Notes:
Regarding the issue of cubs, as mentioned previously, over half of reported cases involved cubs.
(READ SLIDE.)
The worst case scenario therefore, is that in captivity, READ SLIDE
A cub that drinks vitamin D-deficient milk, therefore, would also be subject to vitamin D deficiency and subsequent mineral inadequacies. In Dr. Kenny’s paper that I have referred to previously, measurements of vitamin D in milk from a polar bear sow with a 58d old cub revealed very high levels of vitamin D. Nonetheless, milk vitamin D content must be expected to vary with the diet and even possibly the stage of lactation.