New York Agricultural Experiment Station. 



91 



Table XVII.— The Amount op Nutrients Reduced and Also the 



Protein. 



Average of 100 rec- 

 ords fioni tows 

 averaginj; 4.8 

 yrs. uld and r>.d 

 mouths ill milk. 



to 



a 



o 



s> 

 t-l 

 o 



<D 



.a . 

 u 



^"3 





9^ 



Before 

 After 





Before 

 After 



Per lOOC Lbs. Live Weight. 



Total 

 digest- 

 ible or- 

 ganic 

 matter. 



Lbs. 



16.8 



Fat in 

 millc. 



Per ct. 



4.1 

 4.1 



Digest- 

 ible 

 pro- 

 tein. 



Lbs. 

 2.41 



14.7 2.03 



Fuel 

 value. 



Cal. 

 33,478 



29,519 



Nutri- 

 tive 

 ratio. 



1:6.6 

 1:7.2 



Average Per 

 Day Per Cow. 



Milk 

 yield. 



22.2 

 20.5 



Fat in 

 mill;. 



Lbs. 



.90 

 .85 



Approxi- 

 mate cost 

 of food 

 for one 

 lb. of 

 milk. 



Cts. 



.72 

 .73 



Dry 



matter 



In food 



for one 



lb. of 



milk. 



Dry 



niatter In 



food for 



one lb. 



of milk 



solids. 



Lbs. 



1.0 



1.0 



Lbs. 



8.1 

 7.5 



Digest- 

 ible dry 

 matter in 

 food for 

 each lb. 

 of milk 

 solids. 



Lbs. 



5.4 



5.0 



REDUCING THE AMOUNT OP NUTRIEINTS WHEN LESS THAN 15.5 LBS. 



The average data from 127 records, each of which covers a 

 period when the amount of total nutrients, in no case exceeding 

 15.5 lbs. per day per 1000 lbs. live weight, was reduced, are 

 found in Table XVIII. The average reduction was a moderate 

 one. The milk flow diminished somewhat more rapidly than is 

 usual under a continuouslv favorable ration. The rate of gain 

 in live weight was slow. 



With hut little change of protein. — The average of 67 records 

 when there was but little change of protein with the moderate 

 reduction of the total nutrients, shows a little less than the 

 normal shrinkage in milk flow. Little increase in live weight 

 occurred. (A, Table XVIII.) 



With an increase of protein. — There are 27 records in which 

 there was a decided increase of protein in the ration. The aver- 

 age shrinkage in milk was greater than normally occurs. There 

 was little change in live weight. (B, Table XVIII.) 



