Kean also revealed that Grant Hanley will miss the rest of the season with an ankle injury, but Yakubu and Junior Hoilett should be fit for the run-in, where he believes that they will require seven points to remain in the league.
"I think we were a little bit loose in our passing, but I felt that Swansea were very active, really aggressive on the pressing side of it, they made it difficult for us to take time on the ball," Kean told Sky Sports News.
"I think Grant's [injury] is serious, Yakubu's had a knee problem before and Junior is a precaution... I think we need a minimum of seven points [to remain in the league], so that's what we will be aiming to do."
Blackburn remain in 19th spot in the Premier League table.