The thrashing lifted Barca above Real Madrid at the top of the La Liga standings on goal difference after three games.
Top-flight debutants Huesca took a shock early lead in their first league visit to the Nou Camp when Colombian forward Cucho Hernandez deflected the ball in from point-blank range but Messi levelled in the 16th, cannoning a shot in off the post.
"We were asleep a little bit at the beginning [when Huesca scored], although that forced us to react".
Alex Gallar did give Huesca a second reason to celebrate late in the first half before the gulf in class become evident over a one-sided second period.
Salcedo, en el grupo de la muerte — Sorteo Europa League
Los únicos jugadores del país que se enfretarán en esta ronda son Falcao y Arias, quienes comparten el grupo A . El luso es el máximo ganador del galardón, con tres premios , seguido por el argentino Lionel Messi (2).
That only awakened the champions as they hastily overturned the deficit, Messi driving a right-footed finish into the bottom far corner before Pulido turned Alba's cutback into his own net eight minutes later.
Barca emerged from the dressing room in the Barcelona vs Huesca game to hit five goals, in Ousmane Dembele starting the rout with an angled drive that beat Werner on 48 minutes. Rakitic completed a Messi assist for Barca's fifth goal in the 52nd minute. That score came after Jordi Alba ran down to the end line and attempted to fir a pass in toward Messi.
"I think that we're getting there in terms of tempo and that's the main thing".
The Portugal captain had scored 44 goals in all competitions last season and hit four, including a hat-trick, at the Fifa World Cup earlier this year.
Star men Messi, Suarez and Dembele crucially look to be functioning on the same wavelength and, with the supply lines of Alba and Philippe Coutinho in full working order, there should be no concerns over the potency of last season's top scorers.