I didn't write to convince you. I wrote for the benefit of those reading this thread who might be trying to decide whose opinion seemed more firmly based in facts supported by both scientific study and experience, and therefore trustworthy on this topic. Thank you for making their decision...
Diesel does damage to a gasoline engine, too, but that doesn't mean it should be taken off the market.
The subject is well studied, and widely accepted in the poultry science community. I've linked many of the studies here on BYC, but short lunch, no time to do so again now.
here's some...