New York Agricultural Experiment Station. 113 



Table XXXV. — A Reduction of Protein and of Total Nutrients. 



Average of 139 rec- 

 ords from cows 

 averaging 4.8 

 yra. old and 5.8 

 mouths in milk. 



4) 



,a 

 o 



«?. 



00 '^ 



T-t r^ 



- 3 



o 



c8 

 O 



Before 

 After 



Before 



After 



Per 1000 Lbs. Live Weight. 



Total 

 cliges^ 



ible or- 

 ganic 



matter. 



Lbs. 

 16.7 



14.8 



Digest- 

 ible 

 pro- 

 tein. 



Lbs. 



2.41 

 2.09 



Fuel 

 value. 



Cal. 

 33,328 



29,495 



Nutri- 

 tive 

 ratio. 



1:6.6 

 1:6.9 



AVERAGE Per 

 Day Per Covir. 



Milk 

 yield. 



Lbs 

 22.5 



21.0 



Fat in 

 niUk. 



IA)s. 



.92 

 .90 



Dlgestl- 

 Ible dry 

 matter in 

 food for 

 each lb. 

 of milk 

 solids. 



Lbs. 



5.4 

 4.9 



A REDUCTION OF THE PROTEIN WHEN MORE THAN 2.5 LBS. 



One hundrt^d twenty-three records when there was this reduc- 

 tion of protein give the average data found in Table XXXVI. 

 The average yield of milk diminished at about half the normal 

 rate. The rate of increase in live weight, at about one-half 

 pound per day, was not affected. 



With little change in amount of nutrients. — When there was 

 little change in the amount of nutrients in 31 instances the 

 average result shown in A of Table XXXVI was obtained — 

 which was practically the same as the total average above 



given. 



With an increase of total nutrients. — In 47 instances, when an 

 increase of total nutrients occurred, there followed no reduction 

 in the milk yield, but a slight average increase. The rate of gain 

 in weight from about one-half pound per day became about one 

 pound per day. (B, Table XXXVI.) 



With a reduction of total nutrients. — When there was a moder- 

 ate reduction in the amount of total nutrients there followed, 



8 



