A progressive improvement of fertility over time was observed mainly due to adaptive procedures associated with an introduced technology. The mean (±SD) total number piglets born were 12.5 (☓.9). Of 2696 recorded services, 2122 (78.7%) of the females farrowed. Sows and gilts were inseminated three times PM/AM/PM and AM/PM/AM, respectively. They have coextruded colored bands on the external surface to facilitate identification. The external surface is smooth, the internal one instead has lines useful to guarantee greater sliding of the cable inside. Within 2-5min of thawing, the sows or gilts were inseminated via intra-cervical deposition using a standard AI pipette. Single mini-tubes with different external diameters, used for the installation - even directly underground - of optical mini-cables. For AI, eight straws were thawed (to achieve at least 2.0×10(9)motile sperm) and diluted with 60mL of extender pre-warmed to 26☌. Ninety eight percent of the ejaculates that were frozen showed at least a 50% post-thaw motility and were approved for shipment. For each frozen ejaculate, a post-thaw quality check was performed. Semen was prepared for cryopreservation using Androhep(®) CryoGuard™, packaged in 0.5mL French straws (average 500 million total sperm per straw) and frozen using a programmable freezer (IceCube™). The sperm-rich fraction was collected and only those collections having ≥80% motility and ≤15% abnormalities were further processed. Doses (4 x 10(9) sperm) from each ejaculate were exposed to 5 storage. All artificial insemination (AI) occurred on a single 1800 sow farm in Indiana, USA. For Objective 1, ejaculates from 18 boars were collected, analyzed and extended in Androhep to 50 x 10(6) sperm/mL. The frozen semen sourced from a boar stud in Manitoba, Canada. The objective in the present study was to assess application of frozen semen throughout a 4 year period comprising more than 2600 AI services. Little information exists on the long term use of frozen boar semen in commercial pork production operations. Albeit, frozen semen is an effective technology for the transfer of genes between breeding pyramids and also to reliably provide semen for planned matings. Less than 1% is inseminated using frozen semen. Worldwide, greater than 90% of sows are inseminated with fresh semen.