groups of eight 3-month-old Friesian calves were orally inoculated with 5000 L3 of Ostertagia spp. and 5000 L3 of Cooperia spp. 3 times/week for 3, 5 and 7 weeks, respectively; 7 calves from each group served as uninfected controls. One week later, 4 of the infected animals from each group...

Author(s)
Kloosterman, A.; Frankena, K.; Ploeger, H. W.
Citation
Veterinary Parasitology, 1989, 33, 2, pp 155-163
Abstract

Calves were infected repeatedly during a period of 6 weeks with O. ostertagi and C. oncophora, at an age of 3, 6 or 9 months. The inoculations were performed during 3 periods, February-March, May-June and August-September, to account for possible seasonal effects or effects of larval batches....

Author(s)
Kloosterman, A.; Ploeger, H. W.; Frankena, K.
Citation
Veterinary Parasitology, 1991, 39, 1-2, pp 101-113
Abstract

An experiment was carried out simultaneously in Glasgow, Scotland and in Wageningen, The Netherlands to investigate possible differences between the local strains of O. ostertagi and C. oncophora. In each location calves of the local Friesian breed were infected with 100 000 L3 of either the...

Author(s)
Bairden, K.; Frankena, K.; Parkins, J. J.; Armour, J.; Kloosterman, A.
Citation
Research in Veterinary Science, 1992, 52, 1, pp 22-27