DAIRYING DAIRY FARMING. 



381 



The aiuitomicul ;ind phy.siolo^icul fetitiircs of the dairy cow tire 

 discussed at some length. 



A comparative study was made of individual cows as regards type 

 and economy of production. In most cases 'I cows of the same breed 

 representing" diti'erent types were compared. Illustrated descriptions 

 are given of 12 of the cows of the herd, with deductions from their 

 records. The whole herd was divided into three groups correspond- 

 ing to the following types: (1) Dairy type, cows spare in form with 

 deep bodies; (2) beef type, cows with large frames and having a 

 tendenc}^ to lay on flesh easily; and (3) cows lacking in depth and 

 width of bod}'. The following table summarizes the record of the 

 college herd grouped according to types and breeds: 



Average record of coirx of different 1iipe>> and breeds. 



"The record shows that in our herd the dairy type i.s nearly equal to the Jersey 

 and excels the other breeds in production of butter. The dairy type i.s equal to the 

 Ayrshires and excels the other breeds in the production of milk. On the whole 

 the comparison seems to show that, under the present conditions, the type of the 

 cow is more essential than the breed as indicating the ability to produce milk and 

 butter economically. ' ' 



Exercise for covrs, B. Torssell {Ifeddel. K. Landtbr. Stijr. 1900^ 

 No. 63, pp. 170-T7'2). — Ten cows were separated into two even lots, 

 one of which (lot A) was kept in the stable, while the other (lot B) 

 was driven aliout 8.5 kilometers back and forth daily for 10 days. 

 After 10 days the second lot was kept in, while the other one was exer- 

 cised in the same way as lot B in the tirst period. The average yield 

 and fat content of milk during a preliminary period of 3 da3^s and 

 during the experiment proper are shown in the following table: 



Milk production vdth and without exercise. 



