Wellington Hurricanes continued their perfect start to the Super Rugby Pacific season with a sixth successive victory on Saturday.

The Hurricanes were seven-try 47-12 winners over the Otago Highlanders in Dunedin, though victory may have come at great cost with a serious leg injury suffered by Cam Roigard, one of the stand-out players in the competition.

The scrumhalf was one of seven different try-scorers for the visitors.

"We knew we had to start well and that is what we did in that first half, which is very pleasing," Hurricanes centre Jordie Barrett said.

"We are thinking of Cam, it is a massive blow for us and it will take its toll on our team. He is an unbelievable player."

Hurricanes top the table after six rounds with 27 points ahead of the Auckland Blues and ACT Brumbies (both on 22).