Semen samples exposed to various cryoprotectants were frozen at various cooling rates (3, 5, 10, and 12 C/min) from an initial temperature of
25 C to a final temperature of –40 C prior to storage in liquid nitrogen for 1 wk.
Within a column, means without a common superscript differed (P < 0.05).
Within a row, means without a common superscript differed (P < 0.05).