MANUAL OF CATTLE-FEEDIKG. 



J.<«y£> 



§ 2. ObGAHIZED and CiRCTrLATORY PbOI!E1?T. 



Protein Consumption during* Hunger.— Tlie follow- 

 iBg table * gives, in graimiies, the quantities of urea daily 

 excreted by a fasting dog weighing about 35 kilogrammes 

 (77 lbs.), the excretion of urea being, as we have seen, an 

 exact measure of the protein consumption in the body. 



No. of Expenment. 



11. 



5. 



14. 



15. 



16. 



Previous food 

 per day. 



2,500 gniis 

 meat. 



1,800 grms 



meat and 250 



grms. fat. 



1,500 grms. 

 lilt at. 



1,500 grms. 

 meat. 



^ 





Grms. 



Grms. 



Grma. 



Grms. 



GrmR. 



Last day of feeding 



180 8 



130 



110.8 



110.8 



24 7 



1st day of fastiii^ 



60.1 



37*5 



29.7 



2$.5 



19. () 



2d ** " 



24.9 



23.3 



18.2 



18.6 



15 6 



8d " '* 



1^.1 



10.7 



17.5 



15.7 



14 9 



4t^ " " 



17.3 



14.8 



14.9 



14 9 



13 2 



Sth " " 



12 3 



12.6 



14.2 



14 8 



12.7 



Oth " " 



13 3 



12 8 



13.0 



12.8 



13.0 



7fcli " " 



12 5 



12.0 



12.1 



12 9 



. . • . 



8th *' '* 



10.1 



* • • * 



12 9 



12 1 



« * ■ « 



Oth ** 



* a • « 



• « • • 



« * • « 



11.9 



» • ■ * 



10th *' " 



« « • * 



« • « * 



* * *. * 



11.4 



.... 



It will be observai that in these experiments the protein 

 consumption (as measured by the excretion of urea) was 

 very unequal on the last day of the feeding and the first 

 days of himger ; furthermore, that when food was with- 

 held the protein consumption at once sank, rapidly at first 

 but at last very slowly, till at about the sixth day it became 



Voit : Zeitschritfc fur Biologie, II , pp. 307-3( 



