Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Selenised compressed salt blocks for selenium deficient sheep.

D F Money1, W J Meads, L Morrison

  • 1Animal Health Division, Wallaceville Animal Research Centre, Ministry of Agriculture and Fisheries, Private Bag, Upper Hutt.

New Zealand Veterinary Journal
|June 1, 1986
PubMed
Summary

Selenium salt blocks failed to prevent selenium deficiency in New Zealand sheep. Even high concentrations were insufficient, indicating this method is not recommended for selenium-deficient pastures.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The presence and fate of priority pollutant metals in animal manure: Legislation, impact and mitigation.

Ecotoxicology and environmental safety·2025
Same author

Be it resolved airway clearance cannot and should not be replaced by exercise in the era of CFTR modulators-Summary of a Pro/Con debate.

Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society·2025
Same author

Quantifying the influence of climate change on pesticide risks in drinking water.

The Science of the total environment·2025
Same author

Dental damage: Creating 3D anatomical models to illustrate destructive effects on human teeth.

Morphologie : bulletin de l'Association des anatomistes·2024
Same author

Ferumoxytol-enhanced MRI assessment of venous Thrombus resolution and macrophage content in a murine deep vein thrombosis model.

Thrombosis research·2024
Same author

Limited bedding and nesting increases ethanol drinking in female rats.

Pharmacology, biochemistry, and behavior·2024

Area of Science:

  • Animal Nutrition
  • Trace Mineral Supplementation
  • Sheep Production

Background:

  • Selenium deficiency is a significant concern for livestock in regions like Te Anau, New Zealand.
  • Inadequate selenium levels can lead to reduced animal health and productivity.
  • Salt blocks are a common method for delivering mineral supplements to grazing sheep.

Purpose of the Study:

  • To evaluate the efficacy of selenium (Se) salt blocks as a sole supplement for sheep in a selenium-deficient area.
  • To determine if 30 or 120 ppm Se concentrations in salt blocks could prevent selenium deficiency in sheep.
  • To assess the impact of selenium supplementation via salt blocks on sheep health and performance.

Main Methods:

  • Sheep in Te Anau, New Zealand, were supplemented using salt blocks containing either 30 or 120 ppm selenium.

Related Experiment Videos

  • Multiple trials were conducted over a period to assess deficiency levels in lambs and ewes.
  • Clinical signs of deficiency, such as unthriftiness and reproductive issues, were monitored.

    • Main Results:

    • Both 30 and 120 ppm selenium salt blocks were unsatisfactory in preventing selenium deficiency.
    • In trials with 120 ppm Se salt blocks, deficiency ranged from 31-32% in lambs and ewes, rising to 56-63% when marginally deficient animals were included.
    • Selenium-responsive unthriftiness was observed in lambs, and potential selenium-responsive infertility affected ewe lambing performance.

    Conclusions:

    • Selenised salt blocks at the tested concentrations failed to eliminate selenium deficiency in sheep.
    • The use of selenium salt blocks as the sole supplement for sheep grazing selenium-deficient pastures is not recommended.
    • Alternative or more effective selenium supplementation strategies are required for sheep in deficient areas like Te Anau.