Hi,

I know chickens can get stressed out by normal Tl tubes in the barn. there are many examples of that. In Holland we use high fequency tubes inside so that the chickens don't see blinking lights all day.That can really slow their egg procuction down. I don't think normal incandecent or halogen lights are a problem though, beause they work differently, and they are most commonly used in monitor cages. A TL in the room itself will be less of a problem if it is several yards away.
It is probably hard to tell if it irritates monitors, I mean the chickens don't die or stop growing from normal TL or anything, it just makes them less productive, which is hard to measure in monitors if you don't produce them on an industrial scale.

Jasper

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