MANUAL 0]? OATTLE-FEEDIKa. 



453 



weight, wliile the quantity of non-nitrogenoiis nutrients 

 increases slightly, in Wolff's experiments, both the pro- 

 tein and the non-nitrogenous nutrients decreased in quan- 

 tity toward the end of the experiments. As aheady noted, 

 "Weiske's lambs grew faster than others of tlie same herd, 

 and it is not unlikely that slightly less food would have 

 given satisfactory results. 



The gain of live-weight diminished as the animals ap- 

 proached maturity, while the protein consumption, as well 

 as the gain of flesh, per head, was found to be nearly con- 

 stant throughout. If, however, the results are calculated 

 per 100 pounds live-weight, as in Soxhlet's experhnents on 

 calves, we have a somewhat different showing. In the 

 following table this has been done. 



Per 100 Pounbs Live-weight. 



Periocl. 



1 



2 

 3 

 4 



DlGESTFD PEE DAY. 



Protein. 

 Lbfa. 



G 

 7 

 8 

 9 

 10 



0.38 

 0.33 

 0.28 

 0.28 

 0.24 

 0.23 

 0.22 

 0.20 

 0.19 

 0,12 



Fat, 

 Lbs. 



0.07 

 0.07 

 0.06 

 0.06 

 0.05 

 06 

 0.05 

 0.05 

 0.06 

 0.05 



Carbhy- 



diates. 



Lb''. 



Gain of 



weighc 



per (lay. 



Lbs. 



Piotein 

 con sump 



Gain of 

 protem in 



Gain of 



tion per ^ , p rcr. of 



day. ^Ih^' t^moimt 



Lbs. ' digested. 



"We see that as the animals grew older the relative 

 amount of food consumed decreased, and that the gain of 



