30 
BULLETIN" 1166, U. S. DEPARTMENT OF AGRICULTURE. 
and silage was made by the " reversal " feeding method, as in the 
experiment with apple pomace, except that in this pectin pulp trial 
the test periods were 20 days, with 5-day transition intervals. The 
quantity of grain and soy bean hay fed was kept constant throughout 
the trial. Table 13 summarizes the data obtained in this feeding 
trial. 
Table 13. — Comparison of yield of milk from cmr fed on dried a 
with that from coir fed on corn silage. 
pplc-pectin piulp 
Feed consumed. 
Yield. 
Feeding period No.' 
Corn 
silage. 
Pectin 
pulp 
(mois- 
tened). 
Grain. 
Soy-bean 
hay. 
Milk. 
Butter- 
fat. 
1 
Pounds. 
560 
640 
600 
Pounds. 
Pounds. 
140 
140 
140 
140 
Pounds. 
200 
200 
200 
200 
Pounds. 
311.5 
312.6 
312.0 
a 356. 9 
Pounds. 
14.32 
3 
14.99 
Average 
14.65 
2 ! 
726 
* 15. 69 
1 Feeding period, 20 days. 
» An increase of 14.4 per cent when the pectin pulp was fed. 
' An increase of 7.1 per cent when the pectin pulp was fed. 
The pectin pulp seemed to be of average palatability, and no bad 
effect on the health of the cows was noted. In the short palatability 
test, one cow received 58 pounds of the moistened pulp, equivalent 
to 14| pounds of the dried material, in a single day. 
An unusual increase in milk yield occurred during the period when 
pectin pulp was fed, but this could not be considered conclusive as 
the test was conducted on one cow only and for a relatively short 
time. 
Milk Production Trial. 
Dried pectin pulp has about the same proximate composition and 
ability to absorb readily two or three times its weight of water as 
dried beet pulp. For this reason beet pulp was selected for compari- 
son in the principal production test. 
The feeding trial, conducted by the double reversal method, was 
started late in April. 41 Six Holstein cows, three pure bred and three 
grade, were divided into two groups. One group received soaked 
beet pulp ; the other was fed the soaked pectin pulp as the succulent 
portion of the diet. Ten days were allowed for the cows to become 
accustomed to their rations, and data were then taken for a period 
of 30 days. At the end of this time the rations were reversed, and 
after a 10-day transition interval, data were recorded for another 
period of 30 days. 
Both the pectin and beet pulps were prepared by moistening them 
with three times as much water, by weight, and they were allowed 
to stand (soak) from one feeding period to the next. Forty pounds 
of wet pulp per day was offered to each cow in both groups. The 
remainder of the daily ration consisted of about 10 pounds of alfalfa 
41 The time of year is mentioned because of the effect that the hot weather 
to have exerted on the appetite of the animals ifor the novel feedstuff. 
believed 
