A typical mixed feed today consists on average of eight to twelve single feeds and up to 15 additives. The most important single feeds in terms of quantity are the various grain types such as wheat, barley and corn, followed by rapeseed and soybean meal. Animal feed additives are minerals, vitamins, amino acids, trace elements and enzymes.According to current figures from the German Farmers’ Association, feed mixtures account for around 14 percent of farm animal feeds in Germany. Basic feeds account for 54 percent and single feeds for 32 percent.