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Abstract

A short note to record the finding of undeveloped earliest fifth stage Dictyocaulus larvae in the lungs of resistant cattle and sheep several weeks or months after natural or artificial infection.-M. L. CLARKE.

Author(s)
TAYLOR, E. L.; MICHEL, J. F.
Publisher
Lond.,
Citation
Nature, 1952, 169, pp 753
Abstract

A syndrome resembling "fog-fever" was produced in 12 out of 24 young cattle artificially infested with larvae of Dictyocaulus viviparus. M. suggested that " fog-fever " may be an allergic condition.-JAS. G. O'SULLIVAN.

Author(s)
MICHEL, J. F.
Publisher
Lond,
Citation
Nature, 1953, 171, pp 940
Abstract

The condition known as "fog fever"-pulmonary emphysema and oedema [the term 'fog' here referring to a second growth of grass; see V.B. 19, 547 & 2249; 21, 2975]-is frequently encountered in what are demonstrably outbreaks of parasitic bronchitis, especially in adult cattle. This syndrome may be...

Author(s)
MICHEL, J. F.
Citation
Veterinary Record, 1954, 66, pp 381-384
Abstract

The period of survival of larvae of Dictyocaulus in pads of cattle faeces on pasture and on the surrounding herbage varied from season to season, though the initial mortality was heavy throughout the year. In May the larvae survived for only 4 weeks, but they persisted for 13 weeks from October to...

Author(s)
MICHEL, J. F.; ROSE, J. H.
Citation
Journal of Comparative Pathology, 1954, 64, pp 195-205
Abstract

Samples of herbage taken immediately adjacent to freshly bitten grass harboured fewer larvae of Dictyocaulus viviparus than did random samples. There were also fewer larvae in samples taken from short recently grazed grass than in random samples. Bovine grazing behaviour thus appears to be...

Author(s)
MICHEL, J. F.
Publisher
Lond,
Citation
Nature, 1955, 175, pp 1088-1089
Abstract

The transmission of cattle lungworm infection was investigated in relation to four different pasture conditions-long grass, short grass produced by gangmowing, grazing by sheep and grazing by resistant cattle. The methods of study of value in this type of field investigation are discussed. It is...

Author(s)
SPEDDING, C. R. W.; MICHEL, J. F.
Citation
Parasitology, 1957, 47, pp 153-159
Abstract

The authors reported the findings of eggs of N. battus in the faeces of several calves grazing an experimental paddock which had been grazed by calves only and no sheep had had access to it, and the recovery of adult male and female specimens of the worm from the small intestine of one of the...

Author(s)
PARFITT, J. W.; MICHEL, J. F.
Citation
Veterinary Record, 1958, 70, pp 71
Abstract

A review of work on Dictyocaulus infestation in cattle. R.M.

Author(s)
Michel, J. F.
Citation
Journal of the Royal Agricultural Society, 1959, 120, pp 28-44
Abstract

I. C.f. tests using a heated adult worm antigen were carried out on the sera of 6 calves infected indoors with a single dose of D. viviparus larvae, one calf given multiple doses of larvae indoors and 24 calves exposed to infection at pasture. Faecal larval counts, herbage counts and P.M. worm...

Author(s)
Cornwell, R. L.; Michel, J. F.
Citation
Journal of Comparative Pathology, 1960, 70, pp 482-493
Abstract

Seven of 14 heifer calves 5 to 9 months of age were vaccinated with two doses of irradiated D. viviparus larvae. Compared with 7 non-vaccinated control animals they showed a significant rise in circulating blood eosinophils without developing symptoms of husk. The intensity of the response was...

Author(s)
Mackenzie, A.; Michel, J. F.
Citation
Veterinary Record, 1964, 76, pp 1493-1497

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