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BrownfieldAgNews reports:

A new study published in the Journal of the American Dietetic Association finds very little difference in conventional, rbST-free and organic milk.

The study involved researchers from the University of Missouri-Columbia, Penn State University and Monsanto. Milk samples of all three types of milk were collected from all 48 contiguous states and tested for bacterial counts, antibiotics, fat, protein, solids-non-fat and hormone composition.

The study found minimal differences among the three types of milk. Conventional milk had a slightly lower bacteria count than organic or rBST free and lower levels of estradiol and progesterone than organic milk. There were no differences in the level of somatotropin (bST) in the three milks. Insulin-like growth factor-1 (IGF-1) levels were similar in conventional milk and rbST free and a little lower in organic milk. Organic milk had .1% higher protein content than the other two.

The study concludes, "Label claims were not related to any meaningful differences in the milk compositional variables measured. It is important for food and nutrition professionals to know that conventional, rbST free and organic milk are compositionally similar."

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