190 



MAKUAL OF CATTLE-FEEBTFO. 



little importance, it will be sufficient to indicate in outline 

 tlie general results of experiments on caJ'nivoious animak. 

 It has already been bliown tliat fat is produced in llie 

 body in tlie deconipobition of albuminoids, and that with 

 a comparatively large amount of the latter the fat thus 

 formed may equal the amount oxidized in the body. 



If, now, to such a ration we add a certain quantity of 

 fat, say 100 gi^amxiies, we have just so much more fat 

 available for deposition in the body, smce the consumption 

 of fat does not increase with the supply as does that of the 

 albuminoids. 



Thus, in a series of experiments made by Pettenkofer 

 ife Yoit,* a dog was fed daily 1,500 grammes of meat, a 

 quantity which had been found sufficient to keep him in 

 equilibrium both as regards flesh and fat, and lecoived 

 also varying quantities of fat- 



Food. 





IjOTECi 



ON Body 





Meat 

 Grms 



Fat. 

 Grms. 



ConRumption 



of flCBh 



Grins 



Gam of flesh 

 Orma 



4-43 



- 1 



+98 

 + 49 

 +45 



ConBiimption 

 of fat t 

 Grms 



Gain of fat, 

 Gima 



1,500 

 1,500 

 1,500 

 1,500 

 1,500 



m 



60 

 100 

 100 

 150 



1,457 

 1,501 

 1,402 

 1,451 

 1,455 



158 

 186 

 103 

 151 



174 



32 



89 



91 



309 



186 



Tlie addition of fat caused a deposition of it in the body, 

 and the amount thus laid up w^as, in nearly every case, pro- 

 portionalto th at fed. 



* Zeitsohrift f Biologxe, IX , 30. 



f Including the fat pioduced from protein. 



