Take chickens, you can simply have them walk around in a yard and have a coop for them to go to sleep in at night, rather than keep them in caves their entire l

Take chickens, you can simply have them walk around in a yard and have a coop for them to go to sleep in at night, rather than keep them in caves their entire life and feeding them antibiotics. It's a bit more space, which there's plenty of in South Africa and the USA, but otherwise your capital expenditure shouldn't be more.