Preservation of Channel Catfish Sperm

Abstract
Three activators, 8 extenders and 3 protective agents at 2 concentration levels each were used to determine the best combination that will maintain in storage the viability of channel catfish (Ictalurus punctatus) sperm cells. There was a highly significant (P < 0.01) difference in motility score among activators. Saline (0.65%) gave the highest motility score. Extended sperm cells became motile when activated after 2 mo. of storage at 4.degree. C. Extender I (Truscott and Ilder''s Hfx no. 1) with 10% dimethyl sulfoxide (DMSO) and 2 h equilibration produced the highest motility scores after freezing of 24 h or 1 wk. Freezing rate was controlled by placing vials of sperm in a double-layered, kapok-lined paper bag and freezing at the height of 127 mm above the liquid N level.

This publication has 5 references indexed in Scilit: