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Pot
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Penn State
Poultry T Y
Pointers ;
BROILER
BREEDER
MANAGEMENT
H. S. Siegel, Professor
Poultry Science
The best economic returns from
broiler breeder hens is accom
plished by maximizing the number
of vigorous chicks hatched per hen
in each production cycle.
To accomplish this objective, it
is desirable to bring birds into sex
ual maturity at as early an age as
SPREAD THE WORD!
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a blend of results from coast to coast, north to south. ..—^
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hatchable eggs can be produced.
However, the beginning of pro
duction by broiler pullets depends
upon them reaching a certain
threshold body weight at a specific
age, 'which, in turn, depend on
lighting schedules during the rear
ing period and on feed manage
ment Therefore, controlling light
ing and feeding schedules for pul
lets before they begin to lay is
important.
Idris and Robbins (Poultry Sci
ence 73:603, 1994) conducted four
experiments that provide informa
Pfliripment Employees
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tion on the optimum age for broiler
breeders to begin egg production
and the management methods
needed to attainsexual maturity at
this age. Their results indicate that
egg production by commercial
boiler breeders will be optimum
when they begin to lay'at 24 weeks
of age. But management methods
to achieve this target age will differ
according to whether the pullets
are reared, up to 18 weeks of age,
in conventional (natural day
length) or in “short-day” (8 hour)
rearing systems. The latter
requires “black-out” housing.
The experiments showed that
pullets reared under a short-day
system will begin to lay at 24
weeks if light stimulation is ini
tiated at 18 weeks and feed stimu
lation is initiated not later than 24
weeks of age. Pre-lay feed stimula
tion consisted of abruptly chang
ing from restricted every-other
day feeding of a grower diet to a
daily allowance of 0.4 Ib/hen/day
of a breeder diet (12S0kcal/pound;
17 percent crude protein). For pul
lets reared in housing with natural
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SYCAMORE IND. PARK
255 PLANE TREE DRIVE
LANCASTER. PA 17603
(717) 393-5807
daylength to commence laying at
24 weeks of age, feed stimulation
should be initiated at 24 weeks and
photostimulation begun at 18
weeks of age.
The results show that for pullets
reared in natural daylength, feed
stimulation is the key factor,
Gypsy
Meeting Scheduled
NORTH CORNWALL (Leb
anon Co.) —The Lebanon County
Conservation District and the De
partment of Environmental Re
sources, Bureau of Forestry, will
be conducting a public forum re
garding the infestation of gypsy
moths in Lebanon County and re
quirements for participation in the
state control program.
Those landowners residing or
renting in gypsy moth infested
areas are urged to attend the public
meeting scheduled for Monday,
Route 30 West
at the
Centerville Exit
UncMttf Farming, Saturday, July 30,1994-C3
whereas for pullets reared in short
light situations, photostimuladon
is the key factor.
For more information, contact
Dr. Kelly R. Robbins, Department
of Animal Science, University of
Tennessee, Knoxville, TN
37901-1071.
Moth
August 1, at 7 p.m. at the Lebanon
Valley Agricultural Center, 2120
Cornwall Road.
Those with a disability wishing
to attend the meeting and who re
quire an auxiliary aid, service, or
other accommodation to partici
pate in the proceedings, should
contact Julie Carman or Leigh
Bcamesdcrfer directly, at
272-3377 to discuss how those
needs may be accommodated.
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Answering Service 215-593-2242
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Ph: 717-345-3724
Fax: 717-345-2294
STOLTZFUS WELDING SHOP
Owner - Samuel P. Stoltzfus
RD 3, Box 331
Pine Grove, PA 17963
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