This book is beneficial for a variety of individuals, including graduate, postgraduate, and doctorate students pursuing studies in veterinary dairy, agriculture, fisheries, and other related sciences. It provides them with essential information on important aspects related to the contribution of livestock to national income, community development, panchayati raj, livestock development programs, audio-visual aids, extension teaching methods, program planning, adoption and diffusion processes, livestock marketing, and animal husbandry management and administration. It is also useful for professors, teachers, trainers, researchers, and extension professionals who are engaged in veterinary and animal husbandry extension and other professional courses. We are confident that this book will be a valuable resource for those seeking a comprehensive understanding of these topics.