Skip to main content
Poultria Poultria

Poultria Home

Veterinary Reviewed

Aspergillosis in Poultry: Brooder Pneumonia & Treatment

A veterinary reference guide on fungal spore transmission, lung pathology, and sanitization.

Scientific Overview

Aspergillosis, also known as Brooder Pneumonia, is an acute or chronic fungal respiratory disease of birds caused by Aspergillus fumigatus. Fungal spores thrive in damp litter and contaminate chick lungs in the brooder.

Aspergillosis Symptoms & Pathology

Aspergillosis symptoms in poultry include silent gasping (dyspnea), rapid breathing (hyperpnea) without associated tracheal rales, extreme somnolence (sleepiness), and central nervous signs (paralysis, twisting neck) if the fungus metastasizes to the brain.

Chicks are highly susceptible during the first 3 weeks of life. Post-mortem necropsy reveals numerous firm, yellow-white nodular lesions (1-3 mm) scattered throughout the lung tissue and thickened air sacs covered in green, moldy fungal growth. Identify these respiratory signs using the Diagnostic Wizard.

Fungal Spore Transmission & Litter Risk Factors

Transmission occurs through inhalation of millions of microscopic conidia (spores) of Aspergillus fumigatus. Spores originate from moldy wood shavings, straw litter, or contaminated hatchery incubators. High relative humidity combined with warm brooding temperatures (>32°C) creates the perfect incubator for fungal growth in damp bedding.

Aspergillosis Treatment & Brooder Sanitation

There is no effective or economically viable individual antibiotic or antifungal treatment of Aspergillosis in poultry. Control relies entirely on preventive sanitation: immediately remove damp, moldy litter, spray wood shavings with copper sulfate solutions (1:2000 dilution), and ensure high negative air pressure ventilation to exhaust dust and spores, calculated using our Ventilation Fan CFM Calculator.

help_outline

Aspergillosis in Poultry: Brooder Pneumonia & Treatment — Frequently Asked Questions

What is brooder pneumonia in chickens? expand_more
It is the common name for acute Aspergillosis, a respiratory disease caused by inhaling mold spores from damp litter during the first weeks of brooding.
Can poultry Aspergillosis be treated with antibiotics? expand_more
No. Aspergillosis is a fungal infection, so antibacterial antibiotics are ineffective. No commercial antifungal therapy is labeled for meat birds, so prevention is key.
How do I prevent Aspergillosis in the brooder? expand_more
Avoid damp wood shavings, keep feed dry, disinfect incubators, and maintain high minimum ventilation runtimes to exhaust fungal spores.
biotech

Related Pathologies & Differential Diagnosis

Differential diagnostic screening: Cross-reference clinical lesions and flock symptoms against these closely associated avian pathologies:

Google Preferred Source
1-Click Search Personalization

Add Poultria to your Google Preferred Sources

Follow Poultria on Google so our peer-reviewed poultry veterinary research, commercial breed genetics, and agronomic field guides are highlighted and cited first in your Google Search, Top Stories, and AI Overviews.

Diagnostic Sabouraud Dextrose Agar (SDA) culture of Aspergillus fumigatus showing smoky green-velvety colonies with white peripheral apron biotech Clinical Pathology
Clinical Pathology: Aspergillosis (Aspergillus fumigatus) Culture Morphology • Photo: Ajay Kumar Chaurasiya • CC BY 4.0

Related Calculators

Scientific Literature

  • Diseases of Poultry, 14th Edition (David E. Swayne et al., 2020).
  • Veterinary Mycology Reference Manual (Avian Pathology Board).