COLUMBIA, Mo. - Talk about
feed additives for pigs, and you’re
likely to strike a nerve.
You get comments like “too
costly,” “not very effective,”
“could work their way through the
food cham and be harmful to
humans.”
The truth, though, is that the
jury is still out on all of the above.
Swine producers have been using
feed additives for 20 or more years.
The research that allowed them to
get on the market in the first place
is often at least that old.
“That’s why the FDA (Food and
Drug Administration) and HEW
(Health, Education and Welfare)
are interested in collecting current
data on feed additives, especially
antibiotics,” said Trygve Veum,
University of Missouri-Columbia
swme researcher.
“We know that feed additives
are still effective, economical and
safe to use for young, growing pigs.
But, Veum said, the FDA and
HEW are interested in collecting
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additional information on the
relationship of antibiotics to
human health.
Consumer advocates are con
cerned that there could be an
tibiotic residue if proper with
drawal from the swme ration is not
followed, said Veum. Current
recommendations call for
producers to withdraw some an
tibiotics from swme rations at
least two weeks before the animals
are slaughtered.
If the residue was carried
through the food cham to humans
who consume the pork, these
people could become highly sen
sitive to the specific antibiotic m
the additive. That sensitivity
would be a problem when the
person is later prescribed that
antibiotic by a medical doctor.
Another concern is that bacteria
resistent to these antibiotics might
be passed on to pork consumers.
“Antibiotics have been on the
market for many years,” said
Veum, “and it appears that none of
these problems have ever oc
curred ”
Still, he and other researchers
must maintain a scientific
vigilance over feed additives to
protect jxirk producers and con
sumers.
Best evidence of this vigilance is
a North Central Regional Project
to test the additive chlor
tetracyclme.
“HEW wants new data to sub
stantiate the use of this additive m
swme rations,” said Veum.
“As part of the test, they’ll tie up
two Missouri swme operations for
two years in controlled ex
periments.” i i
In other research trials, Veum
and George Siwecki, UMC animal
scientist, are looking at the
biochemical action of the additive
carbadox. The additive is designed
to increase swine growth and feed
efficiency in pigs weighing up to 75-
80 pounds.
“We know the additive increases
growth by increasing muscle, but
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we’re not sure how it does it,”
Veum said.
“We want to see if the additives
improve energy utilization in low
energy diets. So far, results show
that we get a slight improvement
USDA clarifies grain regs
WASHINGTON, DC. - The U.S.
Department of Agriculture has
clarified its regulations dealmg
with the designation of official
agencies to inspect and
grain.
Kenneth A. Gilles, administrator
of USDA’s Federal Grain In
spection Service, said the action
spells out procedures to be
followed when the designation of
an official agency ends and the
agency asks to be redesignated.
Under the U.S. Grain Standards
Act, the grain inspection agency
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m growth regardless of the diet,”
Veumsaid.
With all of these experiments,
Veum said, “the:.bottom line is to
determine how they work so far
mers can produce lower cost, lean,
nutritious pork for consumers.”
may designate official agencies to
perform inspection and weighing
services where needed.
Written comments, in two
copies, should be submitted no
later than September 25 to Lewis
Lebakken, Jr., Director, Issuance
and Coordination Staff, Room 1127,
Auditors Building, 1400 In
dependence Ave., S.W., Federal
Grain Inspection Service, U.S.
'Department of Agriculture, Wash.,
D.C. 20250.
For more information, contact
Lewis Lebakken, Jr., at 202/447-
3910.
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