Table 2. Mean percent value (± standard error) of total motility and vitality recovery rates for samples from different groups after freezing.
  GROUP 1
(CONTROL) 		GROUP 2
(DRY ICE) 		GROUP 3
(DRY ICE + NITROGEN) 		GROUP 4
(TRANSPORTED)
  		GROUP 5
(TRANSPORTED + NITROGEN)
 
MOTILITY (%) 71.9 ± 4.7a 56.7 ± 4.6b 52.7 ± 4.5b 52.8 ± 4.8b 53.0 ± 3.7b
VITALITY (%) 63.9 ± 2.6a 53.7 ± 2.4b 48.6 ± 2.8b 50.6 ± 2.5b 46.7 ± 2.7b
*Different letters in the same row differ. P <0.05.