Getting dairy cattle rebred in a timely fashion is critical for dairy farm pro tability. To accomplish this objective, information is essential for arti cial insemination in dairy cattle, improving the detection of heat cycles, methods of pregnancy diagnosis in dairy cattle, and dairy cow reproductive management. The ability of a cow to successfully mate, conceive, give birth to and raise a healthy calf each year is essential to economical beef production. A good understanding of anatomy and physiology of both the male and female is helpful in successfully managing reproduction. Causes for failures in reproduction must be identi ed and overcome. These techniques in beef production provide many options to help modern beef producers accomplish their management goals.