The effect of four commercially available extenders on motility of chilled stallion semen over time

摘要

Semen extenders are routinely added to semen intended for AI once the gel fraction has been removed in order to preserve the ejaculate for a prolonged period of time. A number of commercially produced extenders are available; these can be egg yolk ormilk based and can contain antimicrobial agents depending on the manufacturer. The composition of semen extenders is known to have effects on sperm integrity and survival (Pagl et al, 2006). The aim of this study was to differentiate the effects of fourcommercially available semen extenders- INRA, ARS, Kenney and Minitube- on the progressive motility of chilled stallion semen without accounting for other parameters.