There are a lot of folks here who will tell you they don't need heat in the winter, except in the worst conditions. I'm buying into that, but I like the idea of giving them the light hours they want to stay productive. I feel the same way...I hate it when the days get short.
I think you mean the light hours you want so they stay productive!

From what I've read (no experience yet), leaving a light on during the winter will definitely boost egg production but it can throw off their molt and you may need to keep the light off all together for a brief period so that they can molt. I am fairly certain molting is important for good health. In addition, while adding lighting in the winter will increase egg production now, it may shorten the hen's lifetime productivity by shortening the number of years she lays and/or shortening the number of years she lives.
I am still on the fence about adding light or not. I have two brahma's and several other brahma owners on byc have noted good winter egg production without light. So I am going to wait and see how it goes I think. There certainly isn't a 'right' or 'wrong' answer, just depends on how you decide to raise and utilize your flock.
