18 ILLINOIS STATE DAIRYMEN'S ASSOCIATION 



Milk and Butterfat Production. 



In milk production the ranks of the four seasons were 

 as shown in Table 3 : 



TABLE 3. — Seasons when cows freshened ranked according to average 



yield of milk. 



Number of times ranked 

 Season of freshening First Second Third Fourth 



Spring 7 13 24 20 



Summer —-10 4 19 29 



Fall 29 23 7 5 



Winter 18 24 14 8 



In average yearly milk production, fall ranked first in 

 29 associations and second in 23 associations. Winter rank- 

 ed first in 18 associations and second in 24. Summer ranked 

 first in 10 associations and spring ranked first in only 7. It 

 is also worthy of note than in milk production spring and 

 summer ranked third and fourth in most of the cases. 



Table 4 shows the number of times each season ranked 

 first, second, third and fourth in butterfat production: 



TABLE 4. — Seasons when cows freshened ranked according to average 

 production of butterfat. 



Number of times ranked 

 Season of freshening First Second Third Fourth 



Spring 7 8 27 22 



Summer 8 6 17 31 



Fall 38 16 7 3 



Winter 13 35 11 5 



Out of a possible 64, fall ranked first 38 times in aver- 

 age yearly production of butterfat per cow and second 16 

 times. Winter ranked first 13 times and second 35 times 

 out of a possible 64. Summer ranked first 8 times and 

 fourth 31 times out of a possible 62, there being two associ- 

 ations in which no cows freshened during the summer 

 months. Spring ranked first only 7 times in butterfat pro- 

 duction and second 8 times. In average pounds of butterfat 

 produced per cow for all associations combined (see Table 

 1) fall ranked first, winter second, and spring and summer 

 tied for third and fourth places. 



The cows that freshen in the fall not only rank first in 

 yearly butterfat production, but they produce most during 



