I know that to hatch crocodile eggs you need to provide the correct temperatures so that you get the right genders. I guess they would probably mostly want to hatch out whichever gender is the largest so they can get the most leather from it.
When I was living in Africa I made friends with a man who had designed all kinds of incubators so he could sell the chicks.
He had turkeys and chickens and ducks, and even a goose egg incubator.
It was quite extraordinary considering he built them all himself from scratch with very little money. He had made himself one of the more wealthy men in town with his innovations.