Ammonia concentration in poultry housing should not exceed about 20 parts per million, as higher levels irritate the respiratory tract, reduce growth performance, and increase susceptibility to disease.
Maximum tolerable level of ammonia in poultry shed:
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This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.