The Doug Maddox Family
Riverdale, California

The Doug Maddox family operates two dairies, collectively managing 12,000 Holsteins with approximately 5,400 milking animals.  Based in Riverdale, California, these farms combine to form the largest Registered Holstein dairy in the United States.  The highest priority at RuAnn and Maddox Dairy is not only to breed and develop an elite high quality dairy herd, but to also provide a stress-free environment to enable their cows to produce quality milk at their highest, most efficient production level.