Nutritional value of the grain of Kunitz-free soybean cultivars

Utilization of the raw beans for food and feed is prohibited by the presence of protease inhibitors. Breeding soybean cultivars for reduced amount of anti nutritional factors at Maize Research Institute Zemun Polje resulted in development of two new Kunitz-free cultivars - Lana and Laura. Feeding trials with pigs in different growth stages were conducted to compare the response of growing and finishing pigs to diets containing either raw or extruded standard and KTI-free (Kunitz trypsin inhibitor-free) soybean cultivars. The greatest improvement in growth performance was noted for the group fed extruded KTIfree soybean. This group achieved highest daily weight gain and gain per feed unit. Growth parameters for group of pigs fed raw soybean Kunitz-free cultivar were slightly reduced.