Reply To: General Mineral Discussion

  • theholisticgoat

    August 28, 2023 at 2:23 pm

    Saving this one for later. I can’t wait to dig into it. 😁

    Mineral Tolerances of Animals


    Everything, including required nutrients, is
    toxic when consumed in great enough quantities.
    Signs of toxicity range from the mild (slightly reduced
    milk yields) to the most extreme (death). The
    maximum tolerable level (MTL) is the highest ‘dose’
    of something that does not cause any adverse
    effects on an animal. Dose can be defined as
    quantity consumed over time or per unit of body
    weight (e.g., grams/day or grams/lb), or
    concentration in the diet or drinking water (e.g., %
    or ppm). In 2005, the National Research Council
    published a book that summarized the scientific
    literature on mineral tolerances of animals. The
    book includes information on 39 minerals (although
    information for some is extremely limited) that could
    be consumed by animals via a ‘normal diet’, a
    contaminated diet, and/or via drinking water. The
    committee that wrote the report established MTL
    for those 39 minerals (plus nitrate) based on changes
    in production, intake, and adverse health effects.
    Some of the MTL that are of practical importance
    include copper at 40 ppm (all values are on a dietary
    dry matter basis); selenium at 5 ppm, sulfur at 0.3
    to 0.6%, and sodium chloride (salt) at 3%; however,
    numerous factors influence the MTL and these MTL
    should only be considered as guidelines. This paper
    will discuss the MTL of some of the minerals that
    are of practical significance in the tri-state area and
    provide an overview of some of the more important
    points in the publication.