Tom Prydie scored a try and kicked the rest of the Dragons' points at Stadio Comunale di Monigo but the visitors had no answer to the greater attacking threat of the Italians, who ran in tries by Edoardo Gori, Christian Loamanu (2), Luke McLean and Tobias Botes.
The Dragons went ahead in the second minute as Prydie kicked his first penalty of the day, but Gori crossed for Treviso's opening try seven minutes later, with Alberto Di Bernardo adding the extras.
Di Bernardo's penalty further extended the home side's lead before Prydie reduced the deficit.
Loamanu crossed on 25 minutes to restore Treviso's cushion, while McLean added a third try before the break. Di Bernardo missed both conversions to restrict the hosts to a 20-6 half-time advantage.
Loamanu added his second try two minutes after the restart before Prydie crossed for the Dragons' sole try of the afternoon on 52 minutes.
Will Harries saw red after 61 minutes as the Dragons' discipline started to waver, and Treviso sealed the victory in the 72nd minute as Botes went over.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
$29.99
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.
