Feeding animals especially in urban areas depends totally upon agro-industrial by-products such as sugarcane bagasse, wheat straw and sorghum straw. These by-products are low in nutritive value and digestibility, this book discus the effect of urea treatment on the chemical composition and rumen degradability of sugarcane bagasse and its possibility to use for fattening ruminants. Also this book provides information about cattle feeding and optimum utilization of feedstuff which contribute in reducing cost of production and increase benefit. this book is usefull for student and professionals in the field of animal production, particularly animal nutrition.