Topics:
Animal Refresher, Poultry Science
Effects of Poor Ventilation in Poultry House
Poor ventilation in poultry house may cause:
- Accumulation of CO
- Wet litter condition
- Accumulation of NH₃
- All the above — Correct Answer
Explanation:
Correct Answer: All the above
Poor ventilation in a poultry house leads to multiple harmful consequences simultaneously, affecting both the birds and the litter quality.
Effects of Poor Ventilation
- Accumulation of CO (Carbon Monoxide): Produced by incomplete combustion from gas brooders or heaters in poorly ventilated houses. CO is toxic even at low concentrations.
- Accumulation of NH₃ (Ammonia): Ammonia is produced from the microbial decomposition of uric acid in poultry litter (faeces + bedding). The maximum permissible limit of NH₃ in a poultry house is 25 ppm. Above this level, it causes respiratory distress, eye damage (keratoconjunctivitis), and increased susceptibility to respiratory diseases like Chronic Respiratory Disease (CRD).
- Wet litter condition: Without adequate airflow, moisture from bird respiration and droppings cannot evaporate, leading to wet, caked litter. Wet litter promotes coccidiosis, bumblefoot, breast blisters, and ammonia build-up.
Safe Gas Levels in Poultry House
- NH₃ maximum: 25 ppm
- CO₂ maximum: 3,000 ppm (0.3%)
- CO should ideally be zero
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Poultry Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
