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The semi environmentaly controled broiler house offers capacities of 500 / 600 to 12 500 / 15 000 chickens in 500 / 600 increments.
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The chicken house is 6.6 m wide with length increments of 4.5 m. Maximum serviceable length is about 112.5 m or 25 sections. The ceiling height is 1.85 m at the eves and 2.45 m at the ridge.
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The complete structure is pre-fabricated and is then bolted together on site no welding is necessary on site, and drilling is limited to 5mm holes for pop rivets.
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Portal frames are of I.P.E 100 (AA) 350WA I-PROFILES and are welded onto 10 mm footplates. The frames are spaced at 4.5 m.
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Roof purlins are of 100 X 50 X 20 X 2 mm lipped channel and are spaced at 1.25 m.
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Cross bracing of 10 mm round bar is fitted between all portal frames on both sides.
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Roof and side cladding 0.5 mm Z275 galvanized I.B.R wide span sheet with roof centre crank. The roof has a 1.0 m overhang.
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Curtains are of 550 gr. P.V.C. with welded seams. They open from top to bottom and are winch operated.
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Ventilation openings are 1 800 mm high and are covered with 13 mm galvanized bird wire.
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Paddle fans (ceiling fans) of 1.4m diameter are fitted down the centre of the chicken house at 1.5 m intervals and are thermostatically controlled.
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The drinking system is automatic drinkers with pressure controlled tank. The feeding system is tube feeders.
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The brooders are aluminium hover type with infrared quartz heating elements and are thermostatically controlled. Heat of 2.7 / 3.3 / 4.0 watt per chicken is supplied.
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A tubular frame door of 1.5 X 2.0m is fitted to one end, or both on request.
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Finishing consist of cleaning the steel with deoxidene, then applying one coat of self-etch primer and two coats of Q.D. enamel by spray gun.
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The floor is cast on a 200 micron groundsheet with REF. 100 weld mesh in 25 MPa concrete of 75 mm thickness with 10 mm maximum variation. And is finished by steel towelling. The buyer must supply sand, stone and cement
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Optional roof isolation consists of 50 mm thick koolspan panels and a minimum ventilation system with ridge inlets and a timed controlled extractor fan.
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The design is modular and can be extended in 4.5 m increments.
THIS IS AN INDUSTRIAL QUALITY STRUCTURE !
We use only heavy, durable materials and the best construction methods and workmanship.
We are NOT IN COMPETITION with manufacturers of cheap, lightweight, temporary structures.
Our broiler house has a projected service life of 25 years with minumal maintence.
It is waterproof and airtight. The structure is designed for wind loading of 144 Km/h without damage (excepting the curtains) and the roof can carry a load of 40 Kg / m2 ( 60mm of hail )
THAT IS WHY STAALBOER CAN WARRANT ITS PRODUCT :
The steel structure carries a warranty of 5 years against damage by wind, rain and hail.
DIMENSIONS AND FIGURES FOR THE SEMI ENVIRONMENTALY CONTROLED BROILER HOUSE :
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These chicken houses are 6.6 m wide and are available in 4.5m length increments. Maximum length is limited only by serviceability, and is around 112.5 m or 25 sections.
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Depending on marketing age and mass, each 4.5m section can accommodate 500 to 600 chickens at a stock density of 16.8 to 20.2 birds / m2. The house can be any number of sections. This implies a minimim capacity of 500 to 600 birds and a maximum of 12 500 to 15 000 birds.
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MARKETING AT 35 DAYS :
20.2 Birds / m2 at a live mass of 1.85 Kg. with a 4% mortality equals 36 Kg / m2. Coupled with a feed conversion ratio of 1.70, this corresponds to a PEF figure of 298.
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MARKETING AT 42 DAYS : 16.8 Birds / m2 at live mass of 2.25 Kg with a 5% mortality equals 36 Kg / m2. Coupled with a feed convertion ratio of 1.72, this corresponds to a PEF figure of 296.
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With a well designed house, good chicks and feed and proper management, a PEF figure of 300 plus is attainable The better commercial farmers achieve a PEF of 320 plus at stocking density of 21.5 / m2 in curtain houses. (PEF is short for prodution efficiency facture : PEF = livability X live mass in Kg X 100 / age in days X feed conversion ratio).
FULL OF FEATURES :
VENTILATION : The curtains are winch operated and open from top to bottom, this is essential for keeping draughts off the chickens in the brooding period, and allows for large ventilation openings even in rainy, windy weather. This is completely impossible with roll-up curtains. At a house width of 6.6 m, ventilation openings equal 55 % of floor area and the curtains slide down to a height of only 150 mm above floor level. This gives you excellent natural ventilation even with little air movement. Assisted by paddle fans, one coplete air exchange per minute can be achieved without any natural air movement. This allow relatively high stocking densities. It can be seen that the stocking densities quoted above are very conservative. The fans are thermostatically controlled .
HEATING : 2 aluminium hover type brooders of 1 050 X 1 250 mm are fitted per 4.5 m house section. Heat is supplied by 2 X 640 mm long infrared quartz heating elements per brooder, wich emits medium wave infrared energy. This is the most efficient wavelength for heating water (chickens are 80% water). The number and shape of the elements gives a very even distribution of heat. The elements are available in 500, 600, and 750 watt and supply 2.7, 3.3 or 4.0 watt per chicken.The heating system increase production and reduse energy costs by as much as 45% compared to the par 38 brooding lamps. the brooders are thermostatically controlled.
ROOF OVERHANG : An overhang of 1.0 m allows large ventilation openings even in rainy, windy weather it also make is possible to keep direct sunlight out of the broiler house completely, without compromising ventilation. This is essential, as direct sunlight causes a nervous reaction in the chickens wich promotes cannibalism and lead to slower growth and high mortality.
EQUIPMENT : Tube feeders at 42 / 50 chickens per feeder are used. This implies filling once a week in the first 2 weeks and once in 3 days even in the fith week. In a 35 day cycle it is necesarry to fill the feeders a total of only 10 times. This makes an autometed feeding system at high capital and maintenance cost seem uneconomical. The smaller number of chickens per feeder (64%) also means less competition for food and better growth. Automatic ballasted drinkers at 83 / 100 chickens per drinker are used.
ROOF ISOLATION : The fitment is optional. Roof isolation increases the therminal resistance (R- value) of the roof from 0.9 to 10.2. this reduces the rate of heat transfer by a factor of 11. Seeing that about 75% of total heat is lost or gained through the roof, the isolation meterial improves the thermal effieciency of the chicken house by about 300%. This will substantially reduce heating costs and improve performance. The koolspan panels are also aethetically pleasing and easy to clean.
