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Abstract

Calves were grazed from November 22nd 1976 to January 11th 1977 on pasture heavily contaminated with infective larvae of Ostertagia ostertagi and Cooperia oncophora and were then divided into 3 groups which were treated orally with oxfendazole at 0, 2.5 or 5.0 mg/kg body-weight. Postmortem...

Author(s)
Armour, J.; Duncan, J. L.; Reid, J. F. S.
Citation
Veterinary Record, 1978, 102, 12, pp 263-264
Abstract

Author(s)
Reid, J. F. S.; Armour, J.; Duncan, J. L.
Publisher
Organizing Committee., Warsaw, Poland
Citation
4th International Congress of Parasitology, 19-26 August, 1978, Warsaw. Short communications, Section D., 1978, pp 42
Abstract

In the west of Scotland the epizootiology of parasitic bronchitis in grazing calves was studied over a 2-year period with the aid of tracer calves and herbage examinations for Dictyocaulus viviparus larvae. The observations of both years emphasized the importance of overwintered lungworm larvae as...

Author(s)
Duncan, J. L.; Armour, J.; Bairden, K.; Urquhart, G. M.; Joergensen, R. J.
Citation
Veterinary Record, 1979, 104, 13, pp 274-278
Abstract

Author(s)
Duncan, J. L.; Urquhart, G. M.
Publisher
Martinus Nijhoff., The Hague, Netherlands
Citation
Epidemiology and control of nematodiasis in cattle, 1981, pp 241-24
Abstract

Calves infected by surgical transplantation of adult Ostertagia ostertagi had raised levels of plasma pepsinogen, and those in which the largest number of worms became established also had elevated plasma gastrin concentrations. Despite the elevated plasma pepsinogen values, the abomasal pH of the...

Author(s)
McKellar, Q.; Duncan, J. L.; Armour, J.; Lindsay, F. E. F.; McWilliam, P.
Citation
Research in Veterinary Science, 1987, 42, 1, pp 29-34
Abstract

To investigate the pathophysiology of H. placei infection in Friesian calves, 7 calves were divided into 2 groups, 3 uninfected calves (control group) and 4 infected calves. The latter calves were infected orally with 500 H. placei larvae/kg bwt. Five weeks after infection they were all housed in...

Author(s)
Gennari, S. M.; Vieira Bressan, M. C. R.; Rogero, J. R.; MacLean, J. M.; Duncan, J. L.
Citation
Veterinary Parasitology, 1991, 38, 2-3, pp 163-172
Abstract

Antibody responses to the surface-exposed antigens of living Dictyocaulus viviparus larvae and adult worms were measured by quantitative immunofluorescence using sera from calves infected with, or vaccinated against, the parasite. In infected animals, the sheath surface of third-stage (L3), which...

Author(s)
McKeand, J. B.; Duncan, J. L.; Urquhart, G. M.; Kennedy, M. W.
Citation
Veterinary Parasitology, 1996, 61, 3/4, pp 287-295

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