110 



DAIRY LABORATORY GUIDE 



Fig. 16. A milk 

 scale s used in 

 keeping milk 

 records. 



Data: 



EXERCISE 1 



VARIATION OF BUTTER-FAT IN MARKET MILK 



Object: To determine the value of market 

 milk containing varying percentages of but- 

 ter-fat. 



Apparatus: Samples of milk, scales, and 

 testing outfit. 



Steps: 1. Determine the percentage of 

 butter-fat in the milk from different patrons. 



2. Determine the average weight of a 

 quart of milk by weighing several samples on 

 the scales. 



3. Determine the number of quarts in a 

 hundred pounds of milk testing as above, and 

 the market value when retailed at local prices. 



Application: 1. What will be the cash value of the 

 milk from a cow giving 5000 pounds of 4% milk in one year 

 when retailed at local prices? 



2. What is the weight of a quart of milk testing 4%? A 

 gallon? 



3. How does the percentage of butter-fat influence the 

 weight? The price? 



