The circle banner. [volume] (Circle, Mont.) 1914-1939, 1924-07-11

sary for the proper combustion an(
assimilation of her food and very
small amount of carbon dioxide. III
| respiration, oxygen is taken in anc
carbon dioxide given off. When all
is inhaled, a part of the oxygen il
contains is utilized by the body and
wehen it is exhaled it is warmer than
when taken into the lungs and it con-
tains a reduced amount of oxygen
and an increased amount of carbon
dioxide absorbed from the body. Ow-
ing to the fact that the per centage of
carbon dioxide is usually the test of
the degree of ventilation, it is fer
quently assumed that it is a poison.
This, however, is not the case. Car
bon dioxide should not be confused
with carbon monoxide, gas which
often forms when silos are filled or
| q gas engine operated in closed
room, and which causes many deaths.
In "a hours a COW will exhale from
IL to IS pounds of moisture and a
somewhat smaller amount of carbon
dioxide. 1t will be seen, therefore,
that if the COW were CHARTERED in an
air tight barn, so that she would be
forced to breath the same air re-
PCdICdlyS tnC dluOuHI VI GAY SOn III IlO
air would be steadily reduced and it's
stability for breathing correspond
ingly impaired and the air would
soon become warm, moist and of a
bad odor.
s'To avoid this condition the air in
the barn must be constantly replaced
by fresh outside air, and it was sug-
gested by King that for the mainten-
ance of satisfactory conditions, $500
cubic feet of air per COW per hour
should be supplied. In order to per-
NIT the entrance of the fresh air an
equal amount of used air must be |
and in order to do this a |
must be established. This |
is the function of the ventilation sys-
tenn.
The heat given off by the animals
stabbed in the barn must be en-
ployed to maintain the temperature
at comfortable degree and also as
the motive power to produce circula-
ton of the air; hence there must be
enough generated to insure adequate
of air without lowering
the temperature to an uncomfort-
able degree. 1t is possible to main
ain a comfortable and fairly uniform ,
in well-built barn and
yet be an appreciable circulation of
lir. Tests have shown that the GUAM
ity of milk yield is affected by sud-
len changes in temperature. Cows
end to give somewhat less milk when
he temperature changes suddenly
tut the effect isonly temporary.
sudden changes in temperature are
voided inbarns which have a we'll
egulated ventilation system. Good
with the consequent di-
ltion of the impurity of the air, is I
he aim of all systems of ventilation,
ut in operating the system the COM
ort of the animals must be consid- p
red as we'll as purity of the air a
Poor ventilation causes damp, N
ct barns. Inthe colder sections of N
le United States, unventilated barns Of
re frequently found in which the A
oofs and ceilings are dripping wet
18th condensed moisture, a condi- h,
on which is the cause of serious
sses due to the moulding of the a
ed and hay stored in the building. r.
he feeding of moldy hay to dairy in
,ws cause additional losses. w
Excessive moisture on the roof NJ
)ards and the rafters causes mold al
g and rotting, and instances could We
, cited in which timbers in new -
arms, where such a condition was \,
have completely rotted =,
+ in few years. Moisture causes W
lsting of steel equipment, iron 60
pes and other metal parts. e..
Ventilation aids in the proven n
On of spontaneous combustion in ~
e hay mows and graneries. Lack of w
ace will not permit full discus ~
on of this phase of the ventilation ~,
'oblem, which is nevertheless an ~
lportant one. The reader will no :.
'ubt recall incidents in his own ex- ~ NJ
rience in which fires have occurred bs
hay barns, especially in those in I'D
lich legumnious hays were stored.
'ually these fires result in total loss
facilities for fighting fires are in ca
ost instances lacking. ue
while the loss of feed and the de- W
,uction of thinkers NAV constitute tn
zoo economic 1osses tba n,ainte,o cit
ce of the health of dairy animals ny
of greater Importance, because the 10.
alth of citizens of this country is III
eatly dependent upon the consump- IN
N of the products of this class of nis
I'm animals and the wholesomeness er
these products. The effect of poor ina
initiation is often not apparent un- Iel
the damage is done. Continued OF
eathing of foul, damp air lowers CT