This book is also helpful for graduate, postgraduate and doctorate students pursuing studies in veterinary dairy, agriculture, fisheries, and other related sciences and provides them a first hand information on important aspects related to contribution of livestock to national income, community development, panchayati raj, livestock development programmes, audio-visual aids, extension teaching methods, programme planning, adoption and diffusion process, livestock marketing as well as animal husbandry management and administration. We are sure that this book will be beneficial for professors, teachers, trainers, researchers and extension professionals engaged in veterinary and animal husbandry extension and other professional courses.