The 'conventional wisdoms' about feeding into the winter months, or perhaps year-round, are developing. I think this is mainly because a lot of pond owners are heavily supplementing their fish with fish feed.

I've had fish hitting feed in Western PA when the water temp is 49/50 degrees. It takes a lot longer for them to hit it, and there are way less fish feeding.

In the south, I think you may be able to feed year-round, but the fish will tell you. Probably less feed going out and being consumed during the winter months, but still, it's happening.

I'd imagine that if your water temps stay above 50 degrees, you'll have takers.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."