173 



MANUAL OF OATTLE-FEEDIKG, 



No. of BxpenmcntB. 



7 

 13 

 20, 

 19 



Digested pbk Day ANn 



Hkad. AVKKAOJas 



Nutiitive 

 ratio. 



1 :7 49 

 1 :5 81 

 1 :4.70 

 1 ;4.01 



Albnmi- 



noidfa 



Lbs. 



Non nitro- 



gcmms 



nutrients. 



LbB 



0.220 

 0,208 

 0.329 

 384 



1 648 

 1.557 

 1.588 

 1,538 



IiicrcaRo of 



hvc vtiight 

 per d ly and 



head 



Lbs. 



0.111 

 0.158 

 0.189 

 0.206 



These numbers speak yeiy decidedly for tlie favorable 

 action of the albuminoids on the fat production ; a greater 

 increase of weight of the animal accompanies a greater 

 supply of albuminoids, wliile the quantity of the non-nitro- 

 genous nutrients is nearly the same in all the groups, and 

 therefore can have exerted no essential influence on the 

 increase of weight. 



If we take into account, however, the fact that, in all 

 probability, some of the so-called protein in these experi- 

 ments was really not protein, but amides or similar bodies, 

 which, though they may aid the flesh production, can 

 hardly serve as a source of fat, the number of cases 

 which indicate a formation of fat from carbhydrates will 

 probably be considerably increased. 



Still more decided results pointing toward a direct par- 

 ticipation of the carbhydrates in the production of fat 

 were obtained in the experiments of Ilenneberg, Kern, and 

 "Wattenberg,* already referred to for another purpose in 

 Chapter I. 



In this investigation two sheep were killed at the begin- 



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