No, it's not the heat.....wait, you're kidding, right?@aart ...lol my light theory caused quite the discussion here at home.... I had to go ask the DH about it; he's the brain on the lighting issue... And he told me, in a way lol, that my theory is flawed...
I forgot that they were different BREEDS.
What we decided lol, was that it wasn't a specrum OR a lumen thing, but the HEAT. It was keeping the temps 20 degrees warmer, and THAT is what induced them to keep laying. His theory being that chickens that get daylight already during normal light wont need additional UV light, just supplemental for the 4 hours that's missing.. The warmth is what triggered them to keep going...
We were talking industrial versus backyard though... A giant enclosed barn where they never see the light of day would be the situation calling for proper wavelengths...
Lol see, I don't just derail threads in here, I do it at home too