viii INTRODUCTION 



know much more about feeding and we can control nutrition to a 

 large extent. But we cannot control inheritance as measurably as 

 we would like. In Part III the question of better bulls and how to 

 get them and how to feed and handle them is given careful con- 

 sideration. 



5. Dairy farm practice. — We have brought together in Part 

 IV under this head the best material we can find on the control of 

 tuberculosis and abortion, the greatest disease problems there are 

 in Animal Husbandry. Some suggestions are given in the produc- 

 tion of clean milk, buying and selling dairy cattle, and herd 

 improvement. Good practices are important. The more we can 

 learn about them the better. 



6. The feeds. — Good roughage is the foundation of feeding. 

 The man who can get and maintain good stands of alfalfa, clover or 

 soybeans for hay and then couples up with these legumes, good 

 silage, has his feeding problems three-fourths solved. A thorough 

 knowledge of the source, composition and feeding value of the 

 various concentrates is necessary to know how effectively to 

 supplement this roughage. Part V gives methods of getting good 

 roughage on our farms as well as the composition of the different 

 kinds. Also the concentrates are fully described. 



7. Dairy husbandry the foundation of permanent agri- 

 culture.— L. H. Bailey in his book "The Holy Earth" says, "The 

 surface of the earth is particularly within the care of the farmer. 

 He keeps it for his own sustenance and gain, but his gain is also the 

 gain of all the rest of us. 



"He is the agent or the representative of society to guard and 

 subdue the surface of the earth and he is the agent of the divinity 

 that made it. He must exercise his dominion with due regard to 

 all these obligations. He is trustee. The productiveness of the 

 earth must increase from generation to generation; this also is his 

 obligation." 



This obligation is not a heavy one to the dairyman. The dairy 

 farmer is the permanent farmer and the satisfied farmer. May he 

 find something in this book to interest him and encourage him. 



