The ranch. [volume] (Seattle, Wash.) 1902-1914, 1906-01-15

Ga, which were kept away from thei
tuberculous mothers and now fed OF
hay and grain, still gave no signs o
reaction. Calves No. So and 60 wer
slaughtered
Post-mortem of steer calf No. SIS
No LESSONS were found, with the eX
ception that both postpharyngeal lynn
phatic glands were tuberculous. The.
were enlarged to the size of an Eng
lish walnut and were both slightly cal
carious This calf was also sufferin.
from actinomycosis at the time of thu
slaughter, he having contracted thi
disease from being kept in pastur
with an electromagnetic COW.
Post-mortem of steer calf No. 60
In this calf both the bronchial lynn
phatics were diseased, containing ;
great many small foci which varied il
size from that of a pin head to that o
a pea. The extreme tip of the anter
ior lobe of the lung was tuberculous
the diseased area being about the siz'
of an English walnut.
All the tubercular foci in calf No. 81
were calcarious, while in calf No. 81
evidence of new foci of the disease wa'
quite marked. Calf No. SO, being /;
heifer, was not destroyed but was bret
and has raised calf which was place.
in another experiment. Nos. SO and Ga
check calves, are still alive and in {
healthy condition. One of them, {
heifer calf, has been bred and has
given birth to a calf.
The results obtained in these expert
ments are extremely interesting ant
if,1, r l,ln oh vi1oor hot
in five calves kept with tuberculous
COWS and allowed to suck them, one
hundred percent of them became tn
berculous inside of years time, while
those kept away from any source Of
infection, except the two weeks WheT
they were fed unheated milk, remain
ed free from the disease. Now in the
first experiment we are not able to tel
in which manner the infection occur
red, whether through the consumption
of the milk or by means of infection
by breathing contaminated air, there
fore it became necessary to carry or
the other experiment. Hence the mex
one carried on was to determine wha
percentage of the calves would become
affected with tuberculosis if they were
fed milk from their tuberculous dams
We used seven calves, all born from
these same tubercular COWS. The
calves were numbered 273, 274, 275
276, 277, 27S, 279. Nos. 276 and 27i
were twins.
Now, these claves were taken away
from their mothers as soon as they
were born and they were kept abso
lutely isolated from any source of in
lection except in their food supply
They were fed the fresh, unheatet
milk from the tuberculous COWS. Be
cause of being affected with tubercul
osis, the COWS were not very heavy
mixers, although they were fed very
liberal rationS, and some of them wen
dry a few months after coming fresh
In this experiment special care was
taken that every cow be MIXED, an(
that part of every cows milk be miXe(
and given to the calves, it making NJ
difference whether a COW gave but
few drops or a large quantity of milk
This was especially true of COW No. 5O
which developed Immediately aftel
coming fresh, cold, progressive, tn
bercular mastitis. The quarter of thu
udder thus affected was stripped a
every mllklHS. Inc calves VI ills ca
pertinent were fed milk from the tuber
culous mothers until September 4th
1905, when they were all tested, will
the result that every calf, excepting
No. 274, reacted to the tuberculin test
This is interesting because of the fac
that this calf was of a very wild dis
position and we were unable to ge
near him after he was two weeks old
so as to catch him and feed him hi!
share of the milk, consequently he re
ceived tuberculous milk only the frs
two weeks after he was born.
September 18th, 18th and 18th al
these calves were slaughtered and post
norton examination made. None O
them were in very good flesh although