Protein concentration was greater in organic milk compared
to either conventional or rbST-free milk. This difference
could be a result of processor manipulation or
farm management. Possible farm-management effects
that could be responsible for greater protein percent of
milk are: a greater proportion of milk from the Jersey
breed compared to Holstein cows; less reliance on fat
supplementation of the cows’ diets; or lower-producing
cows typically have a greater concentration of protein in