Selenium in Cat Food

Selenium is a trace mineral that is essential to maintain a healthy immune system and thyroid gland in your cat. Fortunately, cat foods that are labeled as complete and balanced already contain the ideal amount of selenium your cat needs. Too much or too little selenium can cause serious health problems, however, so it is important to monitor your cat's food intake to ensure she is getting a balanced diet.

  1. Uses

    • Selenium works with other compounds to perform several critical functions. It is used to create an enzyme and natural antioxidant called glutathione peroxidase. In combination with vitamin E, this antioxidant protects your cat from cellular damage. Selenium also plays a role in normal thyroid and pancreatic functions. Although it has not been proven, evidence exists that selenium may help prevent cancer.

    Sources

    • Selenium is found in high protein meats including fish, poultry and beef. Whole grains and dairy products also provide selenium. Selenium from organic sources is easier for the cat's system to use properly. Inorganic selenium, which may be added to pet food in the form of sodium selenite, is more difficult for cats to use when under stress. In addition, unlike organic selenium, inorganic forms of the mineral cannot be stored by the cat for later use.

    Recommended Intake

    • When you purchase pet food that is labeled complete and balanced, it meets the standards of the American Feed Control Officials (AAFCO) Feline Nutrition Expert Subcommittee, including the recommended amount of selenium. The AAFCO recommends 0.1 mg/kg of selenium for both adult cats and kittens as of 2010.

    Toxicity

    • Selenium is toxic to many mammals, including humans, at high doses causing depression, nervousness, nausea and vomiting. However, cats have not shown toxic reactions to high doses of selenium and seem to have a greater tolerance for excess selenium.