Maidon rasvan ja valkuaisen keskinäisestä suhteesta

The investigation involves 75 cows from 12 herds of the race of Finnish Cattle. The fat and casein content of the milk of these cows was determined once a month during one lactation period. For various reasons it has been impossible to get milk samples from every cow every month. Therefore the number of analyses is smaller than the number of cows. The casein content was determinet by using formalin method and the fat content by using the Gerber method. The mean percentages of fat and casein have been calculated from the results and the correlation coefficients separately for every production month. The results are given in the table and the figur