 A 100g serving of baked chicken breast contains 4 grams of fat and 31 grams of protein, compared to 10 grams of fat and 27 grams of protein for the same portion of broiled, lean skirt steak.In factory farming, chickens are routinely administered with the feed additive Roxarsone, an organoarsenic compound which partially decomposes into inorganic arsenic compounded in the flesh of chickens, and in their feces, which are often used as a fertilizer.The compound is used to control stomach pathogens and promote growth.