The Kevin review. [volume] (Kevin, Mont.) 1922-1929, 1924-07-10
BY J. 0. TRETSVEN,
Dairy Specialist, Montana State Col
lege Extension Service.

7HEN considering the erection
M of a new dairy barn or the re
w modelling Of the old one, tn
matter of ventilation should be on
of the important considerations. To,
often the ventilation problem is ig
nored or left to chance because o
the small expense of installing a ven
tilating system. Such economy usu
ally results in far greater losses lat
er on.
When it is considered that fol
proper health, each COW should have
$500 cubic feet of air per hour, anC
that because of a lack of fresh all
and proper ventilation the health Of
the stock may be impaired with the
accompanying dangers to humans
inferior and reduced production re-
suits, barns and equipment deterior.
ate more rapidly and the menace OF
fire is greater, the Importance of ven
tilation takes on a new light.
Some consider that when enough
cracks and knot holes are left in the
sides of the new barn, the ventila-
ton problem has been simply taken
care of. Others think the opening
of a window or door provides suffi-
cient ventilation to meet the require
ments. These, of course, are COM
mon notions but have no foundation
in fact. Such ventilation often does
more harm than good.
A recent bulletin by the United
States Department of Agriculture
takes up the real purposes of ventil-
alton and well brings out the bene-
fits and protection provided by a
good ventilating system.
ventilation in a barn is the pro-
cess and practice of keeping a barn
supplied with proper air for breath
ing. tits a continuous process and
accomplished by diluting theair in
The barn with fresh air in such guam
as to maintain the desired de-
gree of purity. The foul air in the
barn cap as the fresh air enters.
ITO maintain health, fresh air is
essential for cows, horses, hogs
and other stock as for human be-
ngs; ventilation in barn and other
buildings in which stock are kept,
S just as necessary as a health meas
Ire, as in homes, schools, factories
other buildings in which human
live orwork in more or less
lose quarters.
The need for ventilation of cow
tables is a consequence of the in
demand for clean, wholesome
milk at low cost of production which
las made it necessary that each COW
hall produce as much milk as pos
ible. In order to increase produc-
ion breeders have developed the
Ugh producing cowand a greater
winter production of milk has been
Large winter production re-
uires that tightly built shelters for
ows be provided, particularly in the
older sections of the country. Tight
Y constructed barns are apt to be
amp unless ventilation is provided,
nd the stabling of animals in dark,
oorly ventilated, damp barns af-
ects their health and helps to spread
tuberculosis among the stock when
yer the germs are present. Clean,
rholesome milk can be had only from
COWS.
"a good ventilating system pro-
erly installed and operated, will:
u supply without darft the abun-
ance of fresh air necessary to the
ealth and comfort of the COWS; ca
lake possible control of barn temper
ture; CD preserve the building and
sed stuffs from mold and rot due to
xcessive moisture and make spon-
lneous combustion less likely; (4)
rovide a of disease prevent
and control.
"a dairy COW breathes approx
lately 116 feet of air per hour, or
lore than 20pounds per day. The