Factory farming does not yield wholesome milk.
In fact, Horizon is again under attack because of their addition of a DHA supplement to their product in order to raise the level of this health promoting substance.
In free grazing cows you will find that the DHA (an essential fatty acid) is in more than slim supply.
You'll also find in free grazing cows that a the company (unlike Dean Foods, producer of the Horizon brand) isn't adding a DHA supplement that is processed with the toxic chemical, hexane.
Organic Free Grazing Cows Are Cream Of The Crop
ScienceDaily (2008-05-30) -- Organic farmers who let their cows graze as nature intended are producing better quality milk. Milk from grazing cows on organic farms in the UK contains significantly higher beneficial fatty acids, antioxidants and vitamins than its conventional 'high input' counterparts. During the summer, one of the beneficial fats in particular -- conjugated linoleic acid -- was found to be 60 percent higher. ... > read full article