Development of Hull-less Barley Varieties as an Improved Feed Crop

R.L. Paris, C.A. Griffey, and M.E. Vaughn
Virginia Tech, Department of Crop and Soil Environmental Sciences
Blacksburg, VA

Winter barley is very well suited to the mid-Atlantic region, fitting well with the cropping systems and potentially providing grain for the poultry and swine industries in addition to current uses. Hulled barleys have not generally been fed due to the high fiber content, and hulless barley has not been utilized due to the lack of varieties for the mid-Atlantic region. Development of hulless barley lines for the region has begun, and yield evaluations over the past two years have determined that these initial lines yield within 1700 lbs/A of hulled barley, and 665 lbs/A of wheat. Test weights of hulless barley generally are similar to that of wheat. Six hulless lines, two hulled checks, triticale, and wheat were analyzed for true metabolizable energy, protein, fat and fiber content. Analysis of the data indicates that hulless barley possesses a combination of the desirable nutritive traits of wheat and hulled barley. It is high in true metabolizable energy and fat (similar to the hulled checks), and is high in protein and low in fiber (similar to the wheat checks). Also examined was the effect of substituting 20% barley (hulled vs. hulless) in the standard corn/soybean diet of broiler chicks. The ration including hulless barley did not significantly differ from the standard diet for rate of gain, while the hulled barley yielded a significantly lower rate of gain when compared to the standard and hulless supplemented diets. The results of the study indicate that hulless barley has the potential to produce yields similar to that of wheat with a combination of positive nutritional qualities from hulled barley and wheat. Additionally, when fed to broiler chicks, it may provide an advantage in the cost per pound of gain over traditional diets.