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The recommended allowance, therefore, has been set b NRC Iodine. In: Nutrient Requirements of Dogs and Cats. The
at 1.3mg/kg DM, taking into account a safety margin of National Academic Press, Washington, DC. 2006: pp. 181-184;
20%. This corresponds with the minimum requirement Table 15-12 pp. 366-367.
stated by NRC (Table 15-12). b
Iron
Iron Because of very poor availability, iron from a NRC Absorption and bioavailability of dietary iron in dogs and
oxide or carbonate salts that are added to the diet cats. In: Nutrient Requirements of Dogs and Cats. The National
should not be considered sources contributing to the Academic Press, Washington, DC. 2006: pp. 168-169.
minimum nutrient level. a
VITAMINS
Vitamin A
Vitamin A (Adult cats) The FEDIAF maximum is based a Seawright AA, English PB, Gartner RJW. Hypervitaminosis A and
on the study reported by Seawright et al. in kittens. a deforming cervical spondylosis of the cat. J. Comp. Path.1967; 77: 29-39.
The FEDIAF maximum of 40 000 IU/100g DM is about
50% of the maximum NOAEL reported by Seawright et
al. in kittens from 6 to 8 weeks of age fed for 41 weeks.
a
Since kittens are at least equally vulnerable as adults
to hypervitaminosis A, this level should also be safe for
adult cats.
Vitamin A (Growth and reproduction) Seawright a Seawright AA, English PB, Gartner RJW. Hypervitaminosis A and
et al. a reported no adverse effects in kittens from 6 to deforming cervical spondylosis of the cat. J. Comp. Path.1967;
8 weeks of age fed for 41 weeks on a vitamin A intake 77: 29-39.
of 50,000 IU/kg BW corresponding to about 90,000 IU b Freytag TL, Liu SM, Rogers AR, Morris JG. Teratogenic effects of
per 100g DM. Therefore, FEDIAF’s maximum of 40,000 chronic ingestion of high levels of vitamin A in cats. J. Anim Phys
IU/100g DM can be considered safe for growing kittens. and Anim Nutr. 2003; 87: 42-51.
c NRC Chapter 8. Vitamins - Hypervitaminosis A. In: Nutrient
Freytag et al. b reported that feeding a food with Requirements of Dogs and Cats. The National Academic Press,
100,000 IU/100g DM to pregnant queens caused fatal Washington, DC. 2006: p. 200.
malformations in kittens. The next lowest value of 2000
IU/100g DM caused no adverse effects. From these data
NRC 2006 recommended not to exceed 33,330 IU/100g
DM in feeding stuffs intended for reproduction. c
In view of these data, FEDIAF recommends a
maximum vitamin A level of 33,330 IU/100g DM for
products designed for reproducing queens.
Vitamin D
Vitamin D Based on the study of Sih et al. (2001) a a Sih TR, Morris JG, Hickman MA. Chronic ingestion of high
nutritional maximum of 3000 IU/100 DM (7500 IU/1000kcal) concentrations of cholecalciferol in cats. Am. J. Vet. Res. 2001;
can be considered safe for cats of all life stages. a 62 (9): 1500-1506.
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