Which sciences are used in modern animal breeding programs?

Modern animal breeding programs rely on the integration of several scientific disciplines to improve the desirable qualities of livestock. These programs utilize knowledge from the following fields:

• Genetics: This is fundamental to understanding heredity, gene action (additive, dominance, and epistatic), and the genetic variation necessary for making progress in successive generations.12
• Molecular Genetics: This field allows for the study of DNA and the identification of specific genes or chromosomal segments associated with economically significant traits, facilitating more accurate selection.23
• Statistics: Statistical methods are essential for evaluating and ranking animals. Breeders use statistical models, such as the "animal model," to partition performance records into genetic and environmental effects.24
• Reproductive Physiology: This science supports the development and refinement of technologies like artificial insemination, superovulation, and embryo transplantation, which increase the reproductive rate and selection intensity.526
• Computer Science: High-speed computing and advanced numerical analysis are required to process large-scale breeding evaluations and solve complex systems of equations involving millions of variables.24

Additionally, fields such as immunogenetics are increasingly relevant for managing animal health and disease resistance.72