Nigeria has a hot climate. For enclosed, large-scale broiler and layer houses, the optimal temperature control solution is a tunnel ventilation system with cooling pads，to achieve a suitable raising environment in the house.
An effective cooling system must be able to remove heat from the house, control humidity, and remain operational during power outages, making daily management simple and efficient.
Why are chicken farms so afraid of high temperatures?
Chickens are not very efficient at sweating. They primarily lose body heat through respiration, radiation, and airflow over their bodies. As the temperature in the chicken coop rises, chickens will begin to pant, spread their wings, reduce their feed intake, huddle around the waterers, become inactive, and in severe cases, even die from heatstroke.
Overheating in poultry houses affects chickens’ feed intake, growth rate, egg production, fertilization rate, eggshell quality, and flock survival rate.
Optimal Solution: Tunnel ventilation system + Cooling Pads
For commercial poultry farms in Nigeria’s hot climate, Retech Farming’s preferred solution is a tunnel ventilation system with evaporative cooling pads.
In this design, large exhaust fans are installed at one end of an enclosed poultry house, while cooling pads are installed at the other end. The exhaust fans draw outside air into the humidified cooling pads, where it is cooled through evaporation. The air then flows rapidly and evenly along the length of the poultry house, eventually being exhausted by the exhaust fans.
Tunnel-ventilated chicken houses require excellent sealing. Damaged curtains, unsealed doors, gaps, or incompletely enclosed side walls can all allow hot air to enter the chicken house, reducing pressure within the tunnel and affecting cooling efficiency.
How to build a Closed, insulated chicken house?
Retech Farming’s steel-structured chicken houses use high-strength galvanized steel, are wind and earthquake resistant, and can be installed quickly, completed within 30-60 days. They provide a safer breeding environment and achieve ideal ventilation and insulation. Maintenance costs are lower than traditional concrete chicken houses.
Why This System Fits Nigerian Poultry Farms?
Nigeria’s climate varies greatly. The northern states are hot and dry, while the south and coastal areas can be hot and humid. Tunnel ventilation is effective in both environments because the airflow itself significantly lowers the birds’ body temperature. The cooling pad’s effect is most pronounced when the outdoor air is sufficiently dry.
| Cooling type | applicability in Nigeria | advantages | disadvantages |
| Open-plan house with curtains | Small farms or low-capital production | Low initial cost and easy to achieve natural ventilation | Unsuitable for extreme heat and susceptible to heat stress. |
| Standard circulating fan | For supplementary use only. | Improved local airflow | Incapable of reliably removing heat or creating uniform airflow throughout the house. |
| Atomizer or sprayer | Partial applications. | Low cost | Poor management can lead to damp bedding and increased humidity. |
| Tunnel ventilation only | Suitable for arid regions and moderate temperature environments. | Strong wind speed, lower risk of humidity than excessive misting | During hot weather, it may not adequately reduce the temperature of incoming air. |
| Tunnel ventilation + evaporative pad | Best suited for modern commercial farms. | Best cooling effect | Requires proper design, water quality, maintenance, and backup power. |
For high-density broiler production, commercial layer hens, breeder hens, and environmentally controlled poultry houses, tunnel ventilation maximizes the balance between bird comfort, production performance, scalability, and operational control.
Retech Farming – A one-stop solution provider for Nigerian farms
RETECH has project design experience in more than 80 countries all over the world, focusing on automatic layer, broiler and pullet raising equipment manufacture, research and development. We are a factory manufacturer located in Qingdao, China. You are welcome to visit us！
FAQ
1. How many exhaust fans does a chicken house need?
The number and capacity of fans depend on the length, width, and ceiling height of the chicken house, the number of poultry, stocking density, poultry weight, and local climate. A project manager will provide advice.
2. Are tunnel ventilation systems suitable for broilers and laying hens?
Yes. Tunnel ventilation systems can be used in commercial broiler, laying hen, breeder, and pullet houses, provided the system is designed according to the house size, flock size, and age of the chickens.
3. Can poultry cooling systems reduce chicken mortality?
A well-designed and maintained cooling system can reduce the risk of heat stress, improve poultry comfort, promote feed intake, and help prevent mortality caused by high temperatures.
About the author: A poultry farming equipment ventilation expert, proficient in the design and construction of enclosed chicken houses.
Email：director@retechfarming.com
LinkedIn: www.linkedin.com/in/kelly-li-556465254/
Post time: Aug-24-2026
