Animal husbandry, agriculture and allied activities have been the core livelihood for majority of the rural people since time immemorial. It provides productive employment, especially self employment and the most valuable supplementary income to a vast majority of rural households, majority of which are small and marginal farmers and landless laborers. Livestock provide increased economic stability to the poor masses. this book include Due to their direct influence on poultry and livestock production economics, chapter on avian disease, fertility disorder and biotechnology has been included in animal health and production.