124 



MANUAL OF CATTLE-FKEDIKO. 



practically tlie same in all cases and so continued during 

 the remaining days, its amonnt being represented by tlie 

 excretion of about 12 grammes of urea. A large number 

 of other experiments gave the saixie result. 



The Two Factors determining Protein Consump- 

 tion. — It is plain from the above figures that there are 

 two factors which determine the amount of protein de- 

 stroyed in the body ; a constant one, which caused in 

 these experiments an excretion of about 12 grammes of urea 

 per day, and a variable one, which caused the excretion of 

 very different quantities of urea at first, and which gradu- 

 ally disappeared as the experiments progressed. 



No. of Expenment. 



11. 



5. 



u. 



15. 



16. 



Previous food 

 per day. 



2,500 grms. 

 meat. 



1,800 grma. 



meat and 250 



gnns. fat. 



1,500 grms. 

 meat. 



1,500 grms. 

 meat. 







Grms. 



G-rms 



Grms. 



Grms. 



Grms. 



Last day of feeding 



168.8 



118 



98.8 



98.8 



12.7 



1st day of fasting. 



48.1 



25.d 



17.7 



14.5 



7.6 



2d *' " 



12.9 



11.3 



6.3 



6.6 



3.6 



3d " " 



7 1 



4.7 



5.5 



3.7 



2.9 



4tli " ** 



5.3 



2.8 



2.9 



2.9 



1 2 



5th *' " 



0.3 



0.6 



2 2 



2.8 



0.7 



6tli *' *' 



1 3 



0.8 



1.0 



0.8 



1.0 



7fcli *' '' 



0.5 



0.0 



0.1 



0.9 



« • • • 



Sth *' *' 



-1.9 



# • ■ • 



0.9 



0.1 



• • ■ • 



9fch ** " 



« « « « 



* * « « 



* • « * 



-0.1 



• • • > 



10th " " 



II * * • 



244.3 



• ♦ • * 



• * * • 



-0.6 







Total* 



163.7 



135.3 



131.1 



29.7 



* Omitting the negative quantities. 



