Or flat out not eating them.
Of course, that is a position that many people adopt due to recognition of animals' capacity to suffer, and I see a lot of merit to it. I personally think it is more feasible for the time being to push for more humane treatment of animals even when they're eaten, because I don't think it is realistic to expect meat eating to disappear anytime soon. More humane farming conditions would still widely and significantly reduce suffering even if meat were still commonly eaten.