CHAPTER XIX 



WATER AND SALT REQUIREMENTS 



Water for Cows. Cows that are producing milk require 

 a much larger quantity of water than is necessary for grow- 

 ing animals or maintenance animals. This is caused by the 

 necessity of providing water to be used in the milk itself and 

 for the digestion and assimilation of a larger quantity of feed, 

 much of which is roughness. The following table shows the 

 average amount of water consumed per day for ten days by 

 two Jersey cows three months in milk, and by the same ani- 

 mals when dry and on maintenance. 



WATER CONSUMED BY Cows IN MILK AND ON MAINTENANCE 



The first half of the table gives the production of milk and 

 fat per day, the pounds of water consumed, and the amount 

 of dry matter in the feed. The second part gives the data 

 regarding feed and water when the two cows were dry and 

 farrow. The cow producing 26.8 pounds of milk per day used 

 R 241 



