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Abstract

Host immunoglobulin was detected in homogenates of adult worms or L4 of Haemonchus contortus, Ostertagia ostertagi, O. circumcincta [Teladorsagia circumcincta] and Dictyocaulus viviparus, but not in preparasitic L3 of H. contortus. All the worms had been washed in detergent before being homogenized ...

Author(s)
Murray, J.; Smith, W. D.
Citation
Research in Veterinary Science, 1994, 57, 3, pp 387-389
Abstract

Ostertagia ostertagi adult worm extracts were analysed by Western blotting using sera from calves experimentally infected with O. ostertagi and Cooperia oncophora. Strong differences in antigen recognition were noticed, even between animals from the same group. Two Ostertagia specific antigens with ...

Author(s)
Graaf, D. C. de; Berghen, P.; Hilderson, H.; Claerebout, E.; Vercruysse, J.
Citation
International Journal for Parasitology, 1994, 24, 5, pp 681-688
Abstract

Between May 1985 and April 1986, the helminth fauna of cattle from Lajeado Grande district of Rio Grande do Sul, Brazil, was investigated. The species identified were Haemonchus contortus, Ostertagia ostertagi, O. circumcincta, Trichostrongylus axei, T. colubriformis, Cooperia punctata, C....

Author(s)
Silva-Santos, I. C.; Lima Correa, B.; Scaini, C. J.; Carniel, R. L.
Citation
Lavoura Arrozeira, 1994, 47, 415, pp 6-12, 14, 16-18
Abstract

Eight controlled trials were conducted, using 96 cattle of European breeds, to evaluate the efficacy of abamectin against natural and artificially acquired infections by adult and fourth-stage larvae of all the economically important gastrointestinal nematodes and lungworms in Germany and the UK....

Author(s)
Heinze-Mutz, E. M.; Pitt, S. R.; Bairden, K.; Baggott, D. G.; Armour, J.; Barth, D.; Cramer, L. G.
Citation
Veterinary Record, 1993, 132, 2, pp 35-37
Abstract

The phenomenon of hypobiosis of nematodes is described and its role in pathology and epidemiology of nematode infections in cattle is reviewed. The phenomenon has been demonstrated for Ostertagia ostertagi as well as for Dictyocaulus viviparus and can be artificially induced when L3 larvae are...

Author(s)
Schilliger, D.; Barth, D.
Citation
Tierärztliche Umschau, 1993, 48, 9, pp 592-596
Abstract

Three studies were conducted involving cattle exposed to experimental nematode infections. These studies were designed to investigate the prophylactic activity of a single s.c. treatment of doramectin at 200 µg/kg bwt against infections of Ostertagia ostertagi, Cooperia oncophora and Dictyocaulus...

Author(s)
Weatherley, A. J.; Hong, C.; Harris, T. J.; Smith, D. G.; Hammet, N. C.
Citation
Veterinary Parasitology, 1993, 49, 1, pp 45-50
Abstract

Doramectin, 25-cyclohexyl-5-O-demethyl-25-de(1-methylpropyl)avermectin A1a, was selected as the best of a series of novel avermectins prepared by mutational biosynthesis. The primary evaluation of its in vivo antiparasitic activity was carried out using a rat Trichostrongylus colubriformis model...

Author(s)
Goudie, A. C.; Evans, N. A.; Gration, K. A. F.; Bishop, B. F.; Gibson, S. P.; Holdom, K. S.; Kaye, B.; Wicks, S. R.; Lewis, D.; Weatherley, A. J.; Bruce, C. I.; Herbert, A.; Seymour, D. J.
Citation
Veterinary Parasitology, 1993, 49, 1, pp 5-15
Abstract

After introducing the relevant parasites (Ostertagia ostertagi, Trichostrongylus axei, Cooperia oncophora and Dictyocaulus viviparus) and describing their epidemiology, the advantages and disadvantages of various strategies for the control of the parasites are discussed. The importance of a...

Author(s)
Steffan, P.
Citation
Veterinaria Argentina, 1992, 9, 84, pp 262-272
Abstract

Intestinal parasites were collected from 113 heifers (62 grazing, 51 housed) on Hachijo Island, Japan, and examined. Gastrointestinal nematodes of 11 species (10 genera) were found in 88 of the cows (77.9%). Ostertagia ostertagi was found in 28 cows (31.8%), Oesophagostomum radiatum in 16 (18.2%), ...

Author(s)
Suzuki, K.; Inoue, I.; Kurihara, T.; Iizima, M.; Tanaka, T.; Toritani, Y.; Ohkubo, T.; Kishida, K.
Citation
Bulletin of the College of Agriculture and Veterinary Medicine, Nihon University, 1992, No. 49, pp 68-72
Abstract

Paraherquamide, an oxindole alkaloid metabolite of Penicillium paraherquei and Penicillium charlesii, was tested against the adult stages of 9 common gastrointestinal and lung nematodes of calves at single, oral dosages of 0.5, 1.0, 2.0 or 4.0 mg/kg. At dosages of 1.0-4.0 mg/kg there was 95% or...

Author(s)
Shoop, W. L.; Michael, B. F.; Haines, H. W.; Eary, C. H.
Citation
Veterinary Parasitology, 1992, 43, 3/4, pp 259-263

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