ILLINOIS STATE DAIRYMEN'S ASSOCIATION 



195 



to reduce the production. Later in the absence of proper food 

 and protection from the cold, "J^^k Frost" effectually closes the 

 lactation period. In the meantime the cow has perhaps been in 

 milk 250 days and yielded 130 lbs. of butterfat, in which case 

 she is already unable to square the account and has three months^ 

 board still to pay. 



The following table presents figures obtained from testing 

 some thirty herds supplying milk for various purposes. The 

 fact should be borne in mind that they were being kept for 

 their profit as dairy animals. The figures given show the av- 

 erage milk and butterfat yield per cow in the different herds 

 and are grouped under the different headings according to the 

 interest taken by their owners in their improvement and manage- 

 ment. The average production in the farmer's herds is 177.6 

 lbs. butterfat per year, while in the dairy herds, the average 

 yield is 264.1 lbs., giving a difference of 86.5 lbs. in favor of the 

 latter. This at 25 cents per pound amounts to $21.62 per cow, 

 which in a herd of twenty cows means a difference of $432.40 

 in favor of the dairyman. 



TABLE I. 

 Average Yearly Production Per Cow. 



Farmer's Herds. 

 Herd. 



No. Milk. 



7 4524.7 



8 4485.7 



12 4503.6 



15 5127.8 



16 4607.5 



17 4354.6 



23 3314.1 



Average 4416.8 



264.1—177.6=86.5. 

 86.5(§)25c=$21.62. 



B. fat. 

 170.5 

 192.5 

 175.5 

 206.8 

 182.5 

 172.6 

 142.0 



177.6 



Dairy Herds. 

 Herd. 



No. Milk. B. fat. 



1 5753.0 261.6 



2 7376.4 267.7 



3 8056.7 275.7 



4 6219.7 242.3 



6 7873.1 285.2 



10 5430.8 227.3 



11 5969.4 205.0 



19 5409.6 242.9 



20 6106.3 235.0 



21 5970.9 242.8 



24 5921.4 350.1 



27 6111.7 232.9 



28 8468.6 274.6 



Average 6512.8 264.1 



