Comparison of different freezing extenders for semen cryopreservation from stallions with poor and good semen freezability

s / Journal of Equine Veterinary Science 34 (2014) 60 60 agreement with a prior study [3] where stallion epididymal sperm were frozen with different extenders. The results of this study allow us to conclude that frozen semen with the extender BotucrioTM presents better sperm kinetic param- eters after thawing when compared to other commercial extenders and that the differences were more evident when stallions with poor semen cryopreservation were used. References [1] Squires EL, et al. Cooled and frozen stallion semen: animal repro- duction and biotechnology laboratory. Colorado: Colorado State University (Bulletin no. 9); 1999. [2] Alvarenga MA, Papa FO, Landim-Alvarenga FC, Medeiros ASL. Amides as cryoprotectants for freezing stallion semen: A review. Anim Reprod Sci 2005;89:105–13. [3] Papa FO, Melo CM, Fioratti EG, Dell’aqua Jr JA, Zahn FS. Freezing of stallion epididymal sperm. Anim Reprod Sci 2008;107:293–301.