USDA reported that the combined total of all cattle and calves in the United States and Canada on 1 July 2015 showed an increase from last year. However, each country's rate of herd rebuilding is at a different level. U.S. and Canadian Cattle Inventory According to a USDA report, the combined total of all cattle and calves in the United States and Canada was 111.4 million head on 1 July 2015, up 2 percent from last year's 109.6 million. Of that total, the 44.5 million cows and heifers that have calved represent a 1 percent increase from 2014. The report shows strong herd rebuilding in the U.S. with heifers for beef cow replacement up 7 percent over last year at 4.9 million head. Cows and heifers that have calved in the U.S. are up 3 perce...