Manchester Democrat. [volume] (Manchester, Iowa) 1875-1930, 1908-08-26

COWS which will not pay. There is
] variation in milk in single COW.
The variations in the test 9of single
cows from milking to milking or from
day to day are greater than many
cow owners suspect. There is no
uniformity in this variation, except
that the quality of the milk, pro-
duced generally improves with tthe pr
gress of the period of lactationst Even
this may not be noticeable except
when the averages of numBer OF
tests made at different stages during
the lactation period are compared
with each other. When COW gives
her maximum quantity of milk short,
ly after calving the quality of her
milk is generally poorer byr1 per cen
of fat or less than when she.is dry
ing off. Strippers' milk is, therefore,
as rule, richer in fat than the milk
of fresh cows. t.}a
By testing separately every milking
of number of cows through their
whole period of lactation the results
obtained have warranted the, follow
ing conclusions in regard to the var
iations in the test of the milk from
single cows:
4 Some cows, milk tests about the
same at every milking. Such COWS
generally give uniform quantity of
milk from day to day. Other COWS
giyemilk that varies in an unexplain-
able way from one milking to an
other. Neither the morning nor the
evening milk is always the richer.
and even if the interval between the
two milkings is exactly the same the
quality as well as the quantity of
milk produced will vary considerably.
Such COWS are mostly of a nervous
Temperament, and are easily affected
by changes in feed, drink, or sur
rounding conditions.
A test of only one milking may give
a very erroneous impression of the
laverage quality of a certain cows
milk. A composite sample. taken from
four or more successive i,iIlsings will
more nearly represent the quality OF
the milk which COW produced.
The variations that occur in testing
the milk of single cows are Illus
trated by the following ffgsres that
obtained in an experiment. Tested
COWS during the whole period Of lac
tation. The cows were fed on heavy
grain ration consisting Of corn meal
six pounds Of wheat bran, anf four
pounds of linseed meal per- day per
head. This system of feeding tried
for the purpose of increasing if pos
sible. the richness of the milk. The
influence of this heavy grain feed, as
we'll as that of the first pasture
grass feed, on Inequality and the gu
antity Of milk produced \ will show
I.you in. the following figures which
SgtYe the completesaveragesd data f0r OF
of the COWS, No. 3. The daily milk
yields; December-Average twelve
pounds. highestsixteen pounds. low.
est ten pounds; test of one days
milk, average 3.S per cent, highest AS
per cent, lowest 3 per cent. Jan
uary-Ayerage sixteen pounds, high.
est seventeen pounds, lowest, fourteen
pounds; average test 81 per cent
highest test 4.6 per cent, lowest 81
per cent. February-Average, sixteen
pounds, highest seventeen, 4, pounds
lowest 1876 pounds; average4te 3.6
per cent, highest test S..per cent,
lowest 3.2 per cent. March-Average
fourteen pounds, highest sixteen lbs,
lowest 1875 pounds; average test 3.S
per cent, highest AT per cent, lowest
S.4 per cent. April-Average thirteen
pounds, sixteen pounds, lowest. elev
en- pounds; average test 4. per cent,
highest test 5.S per cent, lowest test
per cent. May-Average 14.5 lbs,
highest seventeen pounds, lowest ten
pounds; average test 3.S per cent,
highest test 4.6 per cent; lowest 3.4
per cent June-Average twelve lbs
highest fourteen pounds, lowest nine
!, pounds; average test 3.9 per cent,
highest test 4.6 per cent, lowest 3.2
per cent. July-Average nine pounds
pounds, highest twelve pounds, loves
, six pounds; average test AZ per cent
highest test 6.2 per cent, lowest test
2.S per cent. August-Averagei 6.5 lib
highest 9.25 pounds, lowest SO lbs
average test AZ per cent, highest tes
7.9 per cent lowest test 2.9 per
cent.
\ Causes of variations in fat content
are the following conditions: Rougi
treatment, exposure to rain or bat
! weather, change of feed, change o.
mixers. length of interval betweel
/ milkings, unusual excitement. n,
5 Aside from thanges like those Civ
en- above, the quality of omefyeows
t milk will often change without an,
3 apparent cause. The dairyman VIII,
e is in the habit Of making tests O
n the milk of his individual COWS a
: regular intervals will have, materia
for study in the results obtained an,
: he will soon be able to tell from tn,
e tests made, il these are CONTINUED
e for several days, whether, or not TIL
e COWS are in normal healthy con
M (.