138 STORRS AGRICULTURAL EXPERIMENT STATION. 
A STUDY IN MILK SECRETION, 
REPORTEHD BY C:. LL. BHACH: 

The quantity of milk and fat secreted by the cow each day 
is fairly constant. Variations independent of food consumed 
do occur, however, and from various causes. ‘The tables below 
show the increase in the amount of milk and of fat secreted 
as a result of milking three times per day. _ 
In Periods I. and III. eight cows were milked twice per 
day, at 5:15 A.M. and 4:45 P.M. During Period II. the same 
cows were milked three times per day at uneven intervals for 
five days, an additional milking taking place at I1:00 A.M. 
Tables 61 and 62 show that the eight cows when milked twice 
per day gave in six days an average total of 187.6 pounds of 
milk and 8.56 pounds of fat. Asa result of three milkings 
daily they gave 212.5 pounds of milk and 9.77 pounds of fat. 
This is an increase of three pounds of milk per day per cow, 
or 13.6 per cent., and .15 pound of fat, or 14.1 per cent. 
TABLE 61. 
Average Daily Milk Flow of Eight Cows. 












PERIOD I. PERIOD II. Milked Three Times Daily. PERIOD III 
NAME OF Milked *. a | ie Le : i ie 
Cow. orice 5:I5 A.M. | ITD A.M. | 4.45 P.M. Total bar 
Day Pounds. | Pounds. | Pounds. Pounds. Deal. 
Pounds. | Pounds. 
Olive, - hl eo 10.0 5.3 | 8.4 23% iy Pay) 
Holstein, 5-12 52522 14.1 O27 10.6 Cua 22.4 
DBiutterhy, a) ~via ese 8.5 Sa ae 2.9 i hn Tay 
Dally DD, cic 27.3 14.6 OFA ks (hes @ Be 32:2 25.8 
Black, - eed ie DO 13.9 7.5 4.9 2) 27.9 
Plack ean S51 LSs2 ake Ye 4.3 28.8 25 
Fairview, - 24.6 Teer Gato Fi 27.0 26.6 
Stella B, s 2oat 12/04) y AS baa 5.5 25.4 an. § 
2 | 3 108 
Average, Ses es 13.02 | 7.06 | 6.47 26.56 23.46 
Total, - 187.6 104.2 | 104.2 51.8 212.5 187.7 

