Swim-up of tammar wallaby (Macropus eugenii) spermatozoa in Biggers, Whitter and Whittingham (BWW) medium: maximisation of sperm motility, minimisation of impairment of sperm metabolism and induction of sperm hyperactivation.

A variety of media were compared for their ability to sustain the motility of tammar wallaby spermatozoa over an 8-h period following swim-up from coagulated semen. The study demonstrated that a modified Tyrode's solution, Biggers, Whitter and Whittingham medium (BWW) was significantly better than any of the other assessed media in supporting wallaby sperm motility. After 8h of incubation in BWW, motility was maintained at 79.