D24—Lancaster Farming, Saturday, November 21,1981
NEWARK, Dela. - The sun can
provide up to 428 BTU’s of energy
per hour per square foot. That’s
equal to the heat generated by 10
four-pound broiler chickens
During the hottest part of a
sunny summer day, the solar
energy striking a poultry house is
potentially greater than what’s
produced by the birds inside. This
solar energy adds to the interior
temperature and greatly increases
the chance for mortality.
The chicken’s respiratory
system doesn’t allow it to
evaporate enough moisture to stay
cool in extreme heat With in
creased air temperatures, body
heat loss through its feathers
decreases. The body temperature
of a four to eight week old broiler
chick is about 117 degrees. If the
air temperature inside the house
goes from 70 to 95 degrees, his
potential to dissipate this heat is
cut in half
The air outside may be 90
degrees. Inside, the heat given off
by a flock plus the heat flow from
solar energy hitting the building
may boost the temperature to 95
degrees especially if there isn’t
enough ventilation If this happens,
you’ve got problems.
How you orient a poultry house
in relation to the sun can minimize
the amount of sunlight striking the
structure and help prevent such
dangerous summer heat levels,
says University of Delaware
agricultural engineer Norman E
Collifls.
If a house is oriented with its
long axis east-west, most of the
sun’s rays will hit the south-facing
TRUCKLOAD
SALE
New Shipment
Just Arrived
SAVE
*3O- $ 60
Includes All
Models
.-/i
BOWMANS
STOVE
SHOP INC.
Follow Signs from
Light at Hmkletown
on Rt 322
717-733-4973
R D 3 Napierville
Rd , Ephrata, Pa
Tues , Wed , Sat 9-5
Thurs, Fn 9-9
Closed Monday
Financing Available
The sun effects broiler house comfort
section of the roof. If it’s oriented
north-south, as the sun rises and
sets its rays will hit much more of
the structure and the building
materials will absorb much more
energy.
With an east-west orientation,
the sun’s impact in the summer on
the side walls of the house can be
minimized by building a roof with
an overhang. The overhang shades
the wail, allowing its temperature
to remain relatively low or close to
air temperature.
During the winter, the same or
ientation permits a fair amount of
desirable solar energy to strike the
building’s long south wall. This is
because the sun’s angle above the
horizon is much smaller than in the
summertime As a result, the
overhang provides less shade and
thus permits warming of the wall.
The actual amount of energy
absorbed by a broiler house wall
depends on the reflectivity of the
materials used, says Collins A
highly reflective surface absorbs
much less than a dull one. But no
matter how reflective they are, all
materials absorb a certain amount
of heat as their surface warms up.
As surface temperatures con
tinue to rise, some of this absorbed
energy returns to the atmosphere
Some goes inside the building For
this reason, insulation used to save
fuel in the winter also helps reduce
the heat gam inside a poultry house
in the summer. “This is especially
true of the peak gain experienced
in mid-aftemoon on a bright, hot
day,” says the engineer. “The
more insulation you have, the later
that peak will occur and the lower
SAVE:
ENERGY! TIME! MONEY!
Part Of YOUR Program This Fall:
TWO Jobs In ONE Operation
★ Efficient Glenco Chisel Plowing
★ Nitrogen Application with Clod-flow Ammonia
Custom Applied By The PROS
★ Leaves You Free For Other Work.
★ Allows You To Farm More Acres With No More
Expensive Equipment Investment.
★ Equipped To Apply N-Serv.
Alfalfa - Topdress again after last cutting.
Available K aids in overwintering.
Alfalfa - The BEST time for alfalfa weed control.
Let our sales people book your alfalfa weed
spraying NOW! -
Limestone - truck spread
Let us take your SOIL SAMPLE
TRY US • We Have The Product and The Knowledge
AUTHORIZED DEALERS FOR ASGROW
CORN AND SOYBEANS
ORGANIC PUNT POOD CO.
Jx
f BULK BLENDS ]
fmmumimmm
A I anhydrous ammonia J
it will be.” This reduces the danger
of heat stress on the flock inside
From the standpoint of solar
energy, there’s another argument
in favor of placing a broiler house
' along an east-west axis. With the
rapid rise in fuel costs, there’s
growing interest in using solar
energy as a heat source for winter
1982
BOZEMAN, Mt
American Simmental Association
announces the publication and
release ot its 1982 National bun
mental Sire Summary. ASA
Executive Vice President, Earl B.
