The Portland daily press., 1893-06-06
A DREAMING EXPERIMENT.
May We Mix Last Nights Cream with This
Mornings Milk?

MORNINGS Milk?
A short time ago we were asked
whether any injustice would result to
either creamery man or patron il the
latter should set his evenings milk, skim
it in the morning, mix the cream with
the mornings milk and send the mix
ture to the creamery instead Of sending
the milk of both evening and morning,
as is the usual custom. The most salts
factory way to answer all such queries
is by practical demonstrations, and it
was determined to conduct an expert.
ment bearing on the point in question.
Milk was taken Immediately after
milking and set in Cooley cans in water
at temperature Of ~ degrees. The
temperature Of the milk was 0e degrees.
The milk set from Z in the evening until
7:45 the next morning, or nearly 10
hours, when it was skinned. At that
time the temperature Of the water was
40 degrees, the ice used having reduced
the temperature two degrees. The skim
milk was drawn off by means Of siphons
provided for that purpose at the bottom
of the cans
The first II inches Of milk below the
cream line were left with tho cream.
The cream was then well mixed with
the mornings milk from the same cows
and weighed and tested. The following
table shows the weights Of the evening
milk, morning milk, skimmilk and the
mixture OF cream and mornings milk,
the per cent Of fat and the number Of
pounds of butter fat in each lot Of milk:
Per cent Pounds
Weight. fat. fat.
Evenings milk....... 81 $40 2Il
Skimmilk .............. 50 20 10
Mornings milk........ 6S $50 2.24
Mixture of cream and
mornings milk. $3.50. 50 $40 A3l
In this table the fat in the skimmilk
plus the fat in the mixture should equal
the fatin the evening milk plus the fat in
the morning milk. It will be noticed that
there is a difference of .08 Of pound,
but with ordinary test bottles the per
cent cannot be read close enough to avoid
such small error.
A composite sample OF the evening
and morning milk tested 3.25 per cent
fat. Where creameries are conducted
on the separator system the general GUS
tom among the patrons is to take in both
evening and morning milk and haul
back the skimmilk In this case there
would have been 1876 pounds Of milk to
be taken to the creamery testing 3.25
per cent fat, as above noted. For this
4.58 pounds of butter fat, at 20 cents per
pound, the patron would have received
87.6 cents.
By skimning the evening milk and
mixing the cream with the morning
milk there were 8S pounds Of the mixture,
which, as shown in the above table,
yielded 4.81 pounds fat. At 20 cents per
pound this would be 66.2 cents. That is
to say, the creamery man would lose
nothing if the cream and morning milk
was delivered instead Of the milk of
both evening and morning, and the pa
irons loss would be only the amount Of
fat he left in the skimmilk.
Whether this loss would be small or
great would of course depend on the
efficiency Of dreaming, and this in turn
would be governed mainly by the meth
DDS employed in handling the milk.
Whether it will pay patrons to set the
evenings milk, skim it and send in the
cream with the mornings milk is some
thing that each must determine for him.
self. The advantages of the plan are
obvious. 1t would save hauling large
quantity Of milk, and the skimmilk be-
ing always sweet would certainly be bet
ter for the calves than when the whole
milk is taken several miles, run through
the separator and hauled back through
the hot sun, often souring before it can be
fed.-Bulletin Iowa Agricultural Expert
ment Station.