PHYSICAL PROPERTIES OF MILK 71 



Relative Size of Fat Globules in Milk of Different Breeds 





Jerseys 



No. 4 



No. 99 



No. 118 



Average 



for 

 Jerseys 





309 



OOO 



338 



328 



Ayrshires 





No. 300 



No. 301 



Average 



for 

 Ayrshires 







141 



160 



150 



HOLSTEINS 



No. 205 



No. 206 



No. 209 



Average 



for 

 holsteins 





127 



164 



134 



142 



Shorthorns 



No. 400 



No. 402 



No. 403 



Average 



for 



Shorthorns 





311 



353 



211 



282 





This table shows the same results as noted by others, the 

 Jersey having by far the largest fat globules, while the 

 Holstein has the smallest, the Shorthorn standing between 

 the Holstein and the Jersey. The chief difference between the 

 size of the fat globules with the different breeds is that 

 with the Jersey there is a greater proportion of the larger 

 globules and that the milk of the other breeds contains a 

 limited number as large as the largest in the Jersey milk. 

 The milk of the Holstein breed is especially noticeable in con- 

 taining a large number of small fat globules, together with a 

 wide variation in size. 



The comparative size of the fat globules in the milk of these 

 four breeds is illustrated graphically in Fig. 3, where the 

 average size of the fat globules is represented by the size of 

 the circles in the upper group. 



