Would you consider animals to be "humanely raised" if they were forced to spend their lives suffering from chronic leg problems and crippling lameness only to be later dipped into an electrified vat of water?
Today's industrially produced birds have been selectively bred for enormous body mass. Many of them cannot stand or walk after a few months of life. They are not healthy animals, and they suffer chronic pain.
Today, the New York Times covers two of the pitched debates in our society about animals -- the controversy over the use of chimpanzees in biomedical research and the industrial confinement of laying hens in cages for egg production.
The assurances from the egg industry that its operators maintain safe and clean facilities, treat animals humanely, and do it all at low cost are a charade. The eggs may seem cheap, but the costs are passed on in terms of health costs.