80 Report of Department of Animal Husbandry of the 



Table VIII.— The Ajiount op Nutrients Below 15.5 Lbs. but Little 



Changed. 



Average of 84 rec- 

 firds fiom cows 

 aveia<iiii<i 4.2 yrs. 

 old and 6.1 luontbs 

 in milk. 



Before 



C 



«* . .. 



.= After 

 u 



o 

 1) 



t- >. 



■—1 cS 



cS T3 



C 



a 



Before 



After 



Per 1000 Lbs. Livk Weight. 



Total 

 digest- 

 ible or- 

 ganic 

 matter. 



Lbs. 

 14.6 



14.7 



Fat !n 

 milk. 



Per ct. 

 4.3 



4.2 



Digest- 

 ible 

 pro- 

 tein. 



Lbs. 

 2.05 



2.04 



Fuel 

 value. 



Cat 

 29,072 



29,209 



Nutri- 

 tive 

 ratio. 



1:7.0 

 1:7.0 



Average Per 

 Dav Per Cow. 



Milk 

 yield. 



Lbs. 

 20.2 



19.9 



Fat In 

 milk. 



Lbs. 



.87 

 .83 



Approxi- 

 mate cost 

 of food 

 for one 

 lb. or 

 milk. 



Cts. 

 .75 



.75 



Dry 



matter 



In food 



for one 



lb. of 



milk. 



Lbs. 

 1.0 



1.0 



Dry 



matter in 



food for 



one lb. 



of milk 



solids. 



Lbs. 

 7.5 



7.7 



Digest- 

 ible dry 

 matter In 

 food for 

 each lb. 

 of milk 



solids. 



Lbs. 



4.9 

 5.1 



AN INCREASE IN THE AMOU'NT OF NUTRIENTS WITH BUT LITTLE 



CHANGE IN PROTEIN. 



The average of 73 records which cover periods when this 

 change in the ration was made is shown in the following table. 

 No shrinkage in milk flow followed, on the average, but instead 

 a very slight increase. There was a little loss in live weight 

 before the change and a good average rate of gain afterward. 



