New York Agricultural Experiment Station. 105 



Table XXVIII.— An Increase of Protein with a Reduction op Total 



Nutrients. 



Average of 74 rec- 

 ords from cows 

 averaging 5.1 

 yrs. old and 5.3 

 months in milk. 



a 



M 



CI eS 



a 



Before 

 After 



S-i 



o 



Em 



Before 



After 



Per 1000 Lbs. Live Weight. 



Total 



digest- 

 ible or- 

 ganic 

 matter. 



Lbs. 



16.0 

 14.4 



Digest- 

 ible 

 pro- 

 tein. 



Lbs. 

 2.17 



2.55 



Fuel 

 value. 



Cal. 

 32,308 



28,751 



Nutri- 

 tive 

 ratio. 



1:7.1 

 1:5.2 



Averaoe Per 

 Day Per Cow. 



Milk 

 yield. 



Lbs. 

 22.6 



21.7 



Fat In 

 milk. 



Lbs. 



.90 

 .89 



Digest- 

 ible dry 

 matter In 

 food for 

 each lb. 

 of milk 



solids. 



Lbs. 



5.1 

 4.9 



AN INCREASE OP PROTEIN WHEN LESS THAN 2 LBS. AND MOREi THAN 



1.6 LBS. 



One hnndred and twenty-seven records cover periods when such a 

 change was made. There was also on the average a slight in- 

 crease in the total nutrients. The average data are given in 

 Table XXIX, The milk flow diminished scarcely any. There 

 was a moderate loss in live weight before and a slow gain after 

 the change of ration. 



With little change in amomit of nutrients. — When the amount of 

 nutrients was but little changed in 53 instances there followed 

 about the normal falling off in milk production (A, Table XXIX). 

 Under the rations fed there was a moderate loss in live weight. 



With an increase of total nutrients. — When there was an in- 

 crease of the total nutrients in 65 instances there followed an 

 appreciable increase in the milk production, and the cost of pro- 

 duction was somewhat higher. There was some loss in live 



