But as to the science, I agree it's probably better to be over-informed and then take it from there than to be under-informed. Personally, I would also see if you can find any historical accounts about how people kept chickens through the winter in cold climates--you probably wouldn't find anything scientifically precise, but you might get some good ideas... just a thought...
Yes, luckily I'm 7 miles from an older ag university (South Dakota State University) and it has a very nice library with numerous older books in it. I'm figuring I will have to spend many hours down in their library basement digging through the older animal science books.
As for most of what I'm seeing on the forums, its impossible for me to supplement with soldier fly grubs and meal worms when the animals most need it, unless I want to LIVE in my house with the insects! There is no heat in any of the livestock sheds besides heat lamps. And from what I'm reading about heat requirements of the insects people are using as protein supplement in winter, they require 70+ temps. Not something I even have in my home in winter!!!
I'm dealing with sub zero temps. Today is sunny, but we're barely in the teens. I've resorted to designing a solar heated hen house, which we're planning on constructing this spring so that my girls can be warm in the winter months and then shutter off the solar panels during summer weather. That's my concept anyhow. We shall see how it works out.
Dog house is also going to become solar heated. LOL.
The next big "cold challenge" is water. EVERYTHING freezes, even heated dog dishes with water! So, I've got to figure out something different. I'm considering trying one of those galvanized watering fountains, on a galvanized heating platform. But placing over it a heat lamp, so the top is kept warm by the heat lamp, while the bottom is heated by the platform. Maybe then the water won't be frozen all the time.
Currently I take my duck hens HOT water bucketed out to the tub. By the time I walk those few feet outside it is already cooling drastically. It still has some steaming off it when its poured into their tub, but the girls have learned to quickly bath and drink their water, before it all begins freezing. I realize I don't "have to" have water all the time available, but I WANT TO as I know how much the cold zaps one's hydration from the body and I want them not just surviving, but thriving regardless of the season.
Any ideas would be appreciated.