T6 MAINE STATE COLLEGE 



as unfit for food, unless Ave allow for the use that is sometimes made 

 of the heart, liver and. portions of the large stomach. 



If we include in the refuse (in the sense of use as food) the skin 

 and the ordinary kitchen waste, we find that very nearly half of the 

 dry matter in body of a fat steer is either wholly wasted or is 

 used for less important and valuable purposes than serving as food 

 for man. 



This is in strong contrast to milk as an animal food product, none 

 of which is necessarily rejected. 



It has been stated that two of the steers were slaughtered and 

 analyzed at the age of about twenty-two months, while the other 

 pair was fed for ten months longer. 



It appears from our analyses entirely probable that the four ani- 

 mals were practically alike in composition when of the same age. 

 This being assumed, we are in a position to learn the composition 

 of the growth during the last ten months of feeding of the older pair. 



JLVII. 



COMPOSITION OF INCREASED GROWTH OF OLDER STEERS. 





In Fresh 

 Material. 



I>" Water-free 

 Material. 





1 



w 



5 



— T. 



A 

 p 



43 



< 



Entire bodies, except skin. 



1,072.9 

 829.2 



924.6 



593.2 



329.3 

 248.0 



492.6 

 276.9 



102.6 

 6S.2 



Per cent composition increase for next 10 mos. 



243-7 



58-2 

 42.4 



331-4 



41. S 

 57.6 



•81.3 



41. S 

 24.5 



215.7 

 46.7 

 65.1 



34.4 



11.5 

 10.4 



These results accoid in a general way with those reached by 

 Lawes & Gilbert. Those investigators found that the increase in 

 fsttening an animal contained a much smaller proportion of water 

 and a greatly larger proportion of fat than the entire body. 



The increase in the later stages of growth is of very much the 

 same character, two-thirds of this consisting of fat, whereas the 

 bodies of the vounsrer steers were less than half fat. 



SOIMAEY. 



(1) Beginning at the age of four to six months two pairs of steers 

 were ftsd from seventeen to twenty-seven months on rations differing 

 widely in their nutritive ratio, one ration having a ratio of 1:5.2 



