This book explores the application of biotechnology in improving livestock health and productivity, highlighting innovations that enhance disease resistance, nutritional efficiency, and overall animal welfare. It examines how biotechnological tools such as vaccines, diagnostics, and genetic techniques are reshaping livestock management. The text integrates scientific foundations with applied strategies, demonstrating how these technologies can improve food security and sustainability in agriculture. It also addresses ethical considerations, regulatory issues, and challenges in implementing biotechnology across diverse farming systems. By providing both theoretical insights and practical examples, the book equips readers with a comprehensive understanding of the role biotechnology plays in advancing animal health. Suitable for students, researchers, and professionals, it serves as a valuable reference for those engaged in veterinary science, agriculture, and biotechnology-driven development.