RAHWAY, NJ - These cattle
are often described as “poor
doers” because they just don’t gain
weight even though they look
bright and alert and have a good
appetite
“Poor doers” cost producers'
money in poor weight gams and
reduced feed efficiency, but do you
know why they do so poorly’
Dr. Tim Jordan, a feedlot
vetennanan/consultant in
Canyon, TX, attributes “poor
doer” syndrome to Ostertagia
ostertagi, more commonly known
as the brown stomach worm.
“We see a couple of different
conditions caused by Ostertagia in
the feed yard,” he says. “The ‘poor
doer’ condition is probably the
more common of the two. We see it
in cattle that have been on feed for
30 to 60 days.
“This condition is not easily
diagnosed,” he says, “because the
infected cattle do not have worm
eggs in the feces. Other than a few
cattle having bottlejaw, they do not
exhibit the symptoms usually
associated with a heavy worm
burden. When we do a serum
analysis, we find high levels of
pepsinogen.”
A high level of pepsinogen
usually indicates the presence of
the fourth larval stage of Oster
tagia. These immature worms are
dormant in the glands of the
abomasum, where their presence
interfere with the glands that
produce hydrochloric acid
necessary to convert pepsinogen
2 more
of milk
10'
cra<
Feed the whole
ear with Bearcat
24RC roller mill.
Now you can cut cobs and
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Six rugged, 20" knives and two
cutterbars pre-cut the feed, which
then passes through a sizing
IUKASTEN - See Your Local Dealer
Kasten Mfg. Corp.. Allenton. W 153002 (414)629-5511
ICKES FARM SUPPLY
Osterburg, PA
814-276-3422
STRALEYFARM
SUPPLY
Dover, PA
717-292-2631 or
717-292-4443
into the digestive enzyme pepsin.
This reduces the animal’s ability to
properly digest feed and con
sequently its ability to utilize feed
tor bodily maintenance or weight
gain.
“The second type of Oster
tagiasis we see is in calves that
come to Texas in the spring or fall
from the Southeast or Midwest,”
Jordan says. “The calves just
abruptly die. They’ll have clinical
signs that lead us to believe they
have respiratory problems, but
they do not respond to treatment
for this. When we perform a
necropsy, we find Ostertagia and
the damage done in the
abomasum.”
Jordan says the incidence of
these conditions is very sporadic.
“We see it occasionally throughout
the year and in only one or two
pens in a yard. In those pens, one to
10 percent of the animals may have
the condition. We have found
Ostertagiasis at varying degrees in
all the yards for which we consult;
in about 100 individual cattle.”
Ostertagiasis is not confined to
Texas. During post mortem
examinations of cattle that died
from Leptospirosis, Dr. David
Hahn, Canton, Illinois, found
dormat larvae in the abomasum.
Like those in Texas, the Illinois
cattle did not exhibit symptoms
normally associated with Oster
tagiasis-watery diarrhea being
the most common.
“We don’t diagnose Oster
tagiasis in this area a lot,” Hahn
tons
GRUMELLI’S
FARM SERVICE
Quarryville, PA
717-786-7318
SHUEY SALES
& SERVICE
Ono, PA
717-865-4915
‘Poor doers 9 may have parasites
screen with 3 M" holes. Big 10"
rollers crack and granulate the
com into high-quality feed.
Clearance of 3 A" between blades
and screen means easy running
for fuel efficiency.
A smooth, hydraulic auger
feeder keeps the corn moving.
With a 70 hp tractor, you can pro
duce up to 600 bushels per hour.
Start getting more nutrients per
acre now—with a Bearcat 24RC
roller mill. Talk to your Kasten dealer.
POWER PRO
EQUIP. CO.
Milroy, PA
717-677-6504
New Holland. PA
717-354-4241
says. “But if the cattle we posted
had the problem, we could also
expect others to be infected with
the worms, since all the cattle
came from the Southeast.”
Regardless of where it is found,
Ostertagiasis is a costly problem in
the feedlot and often goes un
noticed. Jordan says, “we don’t
recognize the problem is there. We
just think these animals are “poor
doers” so we cull them.”
