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VetMed Resource

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Abstract

The epidemiology of Ostertagia ostertagi infection in cattle from Maine, USA, is discussed. Clinical ostertagiasis is seen mainly in calves and yearlings but outbreaks tend to be sporadic; the subclinical disease is of greater importance. Studies on the population dynamics of the free-living stages ...

Author(s)
Gibbs, H. C.
Citation
Veterinary Parasitology, 1988, 27, 1, pp 39-47
Abstract

Possible immunomodulation by low-level infection with O. ostertagi was studied in 4-month-old calves. Six groups of 4 calves were treated in the following way: group 1-nonparasitized controls; group 2-nonparasitized, but challenge exposed at day 64 with Brucella abortus strain 19 vaccine (BA) and...

Author(s)
Wiggin, C. J.; Gibbs, H. C.
Citation
American Journal of Veterinary Research, 1989, 50, 10, pp 1764-1770
Abstract

The possible development of type-1 hypersensitivity reactions in the abomasal mucosa caused by soluble L3 products of O. ostertagi was studied in 4-month-old calves sensitized by repeated exposure to L3 over a 50-day period followed by anthelmintic treatment. Four groups each of 4 calves were used. ...

Author(s)
Wiggin, C. J.; Gibbs, H. C.
Citation
American Journal of Veterinary Research, 1990, 51, 5, pp 825-832
Abstract

The nature of ostertagiasis and its epidemiology in cattle in northeastern USA is reviewed with particular reference to work done in the state of Maine.

Author(s)
Gibbs, H. C.
Citation
Veterinary Parasitology, 1993, 46, 1-4, pp 271-276
Abstract

Effects of strategic anthelmintic treatment on pathophysiological and immunological changes induced by infection with Ostertagia ostertagi and Cooperia oncophora were studied in 2 groups of 12 calves each: an infected group, inoculated with 200 000 mixed O. ostertagi and C. oncophora third-stage L3 ...

Author(s)
Yang, C.; Gibbs, H. C.; Xiao, L.; Wallace, C. R.
Citation
American Journal of Veterinary Research, 1993, 54, 12, pp 2048-2055
Abstract

Immunomodulation by O. ostertagi and the effects of strategic anthelmintic treatments were studied in 3 groups of 6 calves each: an infected group inoculated with 100 000 third-stage larvae (L3)/calf at 1 and 28 days; an infected-treated group, similarly inoculated, but treated with ivermectin 9...

Author(s)
Yang, C.; Gibbs, H. C.; Xiao, L.
Citation
American Journal of Veterinary Research, 1993, 54, 7, pp 1074-1083