These animals are generally under regimens of constant
>medication due to the tortures involved and their heightened
>susceptibility to diseases: automated animal production relies upon
>hormones and antibiotics.  Such systematic cruelty, not to mention the
>kind of food that results, brings to mind the fact that captivity itself
>and every form of enslavement has agriculture as its progenitor and model.
>
>

But it is not just the factory, modern type of husbandry that is a problem
environmentally.  Throughout the world forests have been felled and kept
from regrowing because of grazing.  Right now millions of acres of
rainforest are systematically turned into grazing land, and will never
return to forest.