—Lancaster Farming, Saturday. Jan. 17, 1976
22
Milking school speaker focuses on mastitis e
Steve Spence, Penn State dairy specialist, checks
the vacuum pump of a milking system during the
milking school held this week in Lancaster County.
s^lamira
Medical Fact Or Fiction?
Can you separate medical
fact from fiction 9
Most people now know
that a child does not develop
buck teeth because a horse
frightened his mother during
her pregnancy. Also, that a
mole on the child’s body can
not be traced to the mother’s
craving for strawberries dur
ing that period
But some medical myths
persist, even among generally
knowledgeable individuals.
For example, are you under
the impression that you can
“catch a cold” from standing
or sitting in a draft, getting
your feet wet, or going out
in the ram without a hat 9
In a medical guide for the
layman, the physician-authors
refer to the myth that expo
sure to the elements leads to
colds
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portant to discuss because they usually proceed the
clinical or severe cases of mastitis.”
‘‘Cows with this form of the disease do not perform up to
par and this is where production slips."
Comparing the two forms of the disease to an iceberg,
Eberhart stated, ‘‘clinical mastitis (severe) is like the tip
of the Iceberg, we can see the problem in the strip cup, but
the subclinical is like the massive ice under the surface -
its problems are hidden from view. The unpact of that
hidden force really does the damage.”
Eberhart explained that research had indicated that in
most herds where there is no mastitis control, 25 percent
of the quarters are subject to infection.
“We’ve found that mastitis costs producers from $75 -
$125. per year for each cow, for culling and holding milk
out along with the production lost.”
The dairy specialist explained the two different
categories mastitis has been broken down into • namely
contagious and environmental sections.
“The contagious category is that which contains the
strep agalactiae and staph aurens infections,” he noted.
“These are passed from cow to cow and quarter to
quarter, usually at milking or by machine and people.”
Eberhart explained that these forms of mastitis can be
contained and controlled but the infections associated
with the environmental causes were “more stubborn.”
“The environmental forms are those such as the
coliforms and other strep infections.”
“The environmental infections are usually those picked
up from bedding, free stall systems and contact with the
environment as opposed to other animals.”
“We haven’t developed many controls for the en
vironmental infections yet,” Eberhart noted, “they are
difficult to control.”
Eberhart commented on the relatively new use of
somatic cell counters to determine the degree of mastitis
present in a herd, along with using the device as a form of
controlling the disease before it spreads.
“The more leucocytes or somatic cells found in the milk
usually indicates infections,” he noted.
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HAROLD J. DIETRICH
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DISTRICT MANAGER FOR:
Francesville, Ind 47946
(Continued from Page 1|
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“Leucocytes are the white cells or defense mechanisms
sent by the cow’s body to the site of infection” - In this case
mastitis. . . . , .. „ ,
The dairy specialist explained that if more than 1
million such somatic cells were found in a milk sample It
could mean up to a 20 percent loss in bulk milk production.
“In Pennsylvania/* he noted, “about 49 percent of the
herds had less than 500,000 cells with 49 percent having
500,000 to 1,000,000 cells, but then 9 percent had over 1
million cells which means a lot of lost milk.” Penn State is
currently experimenting with a somatic cell counter
which was made in Denmark. While its effectiveness is
still being researched, Eberhart noted that it will
probably be quite useful - possibly in the near future.
Controversy on Controls
Speaking on controls effective against mastitis,
Eberhart cautioned, “for contagious mastitis, many
people think that teat dipping and dry cow treatments are
the only cure."
“This isn’t true, while they are effective in some cases,
it is not the end of mastitis.”
“Some producers think that teat dips will cure
mastitis,” Eberhart stated, “but dipping does not cure it,
it is merely a protection for those cows which are not
infected.” W
Cautioning producers against using any type of medical
preparations for dips, Eberhart said, “use only those
which are intended for a teat dip.”
“Don’t use sanitizers or washes for dipping purposes.”
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[Continued on Page 23)
where