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Veterinary information to support practice, based on evidence and continuing education

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Abstract

This is a short report of the discussions following 3 papers presented at this conference on the integrated control of nematodes of livestock.

Author(s)
Williams, J. C.
Citation
International Journal for Parasitology, 1999, 29, 1, pp 183-184
Abstract

Recent developments in biotechnology are creating new opportunities for detecting and controlling tick-borne haemoparasitic infections of livestock through efforts directed at both the vertebrate and invertebrate hosts. The focus of this brief discussion is limited to some of the new molecular...

Author(s)
Stiller, D.
Citation
Annals of the New York Academy of Science, 1992, 653, pp 19-25
Abstract

This paper gives an overview of anthelmintic treatment strategies. It lists the main controversies and question areas (resistance, environmental toxicity, tissue residues, delayed immune response, cost of developing new anthelmintics, difficulties in implementation, alternative control methods),...

Author(s)
Williams, J. C.
Citation
Veterinary Parasitology, 1997, 72, 3/4, pp 461-477
Abstract

The epidemiology of Ostertagia ostertagi as primarily defined in weaner-yearling cattle in the USA and other parts of the world are reviewed and some of the factors which operate in population changes of the parasite through different age classes are considered under the headings: epidemiology in...

Author(s)
Williams, J. C.; Knox, J. W.; Loyacano, A. F.
Citation
Veterinary Parasitology, 1993, 46, 1-4, pp 313-324
Abstract

A total of 324 steers were randomly allotted into 4 treatment groups. Preliminary slaughters indicated that 95% of the cattle had O. ostertagi inhibited larvae. Nine calves from each group were examined at slaughter for efficacy evaluation 12 or 13 days after treatment. Efficacies against inhibited ...

Author(s)
Williams, J. C.; Bechtol, D. T.; Hollis, L. C.; Herschler, R. C.
Citation
Agri-Practice, 1991, 12, 5, pp 14-15, 17-20
Abstract

Efficacy of a spring strategic treatment programme with fenbendazole (FBZ) to reduce the accumulation of Ostertagia ostertagi inhibited early fourth-stage larvae (EL4) was investigated in two groups of crossbred beef heifers in Louisiana, USA, which were 7-9 months of age and ranged in weight from...

Author(s)
Williams, J. C.; Loyacano, A. F.; Broussard, S. D.; Coombs, D. F.; DeRosa, A.; Bliss, D. H.
Citation
Veterinary Parasitology, 1995, 59, 2, pp 127-137
Abstract

This article gives an account of Dictyocaulus viviparus in cattle with particular reference to research undertaken in Louisiana, USA. The infection is considered under the headings of life cycle, clinical signs, recognition and diagnosis, seasonal transmission and control of the infection. The main ...

Author(s)
Williams, J. C.; Eddi, C. S.
Citation
Louisiana Agriculture, 1990, 33, 3, pp 18-20
Abstract

Persistence of ivermectin anthelmintic activity in injectable and pour-on formulations against experimental infections of gastrointestinal nematodes in cattle was investigated in 5 groups of 6 calves each. Two groups were treated with the injectable or pour-on product at 14 days before experimental ...

Author(s)
Williams, J. C.
Citation
Louisiana Agriculture, 1992, 35, 5, pp 15-18
Abstract

Three groups of 11 naturally infected crossbred beef calves were injected subcutaneously with moxidectin 1% injectable at 0.2 or 0.3 mg moxidectin/kg bodyweight or with the unmedicated vehicle. Nematode infections had been acquired during grazing from December to April. Based on the faecal egg...

Author(s)
Williams, J. C.; Barras, S. A.; Wang, G. T.
Citation
Veterinary Record, 1992, 131, 15, pp 345-347
Abstract

A study of seasonal trends of gastrointestinal nematode infection and disease of cattle in relation to climate and management conditions suggested a need for strategic deworming treatments to reduce exposure. A primary programme of 3 treatments at long intervals succeeded in 4 yearly experiments....

Author(s)
Knox, J. W.; Williams, J. C.; Loyacano, A. F.
Citation
Louisiana Agriculture, 1991, 34, 4, pp 5-7

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