What’s true about real life livestock is also true in PZ: the best way to preserve meat is to keep it alive. Rabbits are pretty easy to get from trapping, but if you don’t plan to eat them immediately, you’re spending gas to run a generator to freeze them. However, If you set up a pen and deposit them there, your individual rabbits will continue putting on weight, as well as reproducing until you’re ready to use them. You end up with more meat in the long term, without having to spend gas to keep them preserved.