© 
G4 Report OF DEPARTMENT OF ANIMAL HUSBANDRY OF THB 
INCREASING THE AMOUNT OF NUTRIENTS. 
The average from 268 records when the amount of total nutri- 
ents in the ration was increased shows no shrinkage in milk 
yield following the change. The relative increase of protein in 
the ration was much less than that of the total nutrients. The 
average month of lactation was 5.1 and the average age about 
4.7 years. The gain in weight was very slow. before the change 
and averaged over one-half pound per day afterward. 
TABLE J].—AN INCREASE IN THE AMOUNT OF TOTAL NUTRIENTS. 
AVERAGE PER 
! 4 . na 
PER !000 LBs. LIVE WEIGHT, Day PER Cow. 

Total Digest- 
digest- ible Fuel Nutri- | wik | Fatin 

ible or- a I tive 3 
hia ies value sation yield. milk, 
matter. 
Lbs. Lbs. Cal, Lbs. Lbs. 
Before| 14.4 | 2.19 '28,618} 1:6.4 | 22.0 sou 
ge 

After 16.1 | 2.29 32,297 1:6.8 | 22.0 89 
Digest- 
Approxl- Dry Dry Fie dee 
mate cost | matter | matter in matter in 
Average of 268 rec- 
ords from cows 
=| 
(sj 
oq 
cS) 
© 
f4 
BS 
2 
. —~ Fat in of food infood | food for 
averaging 4.7 ae milk. forone | forone| one lb, ~ ig 
yrs. old and 5.1] «3 lb. of Ib. of | of milk Of nie 
months in milk. me ry milk. milk. solids. solids. 
rt 
pet eS a ee eee 
aes) 
2 Per. et. Cts. Lbs. Lbs. Lbs. 
32 Before 4.0 as 1.0 Tek 4.6 
1 8 
os 
& After 4 0 712 

REDUCING THE AMOUNT OF NUTRIENTS. 
The average from 263 records when there was a reduction of 
the amount of total nutrients shows a shrinkage in the milk 
flow twice as great as would generally occur during the same 
time at this stage of lactation without change in the ration. 
The average reduction in the amount of protein was slight. The 
average month of lactation was 5.7 months and the average age 
4.9 years. The gain in live weight, which was at the rate of 
