The primary reason for anti-biotics is due to the fact that the farmers feed their livestock nutritionally devoid but massively cheaper corn - which weakens the

The primary reason for anti-biotics is due to the fact that the farmers feed their livestock nutritionally devoid but massively cheaper corn - which weakens the overall immune system. Antibiotics are not needed when "organic" measures are put into place and cows are free range and fed better, nutritionally beneficial foods to begin with. But that's costlier, so, not going to happen on a commercial scale, regardless of how inefficient and unsustainable it is to continue.