60 



DAIRYING. 



13. A cow giving 8,500 pounds of milk in a year consumed the fol- 

 lowing amount of feed : 



<Hay 1.237 Ibs. 



Silage 7,735 Ibs. 



Pasture grass 301 Ibs. 



Sugar beets 502 Ibs. 



Wheat bran 570 Ibs. 



Oats 138 Ibs. 



Corn meal 650 Ibs. 



Oil meal 70 Ibs. . 



Distiller's Grain '. 546 Ibs, 



These feeds and the milk contained the following percentages 

 of fertilizing elements : 



The fertilizing value of these materials is: 



Nitrogen, 20 cents per pound. 



Phosphoric acid, 4 cents per pound. 



Potash, 4 1 / t cents per pound. 



What is the value of the excess of fertilizing constituents in 

 the feed over these in the milk of this cow? 



14. Give a rule for estimating the money value of skim milk per 

 100 pounds. 



15. Explain at least five advantages which dairying has over other 

 lines of farming. 



16. Mention some of the traits of character which a successful 

 dairyman should possess and why are these advantageous? 



