Motility patterns of boar spermatozoa after freezing-thawing using 0.5 mL straw (IMV, France) and the developed 0.25 mL straw. TM, Total motility; PM, progressive motility; RPM, rapid progressive motility; MPM, Medium progressive motility. Results are presented as the mean percentage ± SE. Error bars indicate the standard error of the mean (p > 0.05).