Vitamin A — essential for recessive white birds. — Most of us know all too well what a vitamin A deficiency does to recessive white birds — and to all birds that carry the recessive white factor. A deficiency leads to serious problems: blindness or even death. It will be clear that a breeding flock in which the birds suffer from vitamin A deficiency will almost certainly end in failure. Vitamin A — background. Vitamin A is also called Axeroftol or Retinol. Xerophthalmia is a serious eye disease that can be caused by it; retina refers to the lens of the eye.
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