Pollution tied to animal
UNIVERSITY PARK -
Veterinary aelentista «l
Slate University have
developed a model system to
study the effect of air
pollutants on an animal's
ability to produce antibodies
needed to resist bacterial
and viral infections.
Dr. Arian Zarkower and
associates have already
found that substances such
NELSON WEAVER & SON
Box 152-R2 Lititz. PA
49% SOYBEAN MEAL
BULK or BAGGED
BtOd 717-63-8538
Headquarters For Tires, Service, & Batteries
RIB
HI-MILER
$2755
6 70 15LT Load Rant* C
(6 Ply Rated)
Tube type blackwall, plus $2 42
fE T, and tire off your vehicle
• Built to take lough uding
m stile goes \ou 'ong
u eating dependable mileage
GRI M I OK Pit Kl K P\NH.,
UN VNDC VVIPLR!
TRACTION
SURE-GRIP
$3? 25
6 70-15 LT Load Range C
(6 Ply Rated)
Tube type blackwall plus $2 76
F E T , and tire off your vehicle
• Deep-bl l l n g Z -shaped
tread keeps \ou going in the
toughest tenain long-we.u
ing In c gnus dependable
mileage
aooofrcAß
ns ozone, sulfur dioxide,
silica dust, and carbon dust
can decrease the ability of
animals to produce an
tibodies Harmful bacteria
can be neutralized by such
antibodies
Carrying out experiments
with mice, the Penn Slate
scientists have observed that
even pure carbon -
previously thought to be
FARMER
DAKS
harmless - is capable of
decreasing the animal's
ability to produce antibodies
Silica dust, a known toxic
component of a number of
rock dusts and coal, had a
much greater effect Silica
was found capable of
reducing antibody formation
by 80 to 90 per cent. Mice in
the experiments did not
recover fully their ability to
produce antibodies when
tested 80 days after removal
from a two week exposure to
silica dust.
The College of Agriculture
researchers are asking the
question, “What effect do
certain pollutants have on
the ability of animals to
resist infection?” The Penn
Staters want to determine
what concentrations and
“TRACTION
TORQUE”
Tough Enough For Single
Or Dual Mounting
FOR SMALL TRACTORS
$Ol 90
m I 11.2 x 24 4-ply rating
■ pluss33lFET and
" tire off your tractor
• Anglc-braied lug design reinforces lugs the way
corrugations leinfou e steel
• Long, slou rate ot near—lapcied lugs ar lua!l\ get
uidcras tln’i ucardoun
• Tough, lemtorred rord body combines lesihence
and strength for buiise lesislanre in the lield
• Hea\\-dut\ nm shield adds iayei of e\tra-tough
rubber to help piolecl \ital Lead aieas
FOR MEDIUM FOR LARGE
TRAC TORS I RAC TORS
5J4840 495.0
12.4 x 38 4-ply rating 15.5 x 38 6-ply rating
plus $5 44 F.E T. and plus $7 72 F E T and
tire off your tractor tire off your tractor
OTHER SIZES CORRESPONDINGLY LOW PRICED
PHILIP LEBZELTER'S & SON CO.
Goodyear Tires at Competitive Prices at the Following Dealers:
Distributed By
health
amounts of exposure time
may affect the Immune
system
The effects of chemicals on
livestock could become
more serious due to In
creased numbers and con
centrations of livestock on
Individual farms or fccdlots,
Dr. Zarkowcr observed He
described the situation in a
recent issue of “Science in
Agriculture,” the quarterly
magazine of the Agricultural
Experiment Station at Penn
State.
In the early stages, the
experiments found changes
in the activity of cells which
help to develop immune
responses. The research has
identified some of the cells
and functions that may be
damaged by the presence of
• Made wide Greater ground
contact lots the tire “float”
on top of the soil
• Made to opes ate effectively
with minimum soil compac
tion vuth a special flotation
design
• Wide lintk and straight rib
Upc design increases
resistance tolateial sway
Lancaster Farming. Saturday, March 13,1976
toxic substances in the air.
Such pollutants, Dr.
Zarkowcr said, can damage
cells which normally
produce antibodies and
create Immunity to disease.
Research elsewhere has
shown that smoke,
automobile exhausts, heavy
metals, and a number of
gases can affect the health
and growth of animals. Some
pollutants are products of
industry. Other pollutants,
such as ammonia, can be by
products of the animal’s own
wastes.
Dr. Zarkowcr said an
increasing amount of at
tention is being given
nationally to creation of
"models" to determine the
possible consequences of
short and long-term
inhalation of potentially
toxic substances.
’2l“
7.50 x 14 4-p(y rating
plus 88$ F.E T.
NO TRADE NEEDED!
5 33. 55
9.5Lx14, G-ply rating
plus $1 23 F.E T.
NO TRADE NEEDED!
Lancaster, Pa
Effects of a variety of
compounds are being studied
as to their ability to damage
tissues, induce cancer,
destroy vegetation, and
produce a variety of other
changes affecting health and
comfort.
nv.^'-y ' f
ui
Some people believe that i
you find your initials in i
spider’s web you will bi
lucky forever’
AKRON
ROY H BUCH INC
Phone 559 2441
BUCK
WENGER IMPLEMENT CO
Phone 284 4141
ELM
SHOTZBERGER’S
FARM MACHINERY
Phone 665 2141
FARMERSVILLE
FARMERSVIILE EQUIP
Phone 354 4271
INTERCOURSE
C B HOOBER & SON
Phone 768 8231
KINZER
LANCASTER EQUIPMENT
CENTER, INC
Phone 442 4186
LANCASTER
L H BRUBAKER INC
Phone 397 5179
LANCASTER FORD TRACTOR INC
Phone 569 7063
LEOLA
M M WEAVER & SON
Phone 656-2321
io^BIUIBAKER
Phone 626 7766
CARMAN’S GARAGE
Phone 626 5706
MANHEIM
SWEIGART TIRE SERVICE
Phone 665-2258
N. C. HERSHEY
& SON, INC.
Phone 665-2271
MARTIN DALE
JARED STAUFFER CO.
Phone 445 6465
MECHANICS GROVE
GRUMELLI FARM SERVICE
Phone 786 3630
MOUNT VILLE
R S HOLLINGER & SON
Phone 285 4538
NEW HOLLAND
A.BC GROFF
Phone 354 4191
ALLEN MATZ, INC
Phone 354 2214
STAUFFER DIESEL
Phone 354 4181
QUARRYVILLE
C E WILEY i SON
Phone 786 2895
WAKEFIELD
C E WILEY & SON
Phone 548-2110
65
V!