By Carla Mozee
LOS ANGELES (MarketWatch) -- U.S. Treasury yields rose Wednesday afternoon following the Federal Reserve's announcement of a fresh bond-buying program worth $45 billion per month of longer-term Treasurys. The size and composition of the new bond purchases were in line with market expectations. Yields on the 10-year note 10_YEAR +1.27% , which move inversely to prices, rose to 1.68%, from 1.65% ahead of the Fed announcement. The yield on the 30-year bond 30_YEAR +1.55% moved up to 2.89% from 2.87%.