The Hocking sentinel. [volume] (Logan, Ohio) 1871-1906, 1895-06-13

of great size, elasticity and length. II
, regarded the cows possessing these al
tefies as of special merit.
The Importance of the artery may b
explained from the fact that the mil
secretion is dependent upon the amour
of blood passing through the gland.
The nervous system, which is int
mately associated with the udder, play
an important part in regulating tn
milk supply. According to Rochrig,
nerve starts from the lumbar portion
of the spinal cord. and divides in tn
pelvis in three branches. Two of thes
branches enter the udder, while tn
third is associated with the muscles o
the abdomen. Those which enter tn
milk gland are subdivided, SO as t,
practically permeate the entire udder
one branch being lost among the vesi
cles, another in the milk cistern, and
third terminating in the teat.
When the milk is drawn from tn,
uddcr, the action on certain nerves o
the teats, affects the secretion. If tn;
| udder is drained, secretion follows
rapidly at first and then more slowly
During milking. one nerve is stimulat
ed, which arrests milk secretion
through the construction of the BLOOD
vessels supplied to this gland. Wher
the irritation ceases, the walls of the
blood vessels are relaxed, more BLOOD
passes through the gland, and its ac
tivity is increased.
1t has been assumed that the secre
tion of the milk is analogous to the Sc
cretion of the saliva, and such is prob
ably the case.
What relationship has the shape oi
the udder TO its producing capacity:
In the brief descriptions of model ud'
ders where COW is described, it is us.
ually specified that it shall be blecky
and extend well along the belly, and
be carried up well behind. That will
do perhaps, so far as it goes. But that
is not enough. l apprehend that the
average man who purchases n milk
COW, does not comprehend the real
shape of the udder on his cow, One is
easily deceived. unless he lowers his
head on a level with the gland, and
surveys it from various standpoints, so
as to get the correct conformation, al
though leg does partly obstruct the
view. The udder may have a tilt, or a
straight line in its greatest curve, that
will be easily misjudged or even over
looked.
A perfect uddcr is q difficult thing to
find, but we find one now and then. In
such case, the side outline of the nd
der approximately occupies the arc of
a circle. The more perfect the udder,
the further along the belly. and the
higher up behind toward the vulva
will it extend. Ordinarily the capacity
of the hind part is greater than the
front half, as / will soon show. 1t is
also noticeable that the front udder is
more frequently deficient in develop
ment, than is the hind part. For this
reason the American Jersey Cattle
club sets n higher scale of points for
the front than for the hind part,
crediting 13 to a perfect fore, and II to
perfect hind udder. Would it not be
wise decision for the other dairy
breed associations to set similar
standard of valuation upon these parts?
For example, the Ayrshire association
scores the perfect uddcr and milk veins
30 points, and the Holstein- Friesian
association the udder and mammary
veins 90 points-12 for the former and
10 for the latter.
So far as could learn there were no
statistics available showing the differ
ence in milk yield of front and hind
parts of udders. The impression ex-
listed with me that poor front gave
less milk than the hind part OF the
same udder. In order to secure data
on this question l had the milk of
the front and hind parts of Is differ
ent cows millied, each by itself, and
weighed. These cows were
owned by three different persons, and
a part of them by Purdue university,
and represented various classes of I'D
ders. These SO different milkings
show a gain of 31.0 lbs. or 2215 in favor
Of the hind part of the uddcr. These
figures seem reasonable and i believe
fairly state the difference existing un-
der average conditions.
If, however, we compare types of
udders, we will secure different class
Of results. In making the Ga weigh
ings involved in the above study, it
was observed that all cows did not
give the most milk from the hind I'D
der. If the form YVES what one might
term well-balanced, coming fairly well
beyond the front teats to the belly and
up behind, SO that vertical
line drawn between the teats prac-
5ically divided the udder in two parts,
-he amount of milk given from the
front part wns very nearly the same as
given by the hind part.
III view of these facts l believe that
t is desirable to practice selection and
% increase the percentage of cows hav-
ng udders of n high type. This cer-
.ainly will appreciate the value of the
Individual and increase the milking
capacity.
In connection with the preceding
work the question arose, is there any
difference in the capacity of
.he right and left gland of the udder?
No figures were available on this sub
ect that ! could find, SO a series of
Weights were taken. The sum total
,ield of each gland shows no material !,
only . lb. Seven of the IA
Weights were practically the same, the
Inference ranging from nothing to a
b. Consequently these figures would
urnish us evidence for believing that |
n the same COW where the udder is !
lot defective, the capacity of one
,land is practically equal to the other.
In conclusion, / wish again to en-
'hasize the necessity and desirability
# making the milking feature of the
airy COW her most prominent one,
nd this through perfecting the de-
of the mammary glands.
let us breed more high types.
In London, the other day, Mr.. E.
Iatthews, aged 70, and Miss Mary
Bright, aged Sc, were married. 1t was
that the happy bridegroom
ad been courting the bride for MP