GLOBAL MARKETS-Bond relief ebbs, stocks mixed as investors question Treasury's rescue efforts

U.S. government bonds sold off again following a brief reprieve on Thursday, pushing yields higher and keeping stocks under pressure as investors questioned whether U.S. Treasury support measures would provide lasting relief.

Yields on the 30-year U.S. government bond US30YT=RR rose 5.4 basis points to 5.247% after falling to 5.1765% earlier, a day after the Treasury's pledge to buy back more longer-dated debt stalled a sharp decline in bond prices. Yields move inversely to prices.

The moves were being closely watched to gauge markets' faith in the U.S. Treasury's ability to stem a rout that has sent shockwaves across multiple asset classes.

The benchmark 10-year yield US10YT=RR rose 4.7 bps to 4.7%, following a 5 bps fall on Wednesday. Yields on government bonds in Germany and Japan, however, eased.