The foundation for reproduction is a sound year-round nutrition program that includes animals being in a positive energy balance (more energy coming in than being expended) before the breeding season and during early embryonic development.

Typically, producers that synchronize estrus do so to facilitate an A.I. program. However, there are some instances where application of an A.I. program is not feasible but advantages from synchronization of estrus are still desirable.

Development of replacement heifers is a long and thus costly process that becomes even more costly when heifers fail to re-breed or must be culled for reasons other than age.