Ground rent creates a better environment:
more parks, more forests, more wildlife.
Ground rent pays for any desired investment.
So existing welfare laws will be better enforced.
Ground rent lets you choose your ideal government:
choose one that cares about animal welfare.
Faster economic growth brings more scientific advances.
When artificial meat is better and cheaper than "real" meat, the economic case for abusive factory farming will disappear. Animals' value to humans will be then be their beauty and companionship.