Dec 11, 2017
Because of a ‘perfect storm’ of vitamin production problems, supplemental vitamins A and E are becoming scarce and prices are skyrocketing. Supplies probably will remain very tight well into summer of 2018. In this time of high vitamin prices and limited supply, vitamin supplementation strategies should be evaluated. The most recent dairy NRC (2001) has a vitamin A requirement of 50 IU of supplemental vitamin A/lb of body weight. For an average Jersey and Holstein cow, that translates to about 50,000 and 70,000 IU/day, respectively.