Kkw York Acjiiicultuual Exfehumbnt Station. 85 



erate increase of the total uutrients and more pronounced in- 

 crease of protein. There was practically no change in live 

 weight on the average. See B. Table XII. 



With reduction of the proteim,. — In C, Table XII, are the data 

 from the 24 records when with a little increase of the total 

 nutrients there was considerable reduction of the protein. But 

 very slight shrinkage in the milk flow occurred. There was a 

 moderate rate of gain in weight before the change and a more 

 rapid one afterward. 



AN INCREASE OP TOTAL NUTRIENTS FROM LESS THAN 15.5 LBS. TO 



MORE THAN 15.5 LBS. 



In the following table are the average data from IIG records 

 when this increase in the ration was made. The average milk 

 3'ield suffered none of the usual diminution. There was a slight 

 average loss in live weight before the change of ration and a 

 gain of over one pound per day per cow afterward. 



With hut little change in amount of protein. — The average of 47 

 records when with the above increase of nutrients there was 

 but little change in protein is shown in A of Table XIII. Con- 

 siderable increase in milk yield followed. There was consider- 

 able loss in live weight before the change and an average gain 

 of about two pounds per day afterward. 



With an increase of the protein. — The average data from 43 

 records ai'e given in B of the same table. In each of these there 

 was an increase in the amount of protein averaging about 20 

 per ct. The shrinkage in milk flow slightly exceeded the normal 

 rate. There was a loss in live weight before the change of 

 ration and a good rate of grain afterward. 



With a reduction of the protein. — The average of 26 records in 

 each of which the amount of protein was reduced is given in C 

 of the table. While the amount of digestible protein p«M- day 

 was redu(;ed about one-half pound, the average amount did not 

 fall below 21 lbs. An increase in milk flow followed the change 

 and but slight increase in the cost of production. There was a 

 good rate of gain in live weight. 



