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Selenium and Fluoride Toxicology

Water Quality Guidelines for Dohne Merino Sheep in Southern Africa
  • J. A. Meyer
  • N. H. Casey
Chapter
  • 19 Downloads

Conclusion

Successful livestock production is dependent on the provision of water with a specific chemical composition. The aim of a WQG is to recommend what the composition should be, not just to prevent adverse effects, but to achieve optimal water utilisation. It is concluded that under the trial conditions experienced in this study, adverse effects due to the provision of F in the drinking water to a concentration of 20 mg/L from birth to slaughter weight, may be mitigated by use of B as an alleviator at a concentration of ca. 25 mg/L. Where water [F] is marginal in terms of being potentially hazardous, it is concluded that 25 mgB/L will not in itself result in any adverse effects and can thus be recommended for use over the production phase used. Based on growth, histopathological and whole blood [Se] results and reduced synergistic factors in the trial design, it is concluded that drinking water containing 0–1 mgSe/L with a maximum total ingestion of 3.884 mg Se/sheep/d and [Cu ]of <0.001 mg/L, used for mutton production over the period of weaning to slaughter weight, could be recommended for use.

Keywords

Dental Fluorosis Water Quality Guideline Slaughter Weight Water Affair Water Quality Constituent 
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.

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • J. A. Meyer
    • 1
  • N. H. Casey
    • 1
  1. 1.Department of Animal and Wildlife SciencesUniversity of PretoriaPretoriaSouth Africa

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