Open house vs controlled shed: which to build
A controlled shed produces better birds and a much higher fixed cost. Which is right depends on your district’s summer, your electricity, and your capital.
This is the first real decision a new poultry farm makes, and it is close to irreversible. It also gets argued badly — usually as though controlled housing is simply the better option that some farms cannot afford.
It is not that simple. The controlled shed wins on performance and loses on flexibility, and flexibility has been worth a great deal in Pakistani poultry.
What each actually is
Open house. Side walls that are largely open, with curtains. The inside climate follows the outside climate, softened by curtains, fans and roof insulation. Cheap to build, cheap to run, and fundamentally at the mercy of the weather.
Environmentally controlled. Sealed, insulated, tunnel-ventilated, usually with evaporative cooling pads. The inside climate is set by you.
The comparison
| | Open house | Controlled | | --- | --- | --- | | Capital cost | Low | High | | Stocking density | Lower | Higher | | Summer performance | Poor to very poor | Good | | Winter performance | Ventilation/ammonia problems | Good | | FCR | Worse | Better | | Mortality | Higher, spikes in heat | Lower | | Electricity | Modest | Substantial | | Generator | Useful | Essential | | Skill required | Moderate | High | | Risk if left empty | Low | High — fixed costs continue | | Biosecurity | Harder | Much better |
The case for controlled
Summer. This is the whole argument. In Multan, Rahim Yar Khan, or most of Sindh, an open house spends months in conditions where broilers reduce feed intake to survive. That is lost growth every day and dead birds on the worst days.
Density. Controlled housing holds far more birds per square metre, which changes the return on the land.
Consistency. Buyers and integrators pay for predictable weights on predictable dates. Open houses deliver whatever the weather allowed.
Biosecurity. A sealed building keeps wild birds out. Open sheds cannot.
The case for open house
Capital. It is a fraction of the cost, and it is the reason the large majority of Pakistani broiler production is still independent smallholders in open sheds.
Low fixed costs mean you can sit out a bad market. An open shed standing empty costs almost nothing. A financed controlled shed standing empty is an expensive decision every month.
Electricity. Controlled housing needs reliable power. Where load-shedding is severe and the generator runs constantly, the running cost erodes the performance advantage — and the risk of a failure rises.
Skill. A controlled shed run badly is worse than an open shed run well. Ventilation management is genuinely technical, and the failure modes are fast.
The decision, honestly
Ask four questions in this order:
- How hot and how humid is your district, for how many months? The hotter and longer, the stronger the case for controlled.
- Is your electricity supply reliable, and can you afford to run a generator as a routine cost, not an emergency one? If no, controlled housing is a risk, not an upgrade.
- Can you finance the build and still fund a full cycle of working capital, plus a losing cycle? If no, build smaller or build open.
- Who is actually going to run it day to day? If the answer is a manager you have not hired yet, the controlled shed is a bigger bet than it looks.
What a controlled shed costs to build →
The middle path
Many farms improve an open house substantially without converting it: proper roof insulation, better fans, roof sprinklers, and cutting stocking density in summer. That is a fraction of the capital and recovers a real share of the performance gap.
It is also the sensible first move for a farm that intends to go controlled later and wants to learn to manage birds first.