Kingmambo, leading North American sire of 2004 on The Blood-Horse ranking by international earnings, has been removed from breeding temporarily because of a leg injury but is expected to return in less than a week."He cut his leg behind the knee and it got infected, but it's now on the mend," said William S. Farish, owner of Lane's End Farm, the Versailles, Ky., operation where the 15-year-old son of Mr. Prospector -- Miesque, by Nureyev, stands. "It got swollen like a leg can do. But he'll be back in action in four or five days."Farish said the problem is unrelated to a condition Kingmambo had last year. "He had a little bit of a neck problem last summer, and that's basically what that was," he said. "The problem at the moment is the leg, and when we get the swelling down he'll be fine."Kingmambo, whose 2005 live foal stud fee is $300,000, covered eight mares once the breeding season began, according to Farish. "Then this came up and it just curtailed his activity for about a week," he said.Kingmambo enjoyed his best season at stud in 2004, with 15 stakes winners and international earnings of $10.9 million, paced by Japanese champion 3-year-old colt King Kamahemeha. The $3.7 earned by the Japanese champion helped push Kingmambo up from 18th on the 2004 list by North American/European earnings to No. 1 on the list of North American sires ranked by international prize money.