when once the necessary minimum of nitrogenous matter in the 

 ration had been passed. The rations fed to the various lots of 

 pigs were so arranged as to supply very different proportions 

 of nitrogenous and starchy food. In some cases the food was 

 mainly highly nitrogenous bean or lentil meal, in others very 

 starchy barley meal or maize was employed ; in another set 



Ib 



25 



15 



10 



2. 3. 



Nitrogenous Substance. 



4. 5. 6. 



I I Non-nitrogenous Substance. 



FIG. 46. Dry Matter and Nitrogenous Substance consumed per 100 Ib. Live Weight 



per week. Pigs. 



1. Bean and Lentil Meal, ad lib. 



2. Maize Meal, limited. Bean and Lentil Meal, ad lib. 



3. Beau and Lentil Meal, limited. Maize Meal, ad lib. 



4. Bran, limited. Maize Meal, ad lib. 



5. Barley Meal, ad lib. 



6. Maize Meal, ad lib. 



of experiments, actual starch or sugar was added to the 

 rations. In all cases the pigs had an ad libitum supply of one 

 food or other, so that they could regulate the amount and to 

 some extent the composition of their diet. 



