How much longer will cattle trend toward lighter slaughter weights?Today’s WASDE report lowered earlier estimates of total 2017 beef production based on lighter-weight cattle. This was despite a higher number being harvested and the trend toward even higher slaughter rates in the second half of the year.Current prices for fed cattle are strong and steady as a result of packers covering orders and the fewer cattle grading at choice, which has led to the former spending more for higher grade. That should all change, however, as record-high feedlot placements will lead to increased slaughter totals and bearish fed cattle prices later this summer. Slaughter is already running 5.7 percent ahead of last year with beef production up only 3.8 perce...