New YorkK AGRICULTURAL EXPERIMENT STATION. 115 
on the average for 45 instances, about the normal shrinkage in 
milk yield. The rate of increase in live weight was noticeably 
reduced. 
A REDUCTION OF THE PROTEIN WHEN ABOVE 2.25 AND LESS THAN 
2.05 DBS. 
The only records available which show this reduction of pro- 
tein show a corresponding reduction of the total nutrients; 54 
records give, following this change in the ration, an average 
reduction in the milk flow about three times as great as should 
occur at the same stage of lactation... There was some loss 1n 
live weight but much less before the change of ration than after- 
ward. 
TABLE XXXVII.—A REDUCTION OF THE PROTEIN WHEN 
BETWEEN 2.25 AND 2.5 LBs. 

AVERAGE PER 
Day PER Cow. 
Per 1000 Las, LIVE WEIGHT. 







Total 
Digest- 
digest- Nutri- 3 
ther | es. | ait, | weve | AGRE | ah 
ganic ie “1 ratio. y : aoa 
matter. ¥ 
& Lbs. Lbs. Cal. Lbs. Lbs. 
a Before | 17.3 2.38 |84,455] 1:6.7 | 24.2 .99 
a] 
oq = 
Ss) After 14.9 2.05 29,961 Peis foeeen aod 
(0) 
ha 
= | 
Average of 54 rec-| 4 Approxt. | Dry Dry can 
ords from cows > mate cost | matter | matter in ; ) 
SS aae i BH Fat in of food in food | food for Spaea ts =. 
averaging as eo oO milk, for one for one one lb. Pepe Ae 
yrs. old and 5.4}  ™Y Ib. of ibook |) omiHK |e oe ng 
months in milk. Qo NE eee aoe ae solids. 
3 
~~ ro ———X~— |——————_ | ——— | ——_—_— 
= 
3 oe Per ct. Cts. Lbs. Lbs. Lbs. 
“oe Before 4.1 -63 1.0 7.5 5.0 
fH 
ras} 
° 
fj After 4.2 | -72 9 | 6.7 | 4.6 
A REDUCTION OF THE PROTEIN WHEN ABOVE 2 LBS., UNDER 2.25 LBS. 
The 65 records which cover periods when this change in the 
ration was made show an average decrease in milk flow consider- 
ably greater than it should normally be. There was a very good 
_increase in live weight. 
