Straw in the diet of growing heifers “strongly influences” sorting behavior, according to Canadian research in the July Journal of Dairy Science. However, diluting the diet with 10 percent or 20 percent straw can still be done without hurting growth potential and feeding behavior.
During the study, researchers at the
Sorting behavior. Sorting for medium, short and fine particles increased linearly as straw in the diet increased.
Dry matter intake. Intakes decreased linearly as the amount of straw in the diet increased.
Feeding behavior. Feeding time and meal duration increased linearly with the addition of straw in the diet. However, feeding rate, meal size and meal frequency decreased with the addition of straw.