98 Bulletin 152. 



Table VI. — Individual Variation in Per Cent of Fat. 



cd 



11 



V 



70 

 14 



Age. 



Greatest 



atid leHSt 



variation 



in per cent 



of fat. 



Pound.s of milk and per cents of fat given 

 at the three niilkings on that day. 



Morning. 



3.60 3.40 

 .10 



,10 



.40 



Milk. 



14-625 

 13.000 

 17.625 

 16.000 



Fat. 



2.0 



2.4 



3-1 

 30 



Noon. 



Milk. Fat. 



Night. 



15-250 

 14.000 

 12.000 



12.375 



5-4 

 2-5 



2-9 



2.95 



Milk. 



12.000 

 16.625 

 13-250 

 12.125 



Total pounds of 

 fat. 



Fat. For the 

 day. 



3.6 

 2.4 

 2.8 

 2.9 



For the 

 week. 



9-695 

 8.289 



Largest weekly 3'ield of fat for two-year olds 12.675 



Smallest '" " " " 5.263 



Average " *' " " 8.697 



99 

 106 



2.0 18.500 



3.1 18.125 



2.9 14.250 



3-3 ' 14-125 



4.0 

 4.2 

 3.3 

 3-3 



15-500 

 15-375 



16.375 

 16.125 



5-2 



3-8 



3-1 

 3-2 



1.926 



1.986 



1.527 I 

 1.609 ' 10-824 



12.978 



Largest weekly yield of fat for three-year olds 17.472 



Smallest "" " " " 7.665 



Average " " " *' 11-555 



145 

 122 



4 



4 



13.069 



12.713 



Largest weekly yield of fat four-year olds 18.265 



Smallest " " " " 7.100 



Average " " " " 13091 



10.688 I 2.15 



16.125 ' 2.80 



24.875 3.10 



24.750 3.40 



14.188 

 14.063 



20.000 

 20.500 



5.10 



4-45 

 3-50 

 3-50 



8.761 

 15-459 



Largest weekly yield of fat for full aged cows 21.333 



Smallest " " " " 8.761 



Average " " " " 14.106 



Here it will be noticed that among the examples of largest 

 variation each animal, except the full aged cow, No. 155, gave 

 more fat than the average for her class. Those with the least 

 variation are only a little lower than the average in total fat 

 except the full aged cow, No. 192, which is quite above the 

 average. Thus it is evident that neither those animals which 

 vary much in per cent of fat nor those which vary little can be 

 ter ned abnormal animals, and that a cow can give a good yield 

 of fat if her per cent does 01 does not fluctuate widely. 



