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  • Title: Rapid induction of vitamin A deficiency in rabbits.
    Author: el-Ghorab M, Knapka J, Underwood BA.
    Journal: Lab Anim Sci; 1987 Aug; 37(4):465-7. PubMed ID: 3669598.
    Abstract:
    Clinical and biochemical evidence of vitamin A deficiency was produced in rabbits as early as 4-5 weeks after weaning to a vitamin A deficient diet from dams maintained during lactation on the deficient diet. Mean serum retinol levels at the time of weaning for the deficient dams were 25 +/- 6 micrograms/dl compared with 74 +/- 8 micrograms/dl for the controls. Five weeks after weaning, 25% of pups fed the vitamin A deficient diet had ocular lesions characterized by the accumulation of sloughed epithelium on the cornea. At this time, mean serum values of the pups were 10 +/- 4 micrograms/dl for the deficient group and 73 +/- 8 micrograms/dl for the controls. Evidence of critically depleted liver stores was documented in the deficient rabbits by an elevated relative dose response test (54 +/- 18%) that did not occur in the control group (6 +/- 5%). Although food consumption was similar, weight gain was lower in the deficient group when compared to the control group.
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