Cattle slaughter finished last week at 609,000 head, down 3.5 percent from a year ago and down 6 percent relative to the year prior. Slaughter is forecast to move higher over the next six weeks. This week, slaughter is projected out at 641,000 head, up 21 percent from last year. Over the next six weeks, slaughter is forecast at an average of 649,000 head, up an average of 0.9 percent from the prior six weeks and up 0.25 percent from the 2018/2019 average for the same time…