For the same match a year ago, Wales made 10 changes and gave the captaincy for the first time to Taulupe Faletau and they won at home by a convincing 38-14.
"We have made a number of changes this weekend, but have picked what we think is a very exciting team that still has huge experience throughout it", said Gatland in a Welsh Rugby Union (WRU) statement.
Italy scored the only try of the first half and only trailed 12-7 at halftime.
"I think there was a lot of frustration", Davies said, remarking that Wales had failed to generate enough points despite dominating territory and Italy giving up 11 penalties, nearly twice the number handed to the visitors.
Italy made the scoreline more respectable when Allan exploited a gap and teed up Edoardo Padovani into the right corner. Wales are on the up, Italy are fighting for their lives.
Their 16-point turnaround in the win over France last weekend was the biggest half-time comeback in any Five or Six Nations match. We wanted to give everyone in the 31 an opportunity to be involved in the first two games.
We didn't really get out of jail.
From that point, a lot of people will look to criticise us but you have to give Italy some credit for how they played.
But Gatland warned: "Italy will be hurting after last weekend, but they are a different proposition in Rome".
We're two from two and we have a couple of weeks of training before England and this sets us up nicely for that match. "It should be a tasty one", Davies, captaining the side for the first time on his 70th appearance, told ITV Sport.
Italy coach Conor O'Shea, who ushered in a new brand of attacking rugby when he took over in 2016, could come under growing pressure to reconsider his tactics.
Josh Adams and Owen Watkin scored a pair of tries after the break but there were too many errors to push for a bonus-point win.
Ireland captain Rory Best praised the strong performance of Carbery, who replaced Sexton and played an influential role during the second half after throwing the intercepted pass that led to the only Scottish try.
"I can't fault the boys' effort", he said.