Some Physical Aspects of Continuous Low Dosage of Anthelmintics via Drinking Water

  • J. O’Shea
  • N. E. Downey
Part of the Current Topics in Veterinary Medicine and Animal Science book series (CTVM, volume 9)


Factors influencing the drinking behaviour of calves receiving continuous low level dosage of anthelmintic in the drinking water were studied. An indoor experiment is described which indicates a positive correlation between effectiveness of parasite control and level of water intake. Similar effects were observed under grazing conditions. Data are presented relating water intake to calf weight and rainfall for a variety of anthelmintic treatments.

To achieve consistent dose levels anthelmintics should be included only in the first 0.5 gallons*of liquid which calves consume daily. In grazing experiments, where this was carried out using both soluble and insoluble anthelmintics, no evidence of unpalatability was noticed. Observations are presented on the drinking behaviour of individual calves consuming phenothiazine from a common trough under these circumstances. Details are given of a proposed system for the automatic administration of anthelmintics in drinking water.


Water Intake Drinking Behaviour Anthelmintic Treatment Parasite Control Grazing Experiment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Downey, N.E., O’Shea, J. and Spillane, T.A., 1974. Preliminary observations on the use of low-level medication in calves’ drinking water as a means of endoparasite control. Irish Veterinary Journal, 28, 221–222.Google Scholar
  2. Downey, N.E. and O’Shea, J., 1977. Calf parasite control by means of low-level anthelmintic administered via the drinking water. Veterinary Record. 100, 265–266.PubMedCrossRefGoogle Scholar
  3. Wright, D.E., Towers, N.R., Hamilton, P.B. and Sinclair, D.P., 1978. Intake of zinc sulphate in drinking water by grazing beef cattle. N.Z. Journal of Agricultural Research. 21, 215–221.Google Scholar

Copyright information

© ECSC, EEC, EAEC, Brussels-Luxembourg 1981

Authors and Affiliations

  • J. O’Shea
    • 1
  • N. E. Downey
    • 1
  1. 1.The Agricultural Institute DunsineaCastleknock, Co. DublinIreland

Personalised recommendations