The Argentine converted Arturo Vidal's cross in the first half to add to Marco Motta's earlier strike. Mirko Vucinic and Alessandro Matri each scored two goals in the second half, with 18-year-old Federico Mattiello's goal completing the rout.
"I am happy," said Conte. "I was impressed by our first half performance and the way Ogbonna, Tevez and Llorente settled in."
Tevez joined Juventus last month for a fee thought to be in the region of £10m.