Oxford Democrat. [volume] (Paris, Me.) 1833-1933, 1915-04-06
Value Of sklmmllk Explained.

Chemistry has opened up Q new, held
for investigation In the last ton years oy
Ito discoveries In the realm OF protein
digestion and metabolism, how protein
10 converted into cell or body tissue. A
single grain may consist Of several diff
fereut kinds of protein in acertain ratio,
while another grain may consist Of other
proteins or the same proteins In diner.
emit ratio. 1t Is for this reason that OF
two feeds containing the same amount
OF total protein, one may not contain the
same proteins or the same proteins 10
the same ratio az the other and there
fore may not be as efficient and OF like
value. Wheat contains certain proteins
that are lacking in some one or more OF
the elements necessary for growth and
reproduction, and into which protein 10
divided by digestion, and therein lies its
ineficiency as feed. Milk contains all
the proteins necessary for proper growth
and therein lies its great efficiency.
These facts are we'll brought out by
some experiments recently concluded at
the Wisconsin Experiment Station.
In feeding pigs weighing from oo TO oo
pounds, they found that when the pro
tein In the feed Is taken from OATS
wheat, corn, or mixture of the three,
that under normal conditions from 22.S
to 27.7 percent of the nitrogen (protein)
consumed 10 retained by the animal in
building up it's body; when the proteint
in the feed came from milk casein and
from skimmilk, and in only two-thirds
the amount given in the grain, the pigs
stored 45.5 and SO 2 percent respectivel!
OF the nitrogen consumed, the skimmiik
being the most efficient.
Not content with testing this on pigs,
the experiment was extended to calves
Calves weighing 300 to 400 pounds we're
fed rations In which the protein came
from corn alone and alfalfa alone, an0
calves weighing 100 to 125 pounds were
fed rations in which the protein came
from skimmilk alone. Those calves
that received their protein from corn
alone, retained "a percent Of the nitro
gen consumed; those getting protein
from alfalfa alone, retained 2S percent OF
the nitrogen consumed; while those that
received their protein In the form oi
skimmilk retained 65 percent of the nj
trogen consumed.
In the way of explanation It may be
said that the retention of nitrogen repre-
sents growth and increase In body
weight, and 10 merely . method OF deter
mining results accurately. If live weight
alone we're considered We might have
the fact of the moisture content OF the
flesh disturb the exact determination.
We have often said in these columns
that skimmilk seems to have . certain
good effect in producing growth In
calves that is not indicated in its chemi-
cal analysis. We have talked often of
the value of skimmilk, and these expert
ments emphasize the matter more
strongly than ever. 1t will be noted
that for these growing animals skimmilk
was from two to three times as efficient
as the cereal grain proteins.
In discussing the value OF proteins
from different sources, Professor Z: b.
Hart, who Is in charge of the animal nu
triton Investigations at Wisconsin, call,
ed our attention to the report we printed
last November concerning the Indiana
experiment in the use OF equal amounts
of blood meal, hominy meal, linseed oil
meal, and red dog flour as q calf meal
substitute for skimmilk. He said he
felt quite certain that the efficiency of
that calf meal resided largely in it's in-
clusion Of blood meal, an animal protein
The growing animal seems to require TOR
It's proper growth this animal protein,
which is only found In milk or the pro-
teIn tissues Of animals.-Hoard's Dairy
man.