92 A STUDY OF FARM ANIMALS 



milk from 18 to 20 per cent, for in his experiments he found 

 a need for this increased protein over that adopted by 

 Haecker. American standards, and especially those applied 

 to milk production, are a great step in advance over the 

 standards introduced from Germany. 



QUESTIONS ON KNOTTY THINGS 



1. How does a chemist analyze a feeding stuff? 



2. What is meant by digestible nutrients? 



3. How are feeding tables arranged? 



4. Trace the history of the feeding standards. 



5. Explain meaning of a maintenance ration. 



6. What standard of weight is used in feeding tables? Suppose 



an animal weighs more or less? 



7. Discuss the practical use of Wolff-Lehmann standards. 



8. What are the energy value feeding standards? 



9. How does the Haecker standard for dairy cows differ from the 



Wolff-Lehmann? 

 10. How did Savage try to improve the Haecker standard? 



