300 



APPENDIX 



tenance requirement is first calculated, taking into account 

 the size of the animal. To this is added the amount neces- 

 sary to produce the milk, taking into account the amount and 

 richness. For example, let it be assumed the problem is to 

 calculate the ration for a 1150-pound cow producing 30 

 pounds of 4.5 per cent milk daily. According to the pre- 

 ceding statements the requirements would be as follows : 



The ration to be fed will then be selected and calculated 

 using the average composition of feeds as given in Table 51, 

 making such changes and modifications as are seen to be 

 necessary in order to bring the composition of the ration 

 reasonably close to the standard. 



TABLE 51. DRY MATTER, DIGESTIBLE PROTEIN AND TOTAL 

 NUTRIMENT PER 100 POUNDS l 



1 This table is adapted from Henry's " Feeds and Feeding," 10th edition, 

 p. 582, 



