B6—Lancaster Farming, Saturday, June 14,1980
Adams farmers
(Continued from Page B 5)
A veterinarian attending
the meeting pointed out that
when giving a laxative, a
farmer should not use a
saline laxative because it
will draw more water out of
the animal. Instead, he
recommended an oil
laxative be used.
Herberley emphasized
anaplasmosis’ cost to the
cattle industry is too high to
be ignored.
“A dairy cow infected with
the disease loses 30 percent
of her milk production and 25
percent of her milkfat
production in one lactation.
If she recovers from the
disease and stays in the
herd, she will be culled one
year earlier than her
stablemates and will
produce 7 percent less milk
in her career than those
cattle that never contracted
the disease.”
It was also pointed out that
any dairy cow treated for
long periods of time with the
drug tetracycline will soon
be considered a beef animal
by the dairy farmer because
her milk cannot be
marketed.
Not only does the disease
affect the milk production of
the cow, it can also affect
reproduction.
According to Fort Dodge,
the microorganism that
causes the disease can cross
the placenta of the pregnant
cow and infect her unborn
calf. It can cause abortions,
and can also reduce a bull’s
interest in breeding cows,
resulting in his temporary
infertility.
In 1965, a vaccine to
combat die disease was
developed by Oklahoma
State University through
research funds provided by
the National Cattlemen’s
Association. The university
also developed a reliable test
to identify earner cows.
Fort Dodge Laboratones
recommends administering
this vaccine when cows are
open to avoid calf deaths
from NI, neonatal
V 5
/• /sS,
Sss , Ss
isoerythrolysis.
Herberley explained NI is
similar to the Rh factor in
humans. “A mother
produces antibodies against
her calf’s blood, transmitted
through the colostrum in the
milk. These antibodies result
in the calf’s death.”
The vaccme program will
require about four doses per
cow in her lifetime, said
Herberley. This would in
volve the initial treatments,
followed by a booster shot
the following year, and a
booster every other year
thereafter.
He pointed out he did not
recommend vaccinating
calves because he said he
feels it is a waste of money.
According to William
High, a field veterinarian for
the Pennsylvania Depart
ment of Agriculture, young
animals, up to a year old,
generally don’t have a
problem getting over
anaplasmosis.
Cattle between the ages of
one and two, he added, seem
to tolerate the disease better
than older animals, where
anaplasmosis results m high
mortality rates.
The PDA vet told the
group that the state first
identified anaplasmosis in
an Adams Co. dairy herd
owned by James Angelaras.
“The attending
veterinarian sent two car
casses to our lab for post
mortem exams. We found
the post mortems to be
suspicious so we ran blood
tests which showed a
positive identification of
anaplasma margmale.” g
After these positive cases
were discovered, PDA
checked herds within a 3
mile radius of the infected
Angelaras herd. High ex
plained that PDA contacted
the owners and sampled the
herds at the owner’s request.
“We sampled 12 herds and
tested 568 animals. Out of
those tested, there were 54
positives and 13 suspicious.
“We also tested every fifth
sample sent in for
brucellosis tests by Adams
County fanners—unknown
to the farmers or their
veterinarians. This involved
37 owners and 357 animals.
The results came back 0
suspicious and 0 positive.
“We ran anaplasmosis
tests on all of the Adams
County owners who applied
for health charts. Of these 11
owners, we ran tests on 43
animals, all with negative
results.”
The PDA vet said they
have identified
anaplasmosis only in one
other herd outside of Adams
County. This herd is in
Westmoreland County.
“Our testing shows that
the disease is not rampant in
Adams County, but it is the
state’s hot spot,” High said.
He explained the PDA
policy does not require
quarantining infected herds,
and PDA does not pay in
demnity for lost animals.
High said infected animals
can be sold withm Penn
sylvania, but only if the
buyer has prior knowledge of
the cow’s anaplasmosis
problem. He noted that the
state’s health certificate
does not mention
anaplasmosis, just tuber
culosis and brucellosis, so it
is up to the seller to inform
the buyer.
Interstate sales of infected
animals require the prior
approval of the state’s
veterinarian where the
animals will be shipped.
“Canada and Wisconsin
require a negative
anaplasmosis report, and
many other states have
similar policies,” High
added
For any Adams County
farmer who wants to have a
herd tested for
anaplasmosis. High told the
group PDA will do the
testing free of charge. The
normal charge is $1 per
head.
He also pointed out that
the PDA lab only runs
anaplasmosis tests on
Thursdays. Samples should
be taken so that they arrive
right before the testing day.
The test results are mailed
out Friday, he said, but
farmers ‘in a rush’ can call
in for their results.
If a farmer is retesting an
animal that had been postive
and was treated with
tetracycline, High recom
mended waiting 120 days
before sending in a new
sample.
If the retest results come
back negative, the animal is
considered negative for
anaplasmosis, said High,
and can be sold without any
special provisions. But, he
pomted out, this animal is
once again susceptible to the
disease.
Concerning vaccinations,
High said, “The state is not
too keen on using the vac
cine. Once a cow is vac
cinated, she tests positive for
anaplasmosis—if you want
to ship her to a state that
requires a negative
anaplasmosis report, you
might have trouble. We also
don’t know how long the
vaccine gives an immunity
for the disease.”
The concerned farmers
did hear some encouraging
information on a new and
improved treatment for
anaplasmosis.
Herberley told the 1 group
there is research now un
derway to develop a drug
called tetracycline L 200
which is four-tunes stronger
than the tetracycline
available on the market
today.
“With the new drug, you’ll
be able to give V* the normal
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mean less pain for the
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