Semen quality and reproductive performance after artificial insemination with boar sperm stored in a gelatin-supplemented extender

Abstract This study tested the effects of inclusion of gelatin in an extender for cooled boar semen on sperm quality during storage and reproductive performance after artificial insemination (AI). In Experiment 1, ejaculates from four boars were stored in Beltsville Thawing Solution (BTS) and BTS including 1.5% and 3.0% gelatin. Sperm motility and morphology were similar among extenders during 72 h of storage (P > 0.05). In Experiment 2, ejaculates from four boars were stored in BTS and BTS including 1.5% gelatin. Motility, normal morphology and membrane integrity declined over storage time for both extenders (P