igii] Carl L. Alsherg iii 



If the weights of these organs be calcnlated on the basis of one 

 hundred pounds live weight, the averages for the three diets show 

 that the brains and heart vary inversely as the protein fed, and that 

 the kidneys vary directly. The data for the liver tend to show 

 that Lot I is lower than either of Lots II or III, there being prac- 

 tically no difference between the weights for Lots II and III. 



Further study is being made along this line to ascertain if 

 possible the relative influence of feed and individuality. 



Effect of the Quantity of Protein Ingested on the Nutrition 



of Animals 



III. ON THE ASH AND TOTAL PHOSPHORUS FROM LAMBS 



R. H. WILLIAMS AND A. D. EMMETT 



{Laboratory of Physiological Chemistry, Department of Animal 

 Husbandry, University of Illinois, Urhana, III.) 



The special object was to study the influence of dififerent 

 amounts of protein in the feed upon the ash and phosphorus con- 

 tent of muscular tissues of lambs, fed under known conditions. In 

 this particular case the leg of mutton cut was selected from twelve 

 of the twenty-one animals referred to above by Carroll and 

 Emmett. 



The data show that (a) upon the fresh basis, the average per- 

 centage of ash tends to vary inversely as the amount of protein fed, 

 and that the per cent. of total phosphorus is practically the same 

 for the medium and low protein lots but that the value for the high 

 protein lot is greater. (&) On the water- and fat-free basis, the per- 

 centage of total ash in the muscular tissue is almost the same for the 

 high and medium protein-fed animals but higher for those fed on 

 the low protein plane. The total phosphorus seems to vary directly 

 with the amount of protein fed, the difference between the low and 

 high lots being much smaller than that between the medium and 

 high ones. (c) The per cent. of phosphorus in the ash shows that 

 the ash contained more phosphorus as the amount of protein feed 

 increased. This study is being continued with other muscular 

 tissues from lambs, and with pigs. 



