MA-NJIAh OF CATTLE-FEEDIIfG. 143 



In the fodder of the herbivora the action of fat in de- 

 creasing the protein conbinuption does not show it&elf so 

 plainly, itb action being masked bj tlie presence of large 

 quantities of carblij drates, wliieli, as we sball see, liave an 

 effect similar to tbat of fat. 



Moreover, the amount of fat in the fodder of the rmni- 

 nants cannot safelj exceed a certain easily-reached lindt- 

 Small quantities of fat exert in general a favorable influ- 

 ence ; larger quantities, however, are often very injmious, 

 causing disturbance of the digestion and an iacreasing lack 

 of appetite* The different modifications of fat, however, 

 behave very differently in this respect, and the fat of the 

 food certainly deserves attention, especiallj in the feeding 

 of young animals and in fattening, and likewise in case of 

 hoiraes, and in general whenever the fodder is rich in al- 

 buminoids. 



§6. FEEDma with Pbotbui JlStd Cabbhydkates, 



The Caxbliydrates act analogously to Fat on the 



consumption of protein and its deposition in the body. 

 Like it, they do not suspend the protein consumption, 

 wdiich increases or decreases with the amount of protein 

 in the food; like it, they decrease the protein con- 

 sumption somewhat, but not greatly; like it, too, they 

 enable an animal to subsist or even gain flesh on a. much 

 smaller quantity of albuminoids in its food than would 

 suffice were the ration composed of pure protein. 



The action of the carbhydrates t«i the formation of flesh 

 lias been investigated both in carnivorous and herbivorous 

 animais. 



In the previous sections we have been occupied exclu- 

 sively with experiments on carnivora, for the reason that 



