Effects of extenders and cryoprotectants on cryopreservation of Thai red junglefowl (Gallus gallus gallus) spermatozoa.

Semen cryopreservation is crucial maintain genetic diversity of avian species. Little is known about suitable extenders for post-thaw survival of spermatozoa from Thai red junglefowl (Gallus gallus gallus). Therefore, the present study aimed to compare the suitability of the modified Thai red junglefowl extender (TRJFE) for cryopreservation of Thai red junglefowl spermatozoa with other extenders, including the Schramm extender, the red junglefowl extender (RFE), and the HS1 extender, in terms of sperm viability, motility, and fertility.