TREASURIES-Bonds extend gains after solid 30Y auction

NEW YORK, May 8 (Reuters) - U.S. Treasury debt prices extended gains on Thursday, after a $6 billion auction of reopened 30-year bonds generated solid bidding.

The bid-to-cover ratio, an indication of demand, was 2.69, above the long term average of about 2.1 since the maturity was reintroduced about two years ago.

The 30-year <US30YT=RR> bond's price, which moves inversely to its yield, traded up 12/32 for a yield of 4.586 percent versus 4.599 percent just before the auction results and versus 4.61 percent late Wednesday.

(Reporting by John Parry, additional reporting by Richard Leong; Editing by Chizu Nomiyama)