We juice every day and keep a big bowl on the counter for the pulp, and any other scraps and leftovers that accumulate each day, then it goes to the chickens first thing each morning. They love it! I include everything you could imagine (including cucumber skins!) and they eat what they like (most everything) and leave behind anything they don't, which just composts itself on the ground. Old milk, yogurt, leftovers from our plates, juice pulp, veggie skins, scraps of meat, etc. The only things I can think of that we don't give them are bread/bread products and citrus peels (apart from the little bit of lemon skin that's in the juice pulp).
Plus, my husband works for a school district and the cafeteria lets him take all the leftover salad/raw veggies each day that would otherwise be thrown out! Some goes to our guinea pigs and the rest to the chickens - they're insane over broccoli and cauliflower, OMG. It's like chicken crack.