Panida CHANAPIWATKampon KAEOKETPadet TUMMARUKMahidol University. Faculty of Veterinary Science. Department of Clinical Sciences and Public Health. Semen Laboratory2015-03-182017-04-072015-03-182017-04-072015-03-182012-03The Journal of veterinary medical science. Vol.74, No.3 (Mar 2012), 351-3540916-7250https://repository.li.mahidol.ac.th/handle/20.500.14594/1664The present study determined the effect of different types of sugars (lactose, fructose, glucose and sorbitol) used in egg yolk-based extender on the post-thawed boar semen quality. Twenty-two ejaculates from 6 fertility-proven Yorkshire boars were cryopreserved by liquid nitrogen vapor method. Sperm motility, viability, acrosome integrity and intact functional plasma membrane were determined at 0, 2 and 4 hr after thawing. It was found that the lactose-based extender resulted in a higher percentage of post-thawed sperm motility, viability, intact acrosome and functional plasma membrane than sorbitol-based extender (P<0.05) and fructose-based extender yielded a higher post-thawed sperm motility and viability than sorbitol-based extender (P<0.05). It could be concluded that sorbitol was not an effective sugar for the cryopreservation in boar semen.engMahidol Universityenergysperm freezingsugarswineOpen Access articleCryopreservation of boar semen by egg yolk-based extenders containing lactose or fructose is better than sorbitolArticleThe Japanese Society of Veterinary Science10.1292/jvms.11-0273