I've given them beet skins and pulp. ( I have a friend who juices occasionally.) They weren't that crazy about it. My chickens like lettuce, celery, breads, pasta, peas, corn, string beans if chopped up, spinach, oatmeal, mash, peppers chopped up. I've tried all kinds of foods and that's what my chickens like, and we are a mixed flock. They don't like citrus, apples, carrots. So far that's been consistently true.