Top Protein Cows,
(Continued from Pagt C 6)
DURHOOD FASH 2700 lEHMUC RQU) OXFORD 3
SOLID GOLD HOLSTKNS R D 1 800101 63
DAVIDfCHRIS DILLUHS 13 SHATARA ROAD LEBANON G 3
JA! H GOOD RT 6 BOX 880 LEBANON B 3
VALLEYS EH) FARM R D BOX 118 REBERSBQRG 13
MELHOOD FARM RD 3 370 FAG6S MANOR OOCBRARVILLE 3
FRANK MILLER JR RD 2 BOX 2255 BANGOR B 3
JAKES D DONN R D 1 BOX 160 M NED RINGGOLD B 3
JOSEPH S STAYDDHAR 109 K HICODEMDS ST NARTDiSBURG B 3
JAN JURBALA R D 1 BOX 52 ORANGEVILLE B 3
PLUM LINE HQLSTEINS R 0 5 TITUSVILLE B 3
HILLTQPBEAVO R D 6 BOX 238 XIRANHING B 3
BRADND VALLEY FARMS RD 3 ROY 3
J GORDON BITE 203 CREST RD LEBANON B 3
RN D SHULTZ FARMS RD 5 BOX 342 DANVILLE B 3
STEPHEN J MSLLOIT 6758 RENRINGER RD MERCERSBQRG B 3
RON + LORI HEMBQRY RD 4 BOX 104 MUNCY 3
GLEN ( ARLENLANDIS RDI TROY 3
IRDtCA FARM R D REBERSBORG 3
THOMAS N KELLY R D 1 BOX 376 TYRONE 3
CURTIS + ANN DAY 815 MOD LEVEL RD SHIPPERSBORG 3
FRED 6 TON STROOSE RD 2 NORTHUMBERLAND 3
FAIR VIEW DAIRY R D 2 BOX 354 DAYTON B 3
RUSSELL MAPLE FARMS R D 1 BOX 123 800 3
THCNAS+SHIRILY KRALL R D 7 BOX 650 LEBANON B 3
RICHARD H SNITH6SONS 4906 OID CARRIAGE RD NORTHAMPTON 3
EMERY-RICK DAVIS R D 2 BOX 67 NIDOLEBURY CENTER B 3
MATT HILL BAH BHUGINRY DAVIS R 2 TROY 3
STONE HART FARM 1749 XERCERBDRG ST THOMAS 63
ARNOID ACRES R D 2 LEBANON 3
JANES RODICHOK 200 HICONISCO AVE TONER CITY 3
RICHARD R HIGLEY RDI BOX 1287 FORKSVIILE 3
RODRICKITRUDY HINISH R D 2 BOX 245 WILLIAMSBURG 63
RICHARD KRIEBEL R D 2 BENTON B 3
R D 1 BOX 2-A-l
BRIAN SDCH
R D 1
LnWHOLF
HISTORY REPEATS
ITSELF
Dr. Regina Yasilatos-Younken
Associate Professor
Dept Of
Poultry Science
In 1983, an outbreak of a mild
form of avian influenza began in
the U.S. and was allowed to spread
While They Last!
This Unusual Truck Has A Different Scene On Each Side!
VVIMiOSS
Wml MmchMtor Mill
Rt. SO York, PA
(Nut to McDoniMi)
Mon.-Sot. 10-9;
Sun. 12-5
freely. Within six months, the vir
us had mutated to a highly virulent
form that claimed more than 17
million birds, with costs in the tens
of millions of dollars before it was
ultimately eradicated by an aggres
sive program of quarantine and
depopulation.
Now, the same scenario appears
to be repeating itself just south of
Limited Edition . . . Only 600 Made!
Southern hours? s-s
Mon. e-7; tubs, s-sso
TURF & TRACTOR, INC. 717-235*9400
1-800-738-1741
Pennsylvania DHIA For March
the U.S. border in Mexico, where
more than 25 million birds in three
Mexican states are already
infected.
Because initially when the virus
surfaced last spring, infected birds
contained only a mild strain of the
virus confined to the lungs and
gastrointestinal tract (GIT), Mexi
can officials were reluctant to take
the “extreme measures” that were
ultimately necessary in the U.S.
But, as happened here, the critical
mutations in the viral protein
necessary to transform it into a
highly virulent form occurred by
the start of this year.
