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Abstract

Experimental investigation of the life cycle of S. vulgaris revealed a migration of larvae to the mesenteric arteries, a period of development there, and finally migration back to the large intestine. The prepatent period is six months. The pathological effects of the infection are due to...

Author(s)
Duncan, J. L.; Pirie, H. M.
Citation
Helminth diseases of cattle, sheep and horses in Europe,, 1974, pp 115-126
Abstract

Calves which grazed from October 7, 1977, pasture infested with larvae of Ostertagia ostertagi and other gastro-intestinal nematodes were treated on November 8 (after housing for 6 days) or on January 4 (after housing for one month) with fenbendazole at 7.5 mg/kg body-weight. Autopsy worm counts 8...

Author(s)
Duncan, J. L.; Armour, J.; Bairden, K.
Citation
Veterinary Record, 1978, 103, 10, pp 211-212
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.
Citation
World Veterinary Congress (XXI): XXI World Veterinary Congress, 1-7 July, 1979, Moscow. Summaries. Volume 2, Section III: parasitology., 1979, pp 47
Abstract

The epidemiology of ostertagiasis in south-west Scotland was studied in groups of cattle grazed through two successive grazing seasons separated by a period of winter housing. Towards the end of the first grazing season (September) the numbers of infective larvae (L3) on the pasture had increased...

Author(s)
Armour, J.; Bairden, K.; Duncan, J. L.; Jennings, F. W.; Parkins, J. J.
Citation
Veterinary Record, 1979, 105, 22, pp 500-503
Abstract

The correspondents draw attention to instances of clinical ostertagiasis or parasitic bronchitis in young cattle after introduction onto aftermath pastures in late summer that had not been grazed by livestock since the previous autumn. Clinical or other evidence of infection appeared too soon for...

Author(s)
Armour, J.; Al Saqur, I. M.; Bairden, K.; Duncan, J. L.; Urquhart, G. M.
Citation
Veterinary Record, 1980, 106, 8, pp 184-185
Abstract

In Glasgow, Scotland, 10 soil samples of surface area 28 cm2 were taken to a depth of 10 cm from a permanent cattle pasture monthly between August 1978 and July 1979. Ostertagia ostertagi larvae were found on each occasion in the root-mat layer, in the soil down to 5 cm and at 5-10 cm, and the...

Author(s)
Armour, J.; Bairden, K.; Al Saqury, I. M.; Duncan, J. L.
Publisher
Martinus Nijhoff for the Commission of the European Communities., The Hague, Netherlands
Citation
Epidemiology and control of nematodiasis in cattle. An animal pathology Workshop in the CEC Programme of Coordination of Agricultural Research, Royal Veterinary and Agricultural University, Copenhagen, Denmark, 4-6 February 1980. (Current Topics in Veterinary Medicine and Animal Science Vol.9.), 1981, pp 277-282
Abstract

Work in Scotland which indicated that outbreaks of parasitic bronchitis (Dictyocaulus viviparus) in calves can arise from larvae which have overwintered in the soil is recapitulated [see Hm/A 48, 6091].

Author(s)
Duncan, J. L.; Urquhart, G. M.
Publisher
Martinus Nijhoff for the Commission of the European Communities., The Hague, Netherlands
Citation
Epidemiology and control of nematodiasis in cattle. An animal pathology Workshop in the CEC Programme of Coordination of Agricultural Research, Royal Veterinary and Agricultural University, Copenhagen, Denmark, 4-6 February 1980. (Current Topics in Veterinary Medicine and Animal Science Vol.9.), 1981, pp 241-244
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

The effect of annually alternating cattle and sheep was investigated in UK as an alternative to drug therapy in the control of bovine helminth infections. Until the second grazing season this system appeared to be successful, with a marked reduction in cattle worm burdens. However, by the end of...

Author(s)
Bairden, K.; Armour, J.; Duncan, J. L.
Citation
Veterinary Parasitology, 1995, 60, 1/2, pp 119-132

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