survivability of livestock

[NorthernRaider]

My group has neither the numbers nor the skills to manage farm critters, but rather than leave them starve to death cooped up in farm building of small fields we reckon that letting them free at least gives them SOME chance, Porkers sould thrive cos they are inteligent, Sheep are used to living for long periods unattended, I reckon the local Bison, Deer, Longhorn and Highland moocows should get by proving they can find grazing and woodland to over winter in. Even if they dont breed they can live for years thus providing us with beef on the hoof for a long time, thats got to be better than dying of thirst cooped up in a barn cos the farmer is dead or gone.