The Redwood gazette. [volume] (Redwood Falls, Minn.) 1873-1940, 1878-01-10

sc per cent. The fatty matter in
creased as the day progressed, being
2l per cent. in the morning, 81 per
cent. at noon, and 81 per cent. in the
evening. The casein stood q per cent.
in the morning and p per cent. at
night; but the albumen was "A per
cent. in the morning, and 81 at night;
and the sugar was less abundant at
midnight, being Al per cent, while at
noon it was AZ per cent. The percent
age of salt remained about the same.
Such is the result of the analysis of the
milk of this one COW, made under cir
cumstances and conditions which are
not given, but which may of them
selves have caused all the variations.
1t would be interesting to know some-
thing about that cow, and just exactly
how she was kept. Indeed, without
this information, the analyses amount
to nothing practical, and give us no
light on the subject of milk produc-
ton. The "why'' of the whole thing
remains a mystery, even if we accept
the facts.
The manner in which this subject has
been treated by Prof. Arnold is much
more satisfactory. His experiments
show that frequency or infrequency of
milking has much to do with the per-
centage of cream. Once every twelve
hours gave 12a per cent. of cream;
once every three hours gave III per
cent. When the days are shortest the
milk is richest at night; when the long
est the milk is richest in the morning.
Equal periods of time produced equal
results in quality. Again, the time
during which the COW is the most COM
Portable is the one which yields the
richest milk. Flies in summer or cold
in winter reduces the quality. This, or
much of it, seems to be the very oppo-
site of the result of the experiments of
Boedeker, who found the milk growing
richer as the day wore away. He prob
ably did not take into account the fire.
quency of milking, nor the comfort or
discomfort of the COW. At least, the
Globe says nothing about these things
in the paragraph which we find copied
from it.
Prof. Arnold further found that the
larger globules passed through the milk
duets with more difficulty than the
smaller ones or the water, and hence
were later in getting through into the
cavities above the teats; consequently
the strippings, or the milk last drawn,
is not only the richest, but contains the
largest and best globules of fat-those
which rise quickest when the milk is
set. And, again, he found that the
milk, by laying in the milk duets for
time, lost some of it's richness by alb
sorption, the little absorbent vessels
taking it up for other uses than adding
quality to the milk. "That the milk
loses considerable from this cause"
he says, els evident from the fact that,
when the flow is small, it is all taken
up in this way.'' He found, in the case
of the udder which he examined, that
the milk glands in the upper part of the
udder were the largest, and hence like
ly to secrete the largest globules. This
is another probable cause for the last
milk drawn being the richest.
1t follows from all the foregoing that,
to test the richness of a cows milk at
different periods during the twenty-four
hours, several circumstances and con-
ditions must be observed. The cow
must be kept equally comfortable and
quiet during every period. She must
be fed and cared for precisely the same.
The intervals between milkings must be
alike, and the milking should be done
with equal quickness and in the same
way. 1t is quite essential that all the
milk should be drawn at each milking.
Indeed, there are so many things likely
to vary the quantity and quality Of the
milk, that several experiments with the
same and with different cows, under the
same and under different conditions and
circumstances, are necessary to reach a
positive conclusion. A little more or
less water drank during one interval, or
a little more food taken-things which
could scarcely be avoided-might have
their influence. Variations in temper
ature, or in the conditions of the atmos-
phere as to moisture, would be likely to
affect the result somewhat. Everything
points to the fact that the COW is very
sensitive and delicate machine, respond
ing to all the changes in her surround
ings, Notwithstanding the large amount
of ill-treatment she is able to bear and
still give some grateful return through
the milk-pail for the little good usage
that she may receive.-Ihe american
Dairynaan.