118 Rkpurt of Departmknt of Ammal Husbandry of thk 



With hut little change in tuial nutrients. — The amount of total 

 nutrients was but little changed in 43 instances. The milk flow 

 diminished at a little more than the usual rate. The average 

 increase in live weight was considerably greater after the 

 change. 



With some reduction of nutrients. — The average for 22 instances, 

 when considerable reduction in amount of nutrients occurred, 

 shows a falling off in milk twice as great as is usual. The gain 

 in live weight was much less after the change of ration. 



A REDUOTION OF THE PROTEIN WHEN LESS THAN 2 LBS., MORE THAN 



1.6 LBS. 



The average data from '55 records when such a reduction 

 occurred are found in Table XXXIX. The average shrinkage 

 in milk was at about twice the normal rate. There was but 

 little change in live weight. 



With hut little change in amount of nutrients. — After this change 

 in the ration, when the amount of nutrients was but little 

 affected, there was, on the average in 26 instances, a reduction 

 of milk yield considerably greater than should normally occur. 

 The data are in A of Table XXXIX. 



With some increase in amount of nutrients. — Only 11 records 

 cover periods when with such a reduction of protein the nutri- 

 ents were increased. In these cases the amount of total nutri- 

 ents was small, and there was a continual loss of live weight. 

 The milk flow diminished but little faster than usual. There 

 was some increase in the cost of production. 



With same reduction in amount of nutriaits. — There are only 

 IS of the^'ecords which show this change of ration. In these 

 the shrinkage in milk flow was at about three times the normal 

 rate. 



KEMAEKS. 



In general changes in the amount of protein within the ordin- 

 ary limits i)roduced less effect than changes in the amount of 

 total nutrients. The average results which followed the differ- 



