The definition and abbreviation for Potentially Hazardous Food (Time/Temperature Control for Safety Food) or PHF/TCS should be modified to drop the reference to potentially hazardous food and PHF.
Yes, as a treat apples are fine for chickens. Some will say it is best not to feed them too many apples as the seed of an apple has a small amount of arsenic in it.
Types of Chicken Feed. It may come as a shock to you, but chickens are not vegetarians. In fact, given the opportunity, a chicken will eat a very well balanced and varied diet of fruits, vegetables, greens, grains, insects, grubs and even meat. Since their natural tendency is to consume a variety of foods, it is important that you feed your flock accordingly.