Variations in carotenoids, fat-soluble micronutrients, and color in cows' plasma and milk following changes in forage and feeding level.
J Dairy Sci. 2006 Jul;89(7):2634-48. doi: 10.3168/jds.S0022-0302(06)72340-2.
J Dairy Sci. 2006.
PMID: 16772583