282 ' FARM AND SCHOOL PROBLEMS. 



A comparison of the food to be fed and of the composition 

 of the egg and hen shows that the character of the food must be 

 determined by the composition of the product desired. 



The above figures indicate that the laying hen requires : 



(a) A good supply of fresh water at all times. 



(b) A large amount of water in succulent feed. 



(c) A high percentage of protein in the body, egg and feed. 



PROBLEMS. 



1. Find the nutritive ratio of corn if its composition (according to 

 Henry) is protein 7 per cent, carbohydrates 63.4, fat 3.9. 



2. The analysis of meat scraps shows that they consist of the fol- 

 lowing : protein 68.4 per cent, carbohydrates 0.3 per cent, fat 13.5 per cent ; 

 what is the nutritive ratio? 



3. In comparison of corn and meat scraps, which do you find to be 

 too wide as a ration, and which too narrow? 



4. How many pounds of meat scraps would be required in a mixture 

 with 100 pounds of corn to make a balanced ration at a nutritive ratio 

 of 1:4.3? 



Requirements of a Successful Ration. 



1. The ration must contain sufficient food nutrients. 



2. The food nutrients must be in the right proportion. 



3. The ration must be succulent and palatable. 



4. The ration must have sufficient bulk. 



5. The feeds must be economical but not necessarily cheap. 



6. The rations must be fed regularly and intelligently. 



7. There must be special feeds of grit, shells, charcoal and salt. 



The prejudice that exists against the use of salt for feeding 

 poultry is probably due to the fact that often times when poultry 

 has been fed on meat that was kept in brine it resulted in the 

 death of some of the members of the flock. 



In a comparison of feeds or balanced rations for farm an- 

 imals it is found that poultry requires a greater percentage of 

 mineral constituents than are needed by other farm animals. 



The rapid growth in comparison to the period from hatch- 

 ing to maturity is the real cause for the great demand of 

 feeds containing material for growing the frame work of the 

 body. 



