Cattle slaughter finished last week at a robust 651,000 head, up 1.3 percent from a year ago and up 26.4 percent relative to the week prior. Slaughter is forecast to move lower over the next six weeks. This week, slaughter is projected out at 640,000 head, up 1 percent from last year and down 1 percent compared to the week prior. Over the next six weeks, slaughter is forecast at an average of 621,700 head, down 1.7 percent from year prior levels. The slower production combined with the…