62 UNIVERSITY OF WISCONSIN STUDIES 
TABLE I.—EFFECT OF UNDERFEEDING UPON THE PER CENT OF PAT 
IN MILK 
Jersey Cow No. 20 
Days Per cent Yield Grain Alfalfa Weight 
after calving fat of milk fed hay fed 
Pounds Pounds Pounds Pounds 
2 4.37 22.2 3.5 7 830 
4 5.80 20.9 3.5 7 807 
6 6.89 22.3 8.5 7 790 
8 7.21 23.1 3.5 7 187 
10 6.60 22.6 3.5 7 785 
12 5.86 21.5 3.5 7 780 
14 6.82 20.0 3.5 7 765 
16 6.00 19.1 3.5 7 755 
18 5.07 21.8 3.5 7 755 
20 4.94 17.2 3.5 7 730 
22 6.37 19.0 3.5 7 730 
24 6.82 19.6 3.5 7 725 
26 5.70 19.1 3.5 7 720 
28 6.26 17.8 3.5 7 720 
5.60 19.9 8.5 7 710 
32 5,53 20.4 5.5 ll 690 
34 4,74 24.4 7 11 710 
36 4.28 25.4 7 14 710 
38 4.49 25.0 7 lt 720 
40 4.45 25.0 7 14 710 
42 3.98 27.2 7 14 715 
44 4.83 26.7 ve lk 740 
46 4.27 26.1 8 16 700 
48 3.80 25.9 8 16 735 
50 4.23 27.0 8 16 747 
DOE alll Sh sreth adsanejadbared 25.6 8 16 725 
54 | 4.01 25.7 8 16 715 
56 4.47 23.7 8 16 720 
58 4.37 24.3 8 16 740 
in her being ‘excessively fat at parturition. Beginning ten 
days after the birth of the calf, this cow in seven days pro- 
duced 291 pounds of milk containing 5.1 per cent of fat. Her 
average for the entire milking period of eleven months was 
3.2, During the year she was fed a normal ration for a dairy 
cow, resulting in her being in a moderate condition only at 
the time of next parturition. 
Beginning the same interval 
after calving as before she produced 224 pounds of milk in 
seven days with an average fat percentage of 3.63. The 
average for the entire milking period was 3.00 per cent. 
