Mixing of selenium and anthelmintic drench

Authors: Farquharson BC, Cooper BS
Publication: New Zealand Veterinary Journal, Volume 37, Issue 2, pp 85-86, Jun 1989
Publisher: Taylor and Francis

Animal type: Livestock
Subject Terms: Animal remedies/veterinary medicines, Anthelmintics, Parasite control, Parasites - internal, Treatment/therapy, Pharmacology, Selenium, Trace elements
Article class: Correspondence

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Abstract: The food processing, pharmaceutical manufacturing and paint industries are well aware of the difficulties inherent in mixing together two or more suspensions or liquids of any kind. Their baffled vessels, adequate `head space` and the agitation rhythms and cycles are designed to produce optimum mixing, and quality assurance routines are in place to confirm that this happens on each occasion. The effectiveness of the mixing process is of course vital if one of the components has a narrow margin of safety. Such a procedure, but lacking the quality assurance safeguards of industry, is regularly carried out at veterinary clinical centres when selenium is added to anthelmintic drench for cattle or sheep. There are a number of technical and practical reasons why this course has been so widely adopted in New Zealand rural practice. Afterwards the container is shaken and the farmer advised to…

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