Cattle slaughter finished last week at 665,000 head, down 0.2 percent from a year ago and down 0.3 percent relative to the year prior. Slaughter is forecast to move lower over the next six weeks. This week, slaughter is projected out at 660,000 head, down 1.3 percent from last week. Over the next six weeks, slaughter is forecast at an average of 580,800 head, down an average of 9.5 percent from the prior six weeks. With production interuptions expected to close out the year, it’s…