RESEARCH AND DEVELOPMENT OF A SYNTHETIC QUALITY INDICATOR FOR RAW MILK ASSESSMENT

摘要

Raw milk quality (RMQ) is an important factor in milk food chain safety. A marked improvement was observed in both compositional milk quality indicators (MQIs) and especially health and hygienic MQIs during the reference period. A good possibility forimprovement is in somatic cell count (SCC), but a consistent link of RMQ to the farmer price (FP) is essential. It was underestimated in the Czech Republic. The aim was to create a new synthetic RMQ indicator (SQSM) from various MQIs for consistently including each RMQ change into FP. An analysis of the properties of MQIs was performed: comparison of mean values of MQIs; exploratory analysis as normality testing of RMQ data files. MQIs were divided into 2 groups without and with the necessity of original data transformation before synthesis into the SQSM. A proposal of evaluation algorithm for synthesis of MQIs in relative MQI (SQSM) was made and validated for use at FP modification. The SQSM file showed an acceptable normality of data frequency distribution, obliqueness -0.23 and acuteness 3.60 (P<0.05) the deviation of which is practically negligible. Milk FP premiums and penalties could be balanced by SQSM.