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Abstract

In field trials in 1983-84, Hereford weaner steers were given no anthelmintic treatment or were treated with morantel slow release bolus, pour-on levamisole or albendazole orally. Nematode egg counts in faeces were generally <50/g, indicating low numbers of adult nematodes. Treatment significantly affected mean faecal egg count, those for controls and morantel being 16 and 10/g above the overall mean (47/g) and levamisole and albendazole 6 and 12/g below the mean. There were no significant differences between treatments in numbers of larvae on pasture. At the end of both years most nematodes were early 4th stage larvae of O. ostertagi. There were no significant differences in nematode counts or...

Author(s)
Riffkin, G. G.; Callinan, A. P. L.
Citation
Australian Veterinary Journal, 1987, 64, 6, pp 168-172
Abstract

18-month-old cattle were slaughtered during December 1983 and 1984 to determine final nematode counts. 8 of these animals in 1983 and 12 in 1984 were given albendazole at 7.5 mg/kg and retained in yards 10 days prior to slaughter. Compared to the untreated group, there were significant reductions...

Author(s)
Callinan, A. P. L.; Riffkin, G. G.
Citation
Australian Veterinary Journal, 1987, 64, 4, pp 121-122
Abstract

Trichostrongylid burdens in 1 to 2-year-old dairy heifers were estimated after they grazed with a dairy herd for up to 12 months. Ostertagia ostertagi, Trichostrongylus axei and Cooperia oncophora represented 79.5, 12.7 and 7.8%, respectively, of all trichostrongylids recovered. The largest burden...

Author(s)
Overend, D.; Veale, P. I.; Copland, J. W.
Citation
Australian Veterinary Journal, 1984, 61, 6, pp 169-174
Abstract

The prevalence of abomasal trichostrongylidiasis was studied in 68 dairy cows, 2 to 13 years of age, from irrigated farms within northeastern Victoria. Abomasal trichostrongyles were found in 93% of animals examined. The mean total number of O. ostertagi and T. axei recovered was 14 800...

Author(s)
Overend, D.
Citation
Australian Veterinary Journal, 1984, 61, 4, pp 124-126
Abstract

In Victoria, Australia, cattle faeces containing eggs of O. ostertagi and sheep pellets containing eggs of O. circumcincta were placed on dry and irrigated pasture plots at 4 times during the period October 1977 to February 1978. Faecal pellets lost moisture far more rapidly than did dung pats. The ...

Author(s)
Young, R. R.
Citation
Australian Journal of Agricultural Research, 1983, 34, 5, pp 569-581
Abstract

This review considers work done on Ostertagia ostertagi, Cooperia oncophora and Trichostrongylus axei, the 3 most important nematodes causing parasitic gastroenteritis in cattle in the temperate zone of Australia. The free-living stages in dung pats, the availability of infective larvae on pasture...

Author(s)
Anderson, N.; Donald, A. D.; Waller, P. J.
Publisher
Division of Animal Health, CSIRO, Australia
Citation
The epidemiology and control of gastrointestinal parasites of cattle in Australia., 1983, pp 47-63
Abstract

On a series of pasture plots, 500 g pats of cattle faeces containing eggs of the trichostrongylid nematode Ostertagia ostertagi were deposited at intervals of about 6 weeks from June 1976 to June 1977. The development and survival of eggs and larvae in dung pats and the survival of larvae on...

Author(s)
Young, R. R.; Anderson, N.
Citation
Australian Journal of Agricultural Research, 1981, 32, 2, pp 371-388
Abstract

In autumn, experimental animals were drawn from three herds that had grazed pasture during the previous winter and spring. One herd of two-year-old steers had had ostertagiasis during that period. The other two herds, one of three-year-old heifers and one of ten-month-old weaners, were apparently...

Author(s)
Cummins, L. J.; Callinan, A. P. L.
Citation
Veterinary Record, 1979, 104, 4, pp 77-78
Abstract

Experiments at Hamilton, Victoria, Australia, with tracer calves showed a sharp rise in the proportion of inhibition-prone larvae of Ostertagia ostertagi on pasture from mid-September to mid-October.

Author(s)
Pritchard, D. H.
Publisher
Australian Veterinary Association., Artarmon, NSW, Australia
Citation
Australian Advances in Veterinary Science, 1979., 1979, pp 11-12
Abstract

In Victoria, Australia, worm-free heifers were experimentally infected with larvae of Ostertagia ostertagi and Cooperia spp. that had been chilled to induce inhibition. After 21 days they were treated with fenbendazole (7.5 mg/kg bodyweight) or thiabendazole (88.0 mg a.i./kg) or left untreated. 7...

Author(s)
Callinan, A. P. L.; Cummins, L. J.
Citation
Australian Veterinary Journal, 1979, 55, 8, pp 370-373

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