WSU Extension > WSU Livestock and Meat Evaluation > Lamb Lamb Lamb carcass evaluation centers on producing a lean, high-quality product for the American consumer. The content of this page will help producers understand the metrics that determine value of market lambs and lamb carcasses. Live to Carcass Evaluation Videos Week 1 sheep 1 Week 1 sheep 2 Week 1 sheep 3 Week 1 sheep 4 Week 2 sheep 1 Week 2 sheep 2 Week 2 sheep 3 Week 2 sheep 4 Week 3 sheep 1 Week 3 sheep 2 Week 3 sheep 3 Week 3 sheep 4 Week 4 sheep 1 Week 4 sheep 2 Week 4 sheep 3 Week 4 sheep 4