We have a mixed flock of LS, speckledy, pure RIR, RIR/LS cross, legbar, welsummer and some mungrels we inherited. Most of our birds are 2013 hatch, some 2012 and some of the odd ones maybe older.
It looks like we might have myco in the flock, a few sneezes here and there and poorly hen (see other thread). But we use ACV and keep everything clean so we are hopeful it won't be a huge problem. It does mean that until we are sure, we won't be adding birds or moving birds on anywhere else. So, it's a closed flock but laying well. If we have got myco then at some point they will all have to go and we'll have to move the whole operation to another field, well away with new hens.
So, question is, what is the likely performance of hens as they get older. We know the industry is only interested in the first 18 months. But we get probably on average about 200 eggs per bird, going on this year, rather than the 320 of a laying machine.
Can I expect this batch of hens to go on laying for 2-3 years at a decent rate? I'm told not but thinking back to my childhood, my mum use to pick up ex bats and we had about 100 and they only ever got culled when they were old and giving up. We never culled for laying performance reasons. Lots of eggs as I recall too.