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Abstract

Circulating antibodies associated with D. viviparus infections can be detected by means of a complement fixation test.
Hyperimmune serum was obtained by experimental infection of recovered field cases of parasitic bronchitis. A globulin preparation from this serum when injected intraperitoneally...

Author(s)
Jarrett, W. F. H.; Jennings, F. W.; Mcintyre, W. I. M.; Mulligan, W.; Urqu-hart, G. M.
Citation
Veterinary Record, 1955, 67, pp 291-296
Abstract

This paper consists largely of a review of work carried out at the Glasgow Veterinary School and reported in greater detail elsewhere [V.B. 25, 713; 26, 1324 & 2340; 27, 555 & 1824]. The general literature is not reviewed.
In the discussion the authors reported the results of immunizing...

Author(s)
Jarrett, W. F. H.; Mcintyre, W. I. M.; Jennings, F. W.; Mulligan, W.
Citation
Veterinary Record, 1957, 69, pp 1329-1336
Abstract

A small-scale field trial in calves of a vaccine against parasitic bronchitis is described. The vaccine was made by attenuating infective Dictyocaulus viviparus larvae by X-irradiation. A high degree of protection was conferred as judged by clinical and pathological findings, mortality, morbidity,...

Author(s)
Jarrett, W. F. H.; Jennings, F. W.; Martin, B.; Mclntyre, W. I. M.; Mulligan, W.; Sharp, N. C. C.; Urquhart, G. M.
Citation
Veterinary Record, 1958, 70, pp 451-453; 454
Abstract

It has been shown experimentally that infection of calves with D. viviparus confers a high degree of resistance to re-infection. This acquired immunity can result from a single infection with a sub-lethal dose or from repeated doses of small numbers of larvae. Animals immunized by a previous...

Author(s)
Jarrett, W. F. H.; Jennings, F. W.; McIntyre, W. I. M.; Mulligan, W.; Thomas, B. A. C.; Urquhart, G. M.
Citation
Immunology, 1959, 2, pp 252-261
Abstract

A brief account was given of the lesions and clinical signs associated with Dictyocaulus viviparus infection in cattle. The progress of the disease was divided into pre-patent, patent and postpatent phases, according to the stages of the parasite's life cycle. The complications caused by emphysema, ...

Author(s)
Jarrett, W. F. H.; Jennings, F. W.; McIntyre, W. I. M.; Mulligan, W.; Sharp, N. C. C.; Urquhart, G. M.
Citation
Veterinary Record, 1960, 72, pp 1066-1067; 1068
Abstract

I. Experiments on the vaccination of calves against D. viviparus infection using whole worm antigen in Freund's adjuvant are described. A reduction in the number of worms developing from a challenge infection was sometimes obtained but the method seems to be of little practical value.

Author(s)
Jarrett, W. F. H.; Jennings, F. W.; Mclnryre W. I. M.; Mulligan, W.; Urquhart, G. M.
Citation
Immunology, 1960, 3, pp 135-144
Abstract

At each of two west of Scotland farms with a previous history of ostertagiasis, ten 'permanent' calves aged 2 0.5 months were turned out in May to graze until November unless the development of clinical ostertagiasis necessitated their removal. Two 'tracer' calves aged 2-3 months were put out at...

Author(s)
Armour, J.; Anderson, N.; Jennings, F. W.; Ritchie, S. D. S.; Urguhart, G. M.
Publisher
Wellcome Labs, for Exp. Parasitology, Glasgow Univ.,
Citation
Parasitology, 1965, 55, Part 4, pp 11P p
Abstract

In two calves with abomasal fistulae given a single dose of 300, 000 O. ostertagi larvae, plasma pepsinogens began to rise at day 6 to 30 µ, g., compared to the normal pre-infection level of 10-4 µg., remained at this level between days 8 and 14 (while larvae were developing in the gastric gland,...

Author(s)
Jennings, F. W.; Armour, J.; Roberts, R.; Lawson, D. D.
Publisher
Wellcome Labs, for Exp. Parasitology, Glasgow Univ.,
Citation
Parasitology, 1965, 55, Part 4, pp 12P p
Abstract

On two Ayrshire farms with histories of severe ostertagiasis, ten worm-free calves were put out to graze from May-Nov. and two additional calves were put out and replaced every fortnight during this period. Counts of O. ostertagi performed four days after removal of calves from pasture showed that...

Author(s)
Anderson, N.; Armour, J.; Jennings, F. W.; Ritchie, J. D.; Urquhart, G. M.
Citation
Veterinary Record, 1965, 77, pp 146-147
Abstract

In an experiment designed to study the pathogenesis of Ostertagia ostertagi infections in cattle, samples of abomasal fluid were removed daily from 2 calves infected by a single dose of O. ostertagi larvae and from 2 uninfected calves. Biochemical changes in the blood and abomasal fluid occurred...

Author(s)
Anderson, N.; Armour, J.; Eadie, R. M.; Jarrett, W. F. H.; Jennings, F. W.; Ritchie, J. S. D.; Urquhart, G. M.
Citation
American Journal of Veterinary Research, 1966, 27, pp 1259-1265

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