dairy symposium: Nutritionally Improved Corn Grain Hybrids: Influence on the Feed Industry and the Feeding of Dairy and Beef Cattle: Nutritional Benefits of Specialty Corn Grain Hybrids in Dairy Diets

摘要

Corn grain is a primary energy supplement in dairy diets and can contribute up to 30, 60, and 98/100 of the diet's protein, net energy, and starch, respec- tively. Specialty corn hybrids are one result of efforts to select corn based on nutrient content. Many of these hybrids, which include high lysine, high oil, waxy, white, and sugary, among others, have been the subject of renewed interest because of improve- ments in agronomic performance, commitments by marketers to preserve the identity of specialty grain, and improvements in our understanding of digestion and nutrient requirements.