PRODUCTION OF WORK, MILK AND WOOL 83 



QUESTIONS 



1. What is the source of muscular energy? 



2. Tell wliat is known about the way muscular energy is produced. 



3. How do animals compare with engines in the efficiency with which they 

 perform work ? 



4. Discuss the effects of speed, training, fatigue, and build of animal on the 

 economy with which work is produced. 



5. What is known about milk secretion? 



6. How has it been shown that milk fat may be formed from the carbohydrates 

 of the feed? 



7. Wliat are the food requirements of cows in milk? 



8. Of what is wool composed? 



9. Why should sheep be fed a larger proportion of protein than beef cattle or 

 pigs? 



10. In what manner does the feed influence the quantity and quality of wool? 



