June, 1941] 



AXIMAL BrEEDIXG AND >. UTRITION 



FIGURE 4. MORE MII.K. IS A PRACTICAL OBJECTIVE 

 Both growth rate and milk yield are inherited traits but growth cannot materialize with- 

 out milk. Age of the lamb on the left is the same_ as that of the twins on the right. Weight 

 of twins is 91 pounds, weight of the single lamb is 26 pounds, 



eral. The initiation of a further long range study of this fundamen- 

 tal aspect of physiology based on modern scientific methods of pro- 

 cedure thus clearly seemed imperative for the sound progress of 

 knowledge regarding animal nutrition. 



In this modernization tVvO radically new procedures were applied. 

 One was the design and construction of new types of apparatus which 

 would allow a greater research output at less expense, and the other 

 was the study of the energy expended by the animal organism not 

 only when subsisting on different nutritive planes, but also during a 

 limited fast when its digestive apparatus was not filled with food. 



It was at this stage that the initiative, the vision, and the experi- 

 ence of a great scientist came in to give research in animal nurition 

 a rational scientific trend. With his usual prompt decision. Dr. Bene- 

 dict remarked : "As nobody else will do this we will have to tackle it." 



Thus was begun a cooperative research which stands today as a 

 record in originality and volume output. It represents a material 

 advance in the studv of metabolism of farm livestock. 



