The current AI industry is built upon the use of liquid semen stored in extenders that provide commercially acceptable fertility rates for a period of several days. For much of the last two decades, common practice has been to store extended semen at 17°C and perform 2-3 intracervical inseminations/estrus cycle using 1.5-3 billion sperm in a large volume (~70 ml). The swine industry has adopted production practices and the infrastructure required to produce, distribute and store these high quality semen doses from genetically superior boars at an economically viable cost.