The circle banner. [volume] (Circle, Mont.) 1914-1939, 1924-07-11
BY j. o. TRETSVEN,
airy Specialist, Montana State Col
Iege Extension Service.

lege ExUeHSIOn service.
w YHEN considering the erection
| w of new dairy barn or the re
w modelling of the old one, tn,
matter of ventilation should be on'
of the important considerations. Tot
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, and
that because of lack of fresh air
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 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 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 al
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 continuous process and |
is accomplished by diluting theair in |
the barn with fresh air in such guam |
Titles as to maintain the desired de- |
gree of purity. The foul air in the |
barn escapes as the fresh air enters. |
TO maintain health, fresh air is
as 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
md other buildings in which human
'eings live orwork in more or less
lose quarters.
The need for ventilation of COW
tables is consequence of the in
reased demand for clean, wholesome
mix at low cost of production which
as 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 greater {
inter production of milk has been !
ought. Large winter production re- t
uires that tightly built shelters for
ows be provided, particularly in the f
older sections of the country. Tight c
constructed barns are apt to be
amp unless ventilation is provided, v
nd the stabling of animals in dark, t
oorly ventilated, damp barns af- a
cts their health and helps to spread r
Iberculosis among the stock when v
Ter the germs are present. Clean, t.
holesome milk can be had only from l,
ealthy COWS. f,
"a good ventilating system pro- T
,rly installed and operated, will: G.
, supply without darft the album
lnce of fresh air necessary to the b
'alth and comfort of the COWS; (2) il
axe possible control of barn temper b
ure; CD preserve the building and b
ed stuffs from mold and rot due to d
cessive moisture and make spon- O
neous combustion less likely: (4) r.
Divide a measure of disease proven d
IN and control.
ga dairy COW breathes approx ii
ately 116 feet of air per hour, or IL
ore than 20pounds per day. The 81
81