12 



There is no evidence here that ensilage waters the milk ; in fact, 

 the only thiug really proven is that the variation is very small ; but, 

 so far as there is any change, the tendency is for ensilage to make 

 more milk and better milk than dry fodder, thus corresponding with 

 pasture feed. In table 1, following, it will be seen that Lot G on 

 ensilage gave more milk, and milk that was richer in all solids, except 

 caseine. 



CHANGING THE NUTRITIVE RATIO. 



A change of tw nutritive ratio '" means feeding rations in which the 

 proportion of albuminoids to non-albuminoids is changed. For ex- 

 ample, two rations, made up as follows, have been fed ; 



ration, 7 a. 



44 lbs. 

 5i " 

 6" " 

 3 " 



1 :9 



This may be regarded as a wide variation ; the ration la is a little 

 richer in albuminoids than the German standard requires, but the 7a 

 combination is an excessive starchy ration. If the character of the 

 food exerts any marked effect on the quality of the milk it would 

 seem that these two rations ought to make themselves felt. 



At the same time that these two rations were being fed, other ra- 

 tions, intermediate between them, were also fed. Each lot of cows 

 consisted of two, and the lots were alternated, being fed two weeks 

 in each period. The following table shows the lesults in quantity: 



FIRST PART. SECOND PART. 



MILK MILK LOSS DUE TO 



NUTRITIVE PRODUCED IN NUTRITIVE PROD UCED IN WIDENING 



LOT - RATIO OF FOOD. I4))AVS . RATIO OF FOOD. I+ DAYS . THE RATIO. 



lli 



1:5.2 660 lbs. 1:9 598 lbs. 62 

 |B. 1:5.2 552 1:9 497 



1212 1095 117 



(C. 1:5.6 560 1:8 530 30 



2 j D. 1 :5.6 700 1 :8 635 65 



1260 1165 95 



/5 



3<| G. Ensilage, 587 Hay, 512 



The decrease in milk amounts to about 10 per cent, in the first 

 combination, 8 per cent, in the second, and 13 per cent, in the third. 

 Now, how much was the chemical composition varied? 



