Animals get more Magnesium than human RDA, and not as a single serving

Humans, as well as most animals, do no get the recommended daily intake at one time of

  • Water

  • Food

  • Magnesium

    • The intestines just cannot process it all at once.
    • In animals, as well as humans, the daily amount of Magnesium all at once causes diarrhea.

Adjusted for an animal (human) weighing 200 lbs the amount of Magnesium needed is

  • 2600 mg – horse

  • 1000 mg – beef cattle

  • 3000 mg – dairy cattle

  • 800 mg – monkey


Horses Merck Manual

Horse: 13 mg/kg body wt/day 200 lb horse/human = 2,600 mg/day

Mineral Supplements for Beef Cattle University of Missouri Extension

Cattle need about 0.04 to 0.1 % magnesium in the dry matter of their ration. (assuming lots in the feed)

Assuming a human eats 1 kg of food per day 0.1% would be 1000 mg of Magnesium element

Mineral and Vitamin Nutrition of Dairy Cattle Nebraska

0.2 – 0.25% of dry food – about 3X of Beef cattle

Nutrition in Primates Merick

0.08% of dry feed ==> 800 mg of Magnesium for a 200 lb human

Cat Food Standards by the AAFCO - 2008

0.04% dry feed ==> 400 mg of Magnesium for a 200 lb human


See also VitaminDWiki

Tags: Magnesium