Relative Value of Carotene from Alfalfa and Vitamin A from a Dry Carrier Fed at Medium to High Levels to Holstein Calves

Abstract

Using a group of forty-eight 63-day-old male calves, the authors set out to determine quantitatively the relative value of carotene from alfalfa and of vitamin A from a dry carrier, fed at medium to high levels. Blood and liver concentrations of vitamin A and vitamin A depletion time were used as criteria. Editor.