In order for the virus to infect
cells throughout the body, its
hemagglutinin (HA) protein must
be altered in such a way that it con-
250 N. NUn St.
SCOTT BOUSES B D 1 BOX 71
GRIFFIEU) PARKS R D 2 BOX 10
bide knoll runs 4300 lenisberry bd
MEADOR CBM FABM RD 4 BOX 182 A
GEABY E SHADE I SONS R D BOX 449
HARRY R MASKER R D 1
IRVIN Z BRUBAKER 102 CREST ROAD
BORZO ORE-O-ORE BOX 11 RDRTZ RD
CARL A FARMS INC R D 1 BOX 106
SMYSEBS BICHLANN PMS 2691 EAST BERLIN RD
PLEASANT VIER FARM RD 2 BOX 160
BOSCH FARMS R.D. 7 BOX 170
JOHN i ROBERT GRAHAM R D 1 BOX 324
TROTACRE FARMS R D 1 BOX 95A
VALLEY RIDE FARM R D 2
COVE VIER FABM
BRORNCROFT FABM R D 2 BOX 430
MAYPORT HILLS HOLST R D 1 BOX 235
PAOLA DELL HOLSTEINS 111 S NAYSVILLE RD
DARREHUARYN PEACHEY HCR6I BOX 26-D
BRUCE R HEILIMGER RD2 80X344
CHRISS+TRISH NIPPLE R D 1 BOX 214 N
ROODS DAIRY RATER ST EXT
6EORGE6DAVE BAMICXY R D 2 BOX 230
CARL Z GOOD 27 MEL RD
OAIR i PAT TBHDSH RD 1 BOX 59A
GLEN + TRACEY HENRY R R 2 BOX 1325
RONALD P DAVIS STAR ROUTE
DAVID6SHARON BISHOP 4818 (MY HILL RD
DARE E LARD R D 1 BOX 116
DAVID NANCY BISHOP RD 2 BOX 168
RICK HARSHNAN 5497 HESS BENEDICT
JESSE L SPICHER R D 2 BOX 470
LUKE MAKER 81 KREIDER RD
JOHN + SHARON KLINE 610 S RAMONA RD
JAY HODSER R D 2
DALE I KING RD 2 BOX 427
tains a series of basic amino acids.
Once this type of mutation occurs,
the protein is activated by enzymes
throughout the bird. In mild strains
of the virus, cleavage of the protein
is limited to the lungs and GIT,
where the necessary enzymes are
produced. In the more virulent
mutated form, the protein can be
cleaved by an enzyme that occurs
throughout the body, resulting in
systemic infections with internal
hemorrhaging and collapse of the
Qpntral nervous system, as the
brain becomes involved. In this
form, mortality can range from 20
to 100 percent.
Because of the severe economic
situation in Mexico, depopulation
is deferred to containment and vac
cination. But with limited supplies
of vaccine, a widespread program
Base Replant Decisions On
Careful Stand Evaluation
GOLDEN VALLEY, Min.-
Conditions such as a late frost,
hail, insect damage, or seedbed
problems occasionally reduce
stands, creating possible replant
situations.
Because initial field appear
ances may not correspond to an
equal yield loss, Mark Mattingly,
Northrup King Co. agronomist for
the Northeast, advises growers to
evaluate the facts before deciding
to replant a field.
Com plants can and often will
outgrow leaf damage,-especially
when the growing point is pro
tected beneath the soil surface,
Mattingly said. If new leaf growth
appears within a few days after the
injury, the plant is likely to sur
vive and produce normal yields.
Before replanting a field, grow
ers should consider the calendar
date and the current level of stand
reduction. The later the date, the
higher the stand loss must be to
Lancaster Farming, Saturday, April 29, 1995-G7
NEN BETHLEHEM
MARION CENTER
YORK
BEDFORD
ALEXANDRIA
LIGOMIER
LEBANON
ROCHESTER
PITMAN
YORK
MARION CENTER
MfflCY
BOLIVAR
ERON VALLEY
SPRING MILLS
CDRRYVILLE
ROHE
MAYPORT
GREENVILLE
BELLEVILLE
NENHANSTOHN
MT PLEASANT MILLS 3
EDINBORO B 3
TOMPSON 3
MYERSTONN G 3
ULSTER 3
PORT ROYAL 3
MARREM CENTER 3
DOYLESTONN 3
NT PLEASANT MILLS 63 21.9
NILLIAMSBURG G 3 45.2
NAYMESBQRO B 3 31.8
BELLEVILLE 3 36.6
MYERSTONN B 3 81.4
MYERSTONN 3 69.8
SPRING MILLS 3 74.6
BELLEVILLE 3 55.6
42.6
109.3
is impossible, with grandparent
and breeder stocks receiving pre
cedent over layers and broilers. By
establishing strict control over
traffic into and out of both infected
areas and remote regions where
breeder operations are maintained,
the Mexican government Tropes to
preserve a source for repopulating
the industry.
With the coming of spring, the
movement of migratory waterfowl
from South and Central America
northward raises concerns, as
some species are known to harbor
the mild form of avian flu. With
the lessons learned here over a
decade ago, and their reinforce
ment through similar events in
Mexico this year, experience is
clearly on the side of the U.S. poul
try industry.
make replanting an economical
option. Growers should also eva
luate stand uniformity. Large gaps
in plant stands reduce yields more
than if the plants are spaced
evenly.
The Northrup King agronomist
emphasizes that yield gains from
replanting must offset the extra
costs of tillage, seed, and labor.
Herbicides and insecticides may
also need to be reapplied, adding
additional expenses. In addition,
replanting may delay planting
other com or soybean acres, jeo
pardizing their yield potential as
well.
By following university and
indi ?lry related guidelines, Mat
tingly said growers can make the
best economic choice for their
operation. For additional advice
on evaluating potential replant
situations, growers can contact a
local Northrup King agronomist
by calling (800) AGVISOR.