When egg-laying hens at big factory farms get past their prime and don't lay as many eggs anymore they are often killed and disposed of or sent to be turned int

When egg-laying hens at big factory farms get past their prime and don't lay as many eggs anymore they are often killed and disposed of or sent to be turned into pet food. My farm would take as many of these older chickens as I can to let them live out the rest of their lives on a spacious farm where they have room to roam, and die of old age. I would still likely get some eggs out of them too (since they often still produce eggs, just not at a rate the factories deem profitable).