Spermatozoa subjected to cryopreservation are very sensitive to a rapid reduction in temperature from 25 to 5 °C [1] and [2]; this produces cold shock, a membrane transition phase behavior exhibited by biological membranes [3]. Cold shock results in a loss of selective permeability and integrity of the plasma membrane [4], a release of intracellular enzymes [5] and lipids [6] and [7], a redistribution of ions [8] and [9], and a change in the membranes of the acrosome [10] and mitochondria [11], loss of motility, and diminished metabolism.