90 Report or DEpaRrrTMENT OF ANIMAL HUSBANDRY OF THE 
TABLE XVI.—TuE AMOUNT OF NUTRIENTS REDUCED WITH AN INCREASE OF 
PROTEIN. 


Average of 72 rec- 
ovds from cows 
averaging 5.2 
yrs. old and 5.3 
mouths in milk. 

AVERAGE PERK 
Per 1000 Las. LivE WEIGHT. Day PER Cow. 


Total 




Digest- s 
digest: | “bie | Fuer | Nv’ | mune | Fat in 
ganic aie value. ratio. yield. milk. 
matter. ov 
2 Lbs. Lbs. Cal. Lbs Lbs. 
=~ Before.| 1.16} 2.10.\82,494) 1:7.5 |°22:6 90 
as} 
ao € i 
cS) After 14.6 | 2.54 |29,023| 1:5.2 | 21.6 . -88 
ro) 
i= 
3 | 
lip Approxt- Dry Dry sree 
nm mate eost | natter | matter in rhatsneste 
ayes Fat in of food in food food for food tor 
ae milk. for one for one one lb. each 16 
se) lb of a of milk of nila 
mn milk. milk. solids. 
ts solids. 
cs 
qo 
=| 
ie @) 
ve Per ct. Cts. Lbs. Lbs. Lbs. 
os Before 4.0 -70 1.0 7.8 Pay. 
Ae 
° 
es lAtters ) del | T81” AO ers 4.9 
A REDUCTION IN AMOUNT OF TOTAL NUTRIENTS AND OF PROTEIN. 
In Table XVII are the average data from 109 records, each of 
which covered periods when this reduction was made. 
The 
diminution in milk yield was about twice as much as would nor- 
mally occur under ample unchanged rations. 
The rate of gain 
in live weight, which was over one-half pound per day, became 
very slow after the change of ration. 