“Until recently,” he continues,
“we didn’t have what we would
call a cost effective treatment
which would get the animals to
respond.”
With the introduction of ‘lvomec’
R (ivermectin), Jordan feels he has
a cost-effective drug if used at the
proper time. ‘lvomec,’ the new
parasiticide from MSD AGVET, is
the only drug available which
controls both the adult and the
larval stages of Ostertagia at the
recommended dose. ‘lvomec’ also
controls other internal parasites
such as stomach worms and
lungworms, as well as many ex
ternal parasites such as grubs,
mites and lice.
The animals Jordan has treated
with ‘lvomec’ have responded
favorably, but he does not feel it is
profitable to keep animals that
have already been on feed for 30 to
60 days. 'There is some healing of
the abomasum,” he says, “but
there is not enough compensatory
gain to justify keeping them. They
will not be ready to market for
another 60 days. Every extra day
knives
provided
drive
ERNEST SHOVER
FARM EQUIP.
Carlisle, PA
717-249-2239
THE WARNER CO.
'TiryMtlM Ftmir"
Troy, PA
717-297-2141
Lancaster Farming Saturday, November 2,1985-09 1
in the yard decreases your profit. ’ ’
Rather than waiting for
problems to develop and treating
at this late stage, Jordan
recommends treating all cattle
which have the potential to develop
Ostertagiasis with ‘lvomec’ when
they arrive at the feed yard.
w orm;ng "ther anthelmintics
Vermeer adds
PELLA, lA. - A giant round hay
baler that automatically
distributes hay evenly across the
full width of the bale is now being
offered by Vermeer Manufac
turing Co.
The new Vermeer 605 J Baler
utilizes a computerized monitoring
system (VCS System III) that
receives sensory data as the bale is
being formed and then signals the
weave pattern of the baler, the
automatic twine tie, “near full”
and “full bale” indicator lights and
the automatic gate close indicator.
As a result, a tractor operator can
drive the entire length of a hay
field straddling the win
drows...without weaving the
tractor and without worrying
about hay formation, size of bale,
start up, unloading, closing the
gate or clearing the bale.
“Essentially, what we have
designed is a baler that thinks,”
according to Lyle Borg, Vermeer
vice-president in charge of
marketing. “We’ve taken the
worry and guesswork out of baling
and replaced it with a system
that’s designed to produce per
fectly-formed solid, round bales
everytime.”
The Vermeer 605 J features a
iSuperhopper
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M.H. EBY, INC.
P.O. Box 127 Blue Ball, PA 17506
(717) 354 4971
will control the adult stage of
Ostertagia, but will not affect the
dormant larval stage.
“Cattle which have the potential
to develop Ostertagiasis are those
from the Southeast that arrive in
Texas in late-summer and early
fall,” Jordan says.
new hay baler
positive drive chain-type kicker
that rolls out the package of hay
eliminating the need to back up the
baler to drop a bale. Air cylinders
on both sides of the unit offer an
infinite range of pressure settings
ensuring uniform density
throughout the entire bale. The
unit also comes equipped with
Waltershield PTO, 4-ball twine
box, rubber-mounted pickup tines,
an instant-start feed opening and
6M>” wide/2-ply belts that twist to
eliminate build up on the ends.
The 5,075 lb. machine is built
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formed steel channel, 3560 lb. rated
axles, and 6-bolt-hubs/spindles. A
#BO roller chain runs the
mechanical drive; W sealed,
radial ball bearings are built into
all drive and idler rollers, the
bottom drum, the starter roller
and pick up pivot (IV4” on the
pickup spider). A rugged lower
drive knife handles all types of
crops, including soybean residue
or corn stalks.
The 605 J is capable of producing
a bale that weighs up to 2200 lbs.*,
measuring 6 ft. wide, 5 ft. in
diameter.
READ
LANCASTER FARMING
FOR COMPLETE
AND UP-TO-DATE
MARKET REPORTS
BUY A 1986
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