It's important that the cattle pays for its own imprisonment. For example a cow's milk gets sold to pay for the fence. If the farmer where to pay for the fence

It's important that the cattle pays for its own imprisonment. For example a cow's milk gets sold to pay for the fence. If the farmer where to pay for the fence out of his own pocket, he would be creating negative karma, but if the cow pays for it, its a form of consent. You are are the Cow in this story.