Wasn't the problem with poultry processing the fact that the birds were allowed to be held in tubs (probably not the correct term, but the idea is right) of water, absorbing significant amounts of water which adds weight with the water being sold for chicken prices, AND some fecal material was absorbed along with the water?
I recall NCBA, or probably a predecessor organization as it was several years ago, fighting to get that practice eliminated. But don't recall if it was actually ended or not. The 'yuck factor' probably was helpful in that effort, but due to chicken always being cooked thoroughly, there was probably not a lot of danger from actually eating whatever got absorbed into the meat, just not right for that business to subject consumers to the contaminated water in order to make more profit.
mrj