How to Reduce Ammonia Levels in Poultry Houses

Ammonia control in poultry production can be achieved through various methods, either individually or in combination. 

These strategies help improve air quality in poultry houses and enhance overall bird performance. Key approaches include ventilation, house management, and litter/manure management.

Ventilation Management

Ventilation is essential for maintaining air quality by removing ammonia from the house and replacing it with fresh air. However, ventilation alone does not reduce or prevent ammonia formation. 

Maintaining proper airflow throughout all seasons helps lower ammonia levels and keeps litter dry, preventing excess moisture buildup.

Poultry House Management

Good house management can significantly reduce ammonia formation. One key factor is ensuring that litter and manure are not excessively wet. Preventive measures include

• Repairing leaking drinkers or water systems

• Selecting appropriate bedding materials

• Maintaining proper relative humidity according to bird age

• Reducing overcrowding

• Providing adequate heating and ventilation

Litter and Manure Management Strategies

1. Feed Management

Ammonia formation is closely linked to nitrogen levels in manure. High nitrogen levels occur when poultry cannot properly digest and absorb protein, which may result from

• Excessive protein content in feed

• Poor gut health or disease

• Inefficient digestion

These issues can be managed by

• Balancing protein and amino acid levels in feed

• Maintaining good digestive health

Another approach is adding feed additives that help bind ammonia. These additives

• Reduce urea and ammonium levels in the blood

• Decrease excessive nitrogen breakdown in the gut

• Trap ammonia in manure, preventing it from being released as gas

Using such additives from the beginning of the production cycle until birds leave the house can help control ammonia emissions effectively.

2. Manure and Litter Treatment

• Acidifying agents: Lower the pH of litter (below the typical 7.5–8.5 range), slowing microbial activity that produces ammonia

• Absorbent materials: Often clay-based, these reduce moisture and slow microbial processes

• Can be applied by spraying or spreading over litter/manure to control ammonia release and reduce odor

• Some products act as inhibitors of microbial enzymes (such as urease), preventing ammonia formation

Limitations of Control Strategies

The effectiveness of these methods may vary depending on:

• Accumulation of litter and manure

• Moisture levels

• Type of poultry

• House temperature

• Disease conditions

• Combination of multiple environmental factors

Ammonia emissions in poultry farming are a complex issue. However, with proper ventilation, effective house management, and integrated ammonia-reduction strategies, it is possible to control ammonia levels successfully in all seasons, improving both animal welfare and farm productivity.