LIMITS AND VARIATIONS 



43 



Table XVII 

 AVERAGE PERCENTAGE OF FAT BY FOUR-WEEK PERIODS 



Jeisey. 



Shorthorn. 



Ayrshire. 



Holstein. 



First period. 

 Second 

 Third 

 Fourth 

 Fifth 

 ■ Sixth 

 Seventh 

 Eighth 

 Ninth 

 Tenth 



Eleventh . 

 Twelfth 

 Thirteenth . 

 Fourteenth . 



5.20 

 4.91 

 5.02 

 4.79 

 4.88 

 4.98 

 4.93 

 4.83 

 4.84 

 4.88 

 5.23 

 5.68 

 5.48 

 6.47 



4.08 

 3.88 

 3.71 

 3.54 

 3.56 

 3.58 

 3.69 

 3.73 

 4.19 

 4.19 

 4.11 



.3.94 

 3.68 

 3.60 

 3.59 

 3.70 

 3.52 

 3.63 

 3.74 

 3.71 

 4.05 

 4.92 

 3.96 

 4.18 



3.14 

 2.87 

 2.78 

 3.11 

 3.11 

 2.98 

 3.03 

 3.09 

 3.05 

 3.31 

 3.39 

 3.70 

 4.48 

 3.68 



Table XVIII 



RELATION OF LACTATION PERIOD TO CHEMICAL AND 



PHYSICAL CONSTANTS OF FAT 



AVEEAGB DeTBBMINATIOWS BY FoUB-WEPX PbEIODS 



