192 



MANUAL OF CATTLE- FEEOING. 



Carblxydrates may "be Oxidized instead of Fat.— 



By the addition of carbliydrates to albuminoid food the 

 protein conbumption i&, indeed, bomewhat deci eased, l)nt 

 never btopped; hut the caibhydrates, when present in feuf- 

 ficient quantity, may protect entiiely from oxidation the fat 

 of the body, and also the fat of the food and that formed 

 from protein. This efteet of the carbliydrates becomes 

 evident when we compare some of the experimentb in 

 w^hieh the animal was fed on meat alone with those in 

 which the same quantity of meat was fed with the addition 

 of starch or sugar. 



rooD 



NUTKITIV 



I EFrBor 





M<at 

 Grms 



^t in b or 

 wigai. 

 Grms 



167 



182 



I -it 

 Gims 



Conhumption 



ot tk Hh 



Grms 



599 

 530 

 637 



LOKR of 



flesh 

 Gims 



CoBBHinption 



ol Uit * 

 QrniB 



Gam of 



fttt 

 Grms 



500 

 500 

 500 



6 



• • 



99 

 30 

 37 



108 

 50 

 48 



^47 

 + 14 

 + 16 



The carbliydrates of the food in the second and third 

 experiments caused the fat consumption to decrease to less 

 than half its former amount and made a corresponding 

 ^ain of fat possible. This they apparently accomplished 

 by possessing themselves of the oxygen which otherwise 

 would have combined with the fat ; in other words, they 

 were oxidized in place of the latter. 



Difference in the Action of Oarbhydrates and Fat* 

 — Pottenkofcr & Yoit have found that while an increase 



* Including iiiat formed from protein. 



