Today, we are going to discuss about the ideal number of blocks above ground level in constructing a poultry pen house.
Most farmers often want to know how many courses of blocks they are supposed to raise above the ground level, this is a very good question as many farmers normally raise blocks very high above the ground level and this usually prevents birds from having access to good ventilation.
The ideal courses of blocks to be raised above the ground level is either 1 or 2 blocks at most above the ground level, this will grant the birds access to good ventilation, meanwhile the number of blocks that will be under the ground largely depends on the topography of the land in question.
Different types of poultry houses
- Brooder / chick house-It is used to brood and rear egg-type chicks from 0 to 8 weeks of age.
- Grower house-It is used to grow egg-type birds from 9 to 18 weeks of age.
- Brooders cum grower house-Here, the birds are reared from 0 to 18 weeks of age (entire brooding and growing period of egg-type chicken).
- Layer house-In which birds over 18 weeks of age are reared, usually up to 72 weeks of age.
- Broiler house-In which broilers are reared up to 6 weeks of age.
- Breeder house-In which both male and female breeders are maintained at appropriate sex ratio.
- Environmentally controlled (EC) house-In which, entire environment is manipulated in such a way that is optimum for the birds growth.
Poultry House Orientation
The poultry house should be located in such a way that long axis is in east-west direction. This will prevent the direct sunshine over the birds.
Each broiler require one square foot of floor space while a layer requires two square feet of floor space under deep-litter system of rearing. So the size of the house depends on the number of birds to be reared.
The length of the house can be of any extent. The number of birds reared and availability of the land determines the length of poultry house.
The open sided poultry houses in tropical countries should have a width not more than 22 to 25 feet in order to allow ample ventilation and aeration at the mid-portion. Sheds wider than this will not provide adequate ventilation during the hot weather.
If the width of the shed is more than 25 feet, ridge ventilation at the middle line of the roof top with proper overhang is a must. Hot air and obnoxious gases which are lighter than air move upward and escape through ridge ventilation.
In environmentally controlled poultry houses, the width of the house may be even 40 feet or more since the ventilation is controlled with the help of exhaust fans.
The height of the sides from foundation to the roof line should be 6 to 7 feet (eaves height) and at the centre 10 to 12 feet. In case of cage houses, the height is decided by the type of cage arrangements (3 tier or 4 tier).
Good foundation is essential to prevent seepage of water into the poultry sheds. The foundation of the house should of concrete with 1 to 1.5 feet below the surface and 1 to 1.5 feet above the ground level.
The floor should be made of concrete with rat proof device and free from dampness. The floor of the house should be extended 1.5 feet outside the wall on all sides to prevent rat and snake problems.
The door must be open outside in case of deep-litter poultry houses. The size of door is preferably 6 x 2.5 feet. At the entry, a foot bath should be constructed to fill with a disinfectant.
9) Side walls
The side wall should be of 1-1.5 feet height, and generally at the level of bird’s back height. This side wall protects the bird during rainy days or chill climate and also provides sufficient ventilation. In case of cage houses, no side wall is needed.
The roof of the poultry house may be thatched, tiled, asbestos or concrete one depending upon the cost involvement. Different types of roofs are Shed, Gable, half-monitor, full-monitor (Monitor), Flat concrete, Gambrel, Gothic etc. Gable type is mostly preferred in tropical countries like India.
The overhang of the roof should not be less than 3.5 feet in order to prevent the entry of rain water into the shed.
Light should be provided at 7-8 feet above the ground level and must be hanged from ceiling. If incandescent bulbs are used, the interval between two bulbs is 10 feet. In case of fluorescent lights (tube lights) the interval is 15 feet.
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