ILLINOIS STATE DAIRYMEN'S ASSOCIATION. I $$ 



COMPOSITION OF MILK. 



Percent total 



Breed. fat solids 



Polled Jersey 4.66 13.93 



Guernseys 4.60 13.92 



Jerseys 4.58 13.96 



French Canadian 3.99 13.32 



Red Polled 3.98 13.14 



Ayrshires 3.69 12.69 



Brown Swiss 3.63 12.76 



Short Horns 3.57 12.84 



Dutch Belted 3.40 12.31 



Holstein 3.25 12.08 



INCREASE IN PER CENT FAT DURING PAN-AMERICAN. . 



During the six months every one of the fifty cows made a gain, in 

 richness incident to the advance of lactation period. By averaging the 

 four weeks composite tests for each cow, for the last month separately, 

 we have a basis for determining this gain without having to contend with 

 the fluctuations from week to week caused by things seen and unseen. 

 •Comparing these averages for the months of May and October we find 

 every cow gained, from the Guernsey, Cassiopia, with a gain of only 1 

 per cent, to the Polled Jersey, Queen, with a gain of over 2 per cent. 

 The gain in richness of the mixed milk of the five cows of each breed 

 was as follows: French Canadian, 1.1 per cent; Jerseys, .93; Guernseys. 

 .9; Shorthorns, .9; Polled Jerseys, .8; Brown Swiss, .7; Red Polls, .6; 

 Ayrshires, .6; Holsteins, .52; Dutch Belt, .5. 



Of the 50 cows, twenty-eight averaged to test higher for each month 

 Of the six than for the preceding month. Eleven cows missed this uniform 

 progression by testing lower for some one month than for the some pre- 

 ceding month. The other eleven did not increase in test with such uni- 



