"We did allow Livorno a few too many scoring opportunities," mused Coach Ferrara after a fourth straight win.
"In my view, at the moment our performances are affected by tiredness. There are so many games to play and we have a lot of internationals, so it isn't easy to get your energy back when playing constantly.
"We took on a team that played wonderful football. Buffon made some great saves, even if it's true that we also created more chances. It's fine with the three points, but we must continue to improve."
Ferrara was also called to comment on the development of youngsters Sebastian Giovinco and Marchisio.
"Sebastian often lets himself get caught with his back to the goal, so he is easier for the defender to mark.
"Clearly Giovinco is very talented and interesting, but every day he must feel like there is something new to learn and improve upon to earn this shirt. That is true of everyone at a club like Juventus, whether they are young or old.
"Marchisio is doing great work and what's more I can field him in numerous different positions. His technique is also superb."