About matrices of feed enzyme preparations

Abstract. The concept of a "feed enzyme matrix" has become widespread over the past 10 years. It is used to quantify the increase in nutrient utilization of a feed by the action of feed enzymes.The factors that change the matrix values of enzymes are given. Due to the impossibility of substantiating stable values of matrices, in official instructions the values of matrices are virtual, therefore, they are not subject to control. In the instructions for the use of enzyme preparations approved by the «Rosselkhoznadzor», matrix values of enzymes are not given, because they do not meet the requirements of the regulatory organization.