As I drive through the countryside, I pass many farms with cattle. Often times the cows are penned into a very small space. They are standing or lying in their own excrement without a blade of green grass in sight. No animal should have to experience that sort of treatment.
For the heath of the livestock, I would like to tell the farmer to let his cows roam. They should be able to walk over pastureland. They should be eating fresh grass and breathing fresh air and absorbing the sun. When they lie in their own muck, they are getting filthy and are taking in all sorts of harmful bacteria.
Let the cows wander. The land is there. Open it up for them to walk on. It is more natural and would benefit the animal.