The Columbia herald. [volume] (Columbia, Tenn.) 18??-1935, 1914-05-15
HIGH SCHOOL PUPILS
. make TESTS OF MILK
UNDER GALLOWAY
THEY HAVE MADE ACCURATE,
SCIENTIFIC TESTS OF SIXTY
COWS TO DATE.
INTERESTING RESULTS DEDUCED
Made With Babcock Milk Tester, Re-
Gently Purchased by County Board
Of Educatlon-ResuIts Show Kind
I of Cows That Are Profitable.

/
The agricultural class of the Colum-
bia. High School has recently made
some very interesting experiments
with the Babcock milk tester, which
was purchased for the members by
the board Of education. The tests
were made under the supervision and
instruction of Prof. D. M. Galloway,
the head Of this department Of the
school.
! The milk tested was from sixty
COWS in Maury county. Among these
were found few that were extra
good, many that were only average,
and, quite a number that were not
very profitable, The following are
few figures taken from the records
of the tests made by the class:
Pure bred Jerseys averaged 6.4%
butter fat.
| Twenty-seven high grade Jerseys
averaged $3.50 butter fat.
/ Eleven low grade Jerseys averaged
4.45% butter fat.
All of the Jerseys averaged SO but
ter fat.
All cows Of the beef breeds 4.3%
butter fat. ).
These figures emphasize the i'm
portance of the choice OF, animals for
the purpose in view. Preference
seems to be given to pure BIRD ami
mails, although the figures hold out
hope for the farmer, who has not cap
ital to invest in pure bred animals,
that he may improve his herd by
breeding his cows to pure and well
bred bulls, and thus produce high
grade animals.
Another important lesson may be
learned from the comparison of few
individual records, taken at random
from cows giving about the same
amount of milk per day.
One COW, giving % pounds of milk
per day, showed only 2.2% butter fat
Another cow of same breed, giving
% pounds of milk per day, showed
so butter fat.
Another COW, giving "a pounds Of
milk per day, showed 1920 butter fat.
A fourth, giving "a pounds of milk
per day, showed SO butter fat.
These records show that it is not
enough to have pure bred animals Of
a particular breed. but that each COW
must be valued according to her indi-
,vidual merits. For instance, the first
COW, giving 20 pounds Of milk, would
make only about pounds Of butter
per week. while the second COW, CIV
ing exactly the same amount Of milk,
would make more than pounds
weekly. The expense Of keeping the
first cow is the same as Of keeping
the second, yet she produces less than
half as much butter.
Another comparison was made Ut
two COWS, both fresh and each test
ing the same percentage Of butter
fat. Both were grade Jerseys. Each
+, tested 4.4% butter fat. The first,
however, gave only Is pounds Of milk
daily, while the second gave 81
pounds. The first made only SIS
pounds Of butter per week, while the
other made 1925 pounds weekly. In
this case it cost more to keep the
second COW, but this was Offset by
the value Of the additional skim milk
she gave. Furthermore, she had a
margin over the first Of rs pounds OF
butter per week. It was thus far
more profitable to keep her than the
first.
The high school pupils are doing
valuable. first hand experiments in
testing, and all Of them are finding
it very profitable. They are infinite
ly more expressive than when simply
read and studied in book.
HAITI PAYS CLAIM