SALT LAKE CITY — The Lakers’ 11-game winning streak ended tonight, with the Utah Jazz building a 17-point lead in the second half and holding on down the stretch. Ron Artest, Kobe Bryant and Pau Gasol each scored 16 points, and Derek Fisher had 15. Bryant was off his form because of a stomach ailment and a fractured right index finger. Deron Williams led the Jazz with 21 points and 11 assists. Ronnie Brewer and Wesley Matthews added 19 each. The Lakers lacked the spark that carried them during their streak. Bryant’s illness and injury had something to do with it. So did playing on consecutive nights.