1. Department of Agronomy and Horticulture University of Nebraska‐Lincoln 1875 N. 38th Street Lincoln NE 68583 USA
2. Department of Agronomy and Horticulture University of Nebraska‐Lincoln Panhandle Research and Extension Center 4502 Avenue I Scottsbluff NE 69361 USA
3. Department of Animal Science University of Nebraska‐Lincoln Lincoln NE 68583 USA