THE DAIRY COW 57 



comparison with the description and pictures in this 

 book and by use of the score card and the comparison 

 card above. 



LABORATORY PROBLEMS 



VII. To Determine the Variation in the Fat Content from 



the Same Cow During the Process of Milking 



a. Obtain samples of milk at the beginning of the 

 milking. 



b. Obtain sample of milk at about the middle of the 

 milking. 



c. Obtain sample of milk at the end of milking. 

 Samples a, b and c can best be obtained by milking 

 directly into small bottles. 



d. Pour all the milk obtained (except samples a, 

 b and c) back and forth several times. Sample. 



Test all four samples and compare results. Why 

 does the milk increase in richness during the milking 

 process 1 



VIII. To Determine the Variation of the Fat Content of 



Milk from One Milking to Another 



Sample and weigh each milking from an individual 

 cow for a period of four days. 



Tabulate the data and if possible plot a curve show- 

 ing: 



a. Variation in the test of the milk. 



b. Variation in the quantity of the milk produced. 



c. Variation in the amount of fat obtained at each 

 milking. 



