As half of almost every life in mammals is generated from a spermatozoon, it is interesting to conduct research on this cell. “Sperm cryopreservation”, one of the interesting topics, means long-term storage of male gametes at sub-zero temperatures. Many factors influence the quality of post-thaw spermatozoa and therefore the success of sperm cryopreservation such as freezing media, cryoprotectants, freezing and storage temperatures as well as storage time. These factors have been studied and/or reported, as original research, brief communication and review article, by Dr. Kakanang Buranaamnuay.

1.Buranaamnuay K. Effect of different permeable cryoprotectants on the quality of cat epididymal spermatozoa. CryoLetters 2020. 41(4): 237-244.

2.Buranaamnuay K. Comparison of different methods for sperm vitality assessment in frozen-thawed Holstein bull semen. Thai J Vet Med 2019. 49(3): 249-255.

3.Buranaamnuay K. Cryopreservation and storage of cat epididymal sperm using ‒75°C freezer vs liquid nitrogen. Anim Reprod Sci 2018. 191: 56-63

4.Satitmanwiwat S, Promthep K, Buranaamnuay K, Mahasawangkul S, Saikhun K. Lipid and protein oxidation levels in spermatozoa and seminal plasma of Asian Elephants (Elephas maximus) and their relationship with semen parameters. Reprod Dom Anim 2017.52: 283-288.

5.Buranaamnuay K, Sangsuwan P, Changsangfa C, Faisaikarm T, Kaeoket K. Influence of discontinuous PureSperm® and OptiPrepTM gradient centrifugations on bovine sperm quality and the sex ratio of in vitro produced embryos. Chiang Mai J Sci 2015.42(3): 637-649.