Peterson commented, “the new
edition contains a wealth of in
formation for the performance
minded cattleman...whether he'be
a commercial or registered
breeder.”
“The format for the 1982 Sire
Summary is consistent with the
changes initiated a year ago”,
Peterson explained. “A few
refinements have been made, but
member response indicated that
the current format is popular and
functional ’’
A key factor of the ASA per
formance program is free
calculations of records to mem
bers or non-members alike when
either the sire or dam is a
registered Simmental.
“One of the easiest ways for a
commercial producer to get these
free performance calculations is to
use a registered Simmental bull
and submit the records to ASA.
This is a service available whether
the bull is a half blood or
2313 NORMAN ROAD,
LANCASTER, PA
PHONE: 717-397-5152
Hours Monday thru Friday 7 to 4 ,
Saturday 7 30 12 00
brooding systems.
Though the idea is still in the
developmental stages, Collins says
it does have future potential. He’s
presently working on a federally
funded project at the Delaware
Agricultural Experiment Station
aimed at developing a low-cost
solar collector which can be used
Simmental Sire Summary
purebred,” Peterson continued.
In 1971, the American Simmental
Association published the first
breed-wide Sire Summary in the
beef industry. By way of com
parison, the initial Summary listed
13 purebred sires and 6,778 animals
from 301 management units. The
1982 issue evaluates 3,458 purebred
sires and 458,684 animals from
44,003 management groups
Progeny records are gathered
through the comprehensive per
formance record-keeping system
available to all ASA members
Breed wide comparisons of sires
are tabulated on 14 traits.
Breeders can thus evaluate the
potential usefulness of a great
number of purebred bulls in their
own herds.
Dick Tetherow, trustee from
Valentine, Nebraska, who is
chairman of the Performance
Committee, offered these com-
TT,oT 'to “I am H'Tikfu’ the
The
MSP
* LANCASTER FARMING
FOR COMPLETE
AND UP-TO-DATE
MARKET REPORTS,
The only thing
we didn't put into our
s New Super Z Milk Cooler
was the milk..
Let Zero Show You A New Concept
In Cooling Milk;
Z
CONTACT YOUR LOCAL ZERO DEALER:
Regional Sales
Manager
Ray Kuhns
67 Roland Ave
Chambersburg, PA 17201
717-264 3814
Distributors
PENNSYLVANIA
W & J Dairy Sales Laurel Run Farm
n y *L Q? nstruction 717-529 2569 G/antsville
301-895-5567
Chambersburg
717 369 4861
Roop & Sons
#llM u,* .** Hockenbury Electric Lmwood
®°" a ' d Ever,tt Rmgoes 301-775-2127
Mittlmtown 201-782-5950
717-436-2561
to provide heat in the winter during
the early stages of broiler growout.
Once the concept becomes
economically feasible, a poultry
house positioned along an east
west axis will be ideally located for
conversion to a solar energy
brooding system.
foresight of previous Performance
Committees. They established the
mechanics for recording per
formance data on any registered
herd...and thus, we have a solid
base from which to move ahead.
“We can make accurate
predictions about the potential
performance of progency, using
the estimated ' breeding value
concept as illustrated in the 1982
Sire Summary”, Tetherow added.
The Sire Summary includes a
listing of 75 Genetic Trait Leaders;
identifies 188 reference sires; and
carries a trait correlation table as
well as other material.
The Sire Summary is mailed free
of charge to all active ASA
members. Non-members may
obtain copies by mailing a (5 check
for each copy requested to the
American Simmental Association,
One Simmental Way, Bozeman,
MT 59715.
- i
sCI n
-r r-*
Zero Manufacturing Company
Missouri 63090'
J U.S.A.
f TEL. (314) 239-6721
Telex 44-2476 -£S5r%
Marvin I. Horst
Lebanon
717-272-6871
Simpson’s Cooling
'Service
New Oxford
717 624-8568
NEW JERSEY
<.7*
s
/ N
DELAWARE
Hiott Refrigeration
Wyoming
302-697 3050
MARYLAND