This encyclopaedia provides a comprehensive and analytical treatment of animal breeding, integrating genetic principles with practical methods applied across diverse livestock systems. It explains the scientific foundations of inheritance, selection, and reproductive management, linking traditional breeding approaches with modern genomic and statistical techniques. The discussion addresses trait evaluation, multi-trait modelling, and performance analysis, demonstrating how genetic improvement is measured and sustained within dairy and meat production systems. Attention is given to reproductive efficiency, resource optimisation, and adaptation to environmental pressures, including the implications of climate change for animal genetic conservation. The encyclopaedia also considers ethical dimensions and the responsible use of animals in scientific contexts, situating breeding practice within broader agricultural and societal frameworks. By combining quantitative methods with applied livestock management, it offers a coherent framework for understanding how genetic strategies enhance productivity, resilience, and sustainability in contemporary animal agriculture.

It is intended for postgraduate students, researchers, breeders, and professionals in animal science and agricultural biotechnology. The encyclopaedia serves as an authoritative academic reference and practical guide, supporting genetic evaluation, breeding programme design, and informed decision making in livestock development and conservation across global agricultural systems.