It is the dramatic part of those studies. "Chickens dying from salt" and that's the sensationalism that's carried forward then somehow it becomes a rule. Years ago I got tired of hearing how sensitive they were, people saying they can't have any yet it's in feed, so researched the studies. It was eye opening for sure. I learned that sadists are in every profession of life. It's not just dentist! I mean, I'd have stopped the study at the point where birds stopped eating the food. I can't remember the percentage but that was ridiculously high as it was. Those sadists trudged on and started mummifying the birds from the inside out. Dehydration was the cause of death.