U.S. Treasurys fell on Thursday after the government auctioned $64 billion in new debt .
The Treasury Department auctioned $29 billion in seven-year notes at a high yield of 1.590 percent. The bid-to-cover ratio, an indicator of demand, was 2.50, versus a recent average of 2.53.
The 10-year note was down 11/32 to lift its yield to 1.76 percent. Other maturities were also mostly off, while the seven-year note fell 7/32 in price to yield 1.56 percent.
Earlier, the Treasury sold $35 billion in five-year notes at 1.288 percent, the lowest yield since May 2013. The bid-to-cover ratio on that offering was higher than December's 2.39.
After three days of price increases that dropped the 30-year bond's yield to a record low on Wednesday, the 30-year was last off 13/32 in price to yield 2.31 percent after dipping to a record low of 2.273 percent on Wednesday.