154 



MAISrUAL OF CATTLE-FEEDING. 





Prottm 

 d^esttd 

 per day 

 Grins 



Nutntive 

 ratio 



Gam of 



prottm 



per day 



Grms 



Gam m 



pei cent 



of digested 



protein 



1 



111 6 

 125 

 132 2 

 150 9 

 170 5 

 193 8 

 221 4 

 257 2 



1:5 87 

 1 :5 42 

 1:5 08 

 1:4 78 

 1 .4 22 

 1 :3 27 

 1.2 84 

 1 :2 55 



1.9 

 9 

 11 1 

 23 4 

 18 3 

 27 4 

 80 6 

 27 4 



1 8 



2 



7 3 



8 



8 3 



4.. 



15 9 



5 



10 5 



G 



14 3 



7 



14 



8 



10 9 







The relatwe gain of protein increased up to a nutritive 

 ratio of 1 : 4.78, and then decreased. 



These and many other experiments which might be ad- 

 duced show that a larger proportion of the digestible pro- 

 tein of a ration is applied to productive purposes when 

 that ration also contains abundance of non-nitrogenous 

 nutrients. 



"We must beware, however, of hastily concluding that 

 a wide nutritive ratio is the most profitable for the pro- 

 duction of flesh. The amount of fodder which an animal 

 can consume is limited, and, if the nutritive ratio be made 

 very wide, the absolute amount of protein in the quantity 

 of food daily eaten will be insufficient to supply material 

 for production. 



Moreover, the actual number of pounds of flesh gained 

 per day is often greater on a ration pretty rich in albumi- 

 noids, as, for example, in the experiments on sheep and goats 

 just cited, though, of course, accompanied by a large protein 

 consumption in the body. The best pecuniary results may, 



