It is also remarkable to report that slightly
alkaline pH (7.6) of D2 made a significant
difference in supporting WAD buck sperm cell
motility compared to virtually neutral pH values
7.1 and 7.0 of D3 and D4 respectively. The pH
value 7.6 (alkaline) of D2 was contrary to
slightly acidic pH values of buck semen reported
by Oyeyemi et al3. However, it was surprising
that acidic extender D6 with pH similar to
bucks’ semen reported by Oyeyemi et al3 did not
give any appreciable support to motility of
extended sperm cells. The same reason of high
viscosity of this extender might be responsible
for this observation.