C34—Lancaster Farming, Saturday, February 7,1981
Swine producers
(Continued from Page C3l)
notes that the front board usually
needs to be replaced every 12-18
months due to sows gnawing and
pawing at it.
“Woven wire, on the other hand,
has a long lifetime,” he says.
Purina’s Washam notes that
durability is only one reason he
recommends woven wire for the
entire crate.
“When we began construction of
a new facility at our research farm
in 1979, we installed wire flooring
in all 40 of the new crates. Ten
were raised 12 niches above floor
level, while 30 were placed at floor
level,” he says. In both cases, the
crates were placed over flush pits.
Busting crates had solid concrete
floors.
Although death loss in the
farrowing rooms with solid con
crete was, at 11.4 percent, almost
half the industry average,
Washam observes that the woven
wire crates did even better
“We were able to reduce pig
mortality to 8 3 percent on the
raised wire,” he reports. “We were
also able to increase the 21-day pig
weight by 1 2 lbs per head to 11.5
lbs. That’s a 10 5 lb per litter
weight increase over a three week
period ”
In testing raised wire crates
against concrete, metal and
wooden slatted floors, Puma also
pinpointed other advantages for
the sows on wire program versus
conventional, including .73 more
pigs/htter, 1.3 lbs. higher pig
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weight at weaning, and 19.0 lbs.
greater litter weight at weaning.
Washam further explains while
baby pigs farrowed on stainless
steel slats performed better than
pigs raised on concrete, they still
do not do well as pigs farrowed on
raised wire.
“The stainless slats brought
about a 16 5 percent reduction in
baby pig mortality. But, raised
woven wire did better than twice
as well, producing a 35.5 percent
reduction,” he says. “Metal slats
also helped improve 21-day pig
weight by 1.1 lbs. per head ”
Pigs farrowed on raised wire
averaged an additional 1.6 pounds
per head over pigs farrowed on
concrete, he adds. And, the need
for scours treatment was
decreased by 50 percent when hogs
were farrowed on raised woven
wire, as compared with concrete.
Purdue’s finding that elevated
units reduced the amount of time
required to clean crates was
sumlary confirmed by Washam’s
research, which indicated it took 33
percent less time overall.
“Although metal slatted floors
are somewhat easier to clean than
concrete (17 percent according to
the research), the one third
reduction is quite significant,
particularly for larger operations
on a continuous farrowing
program,” he says
The improved environment,
coupled with a good nutritional
program, helps speed up birth to
market tune and quicken herd
turnover, Washam contends. He
>)umlpa Suavely Says...
Make
ARM BUILDINGS
• Riding Arenas
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recommends starting baby pigs off
on a highly palatable creep ration
fed on a clean solid area for the
first 4-5 days, then placed in a
creep feeder.
By breaking down the added
weight gam into extra pork per
crate, Washam says he figures the
investment necessary to initiate a
sow’s-on-wire program can be
recouped in a relatively short
amount of tune.
“Figuring in higher weight gams
and reduced mortality realized
through elevated crates, producers
can achieve 19 extra pounds of
pork per litter,” he claims.
Multiplying the extra pork per
litter times the 12 litters which can
be run through the crate within a
year, the Purina researcher
estimates an additional 228 pounds
of pork per crate per year.
“If you figure those pigs could
sell as feeders for about 90 cents
per pound,” he adds, “the value of
the additional pork per crate per
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year is $205.20.”
Smce existing crates can nor
mally be adapted to the new
program, the major costs mvolved
include construction of flooring
and the raised platform.
“We’ve found that the average
cost of the platform is ap
proximately $lOO, while the wire
will run about $125,” says
Washam. He stresses however,
that the $225.00 cost per crate could
be slightly more or less depending
upon the quality and volume of
material purchased.
“By dividing the value of the
extra pork per crate per year into
the cost of the materials, hog
producers will fmd that it takes
shghtly more than one year to pay
off the investment,” figures
Washam. “Considering the
longevity of the wire, the crates
can contmue to generate extra
mcome long after the initial in
vestment has been paid off.”
Broiler placements
HARRISBURG Placements of
broiler chicks in the Com
monwealth during the week
ending January 24 were 2,082,000,
according to the Pennsylvania
Crop Reporting Service.
The placements/ were nine
percent below the corresponding
week a year earlier and 13 percent
below the previous week. Average
placements during the past nine
weeks were four percent above a
year ago.'
Placements in the 21 key poultry
producing states were 79,713,000,
slightly above the previous week
and one percent above the same
week a year earlier. Average
placements in the 21 key states
during the past rune weeks were
two percent above a year ago.
Broiler-fryers slaughtered m
Pennsylvania under federal in
spection during the week ending
January 14 totaled 2,093,000, with
an average lightweight of 4.22
pounds.
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