Respiratory diseases in poultry are one of the leading causes of reduced productivity and increased production costs in modern poultry farming. Especially under conditions of high stocking densities, erratic weather, and increasing pathogen pressure, respiratory diseases can spread rapidly and cause significant losses for farmers.
So, what causes respiratory diseases in poultry? How are they transmitted? How do they affect the economic efficiency of farms? And what are the sustainable solutions for disease prevention?
Causes of respiratory diseases in poultry
In practice, respiratory diseases are often not caused by a single agent but by a combination of various factors, including viruses, bacteria, and unfavorable environmental conditions.
Common viral agents* Newcastle Disease
* Avian Influenza
* Infectious Bronchitis
* Infectious Laryngotracheitis
Common bacterial agents
* Mycoplasma gallisepticum
* Escherichia coli
* Ornithobacterium rhinotracheale (ORT)
* Pasteurella multocida
Factors that contribute to disease outbreaks.
* Heat stress.
* Poor ventilation in the barn.
* High concentrations of toxic gases NH3 and H2S.
* Overcrowding.
* Poor quality drinking water.
* Biofilm present in the water system.
* Inappropriate vaccination program.
Transmission routes of avian respiratory disease
Respiratory diseases can spread very quickly within a herd through various routes.
Direct transmission
* Through contact between sick and healthy animals.
* Through nasal secretions, tears, and droplets from coughing or sneezing.
Indirect transmission
* Through the air and barn dust.
* Through contaminated drinking water and feed.
* Through farming equipment, transport vehicles, and caretakers.
* Through wild birds, insects, and rodents.
Under unfavorable weather conditions or high stocking densities, pathogens can spread throughout the entire herd in a short period of time.
Common symptoms of upper respiratory disease in poultry.
Poultry with respiratory illnesses typically exhibit symptoms such as:
* Coughing and wheezing.
* Constant sneezing.
* Runny nose and watery eyes.
* Difficulty breathing, gasping for air.
* Facial swelling or sinusitis.
* Reduced appetite and water intake.
* Chickens become withdrawn and less active.
* Increased mortality rate in severe cases or with secondary infections.
Early detection of abnormal signs improves treatment effectiveness and limits economic losses.
The harmful effects of respiratory diseases on livestock productivity
For broiler chickens
* Reduced average daily gain (ADG).
* Increased feed conversion ratio (FCR).
* Extended time to market.
* Increased culling rate at slaughterhouse.
For laying hens
* Reduced egg production.
* Reduced eggshell quality.
* Increased rate of rejected eggs.
* Reduced fertility.
For breeding chickens
* Reduced hatching rate.
* Reduced quality of commercial breeding stock.
Economic losses caused by respiratory diseases.
In addition to direct mortality rates, respiratory diseases cause many insidious but long-term losses such as:
* Increased costs for medication and antibiotics.
* Increased labor and management costs.
* Increased rearing time and feed costs.
* Reduced vaccine effectiveness.
* Reduced farm productivity and profitability.
In many cases, losses due to reduced weight gain and productivity are even greater than losses due to mortality rates.
Respiratory disease prevention process through biosecurity in livestock farming.
Prevention is always a more effective and economical solution than treatment. An effective biosecurity program should include:
1. Control of incoming breeding stock
* Use breeding stock from a reliable source.
* Ensure the breeding stock is fully vaccinated.
2. Control of people and vehicles entering and leaving the farm
* Limit visitors.
* Implement mandatory changing of clothes and disinfection.
* Disinfect transport vehicles before entering the farm.
3. Management of the farm environment:
* Maintain appropriate temperature and humidity.
* Improve ventilation.
* Reduce the concentration of toxic gases and dust in the farm.
4. Management of the drinking water system
* Regular cleaning
RESPIGUARD® – Respiratory support using a plant-based essential oil approach.
RESPIGUARD® is developed from a combination of naturally derived active ingredients including:
* 1,8-Cineole (Eucalyptol) extracted from eucalyptus essential oil.
* Garlic extract.
* Thyme extract.
This combination provides a multi-faceted solution to support the respiratory health of pets.
The support mechanism of RESPIGUARD®
1. Helps to clear the airways.
1,8-Cineole from eucalyptus oil is known for its ability to help thin secretions and support the natural clearance function of the respiratory system, thereby contributing to maintaining airway patency.
2. Helps reduce oxidative stress during inflammation.
During respiratory illnesses, animals' bodies often produce large amounts of free radicals that damage the mucous membranes.
Natural compounds in garlic and thyme provide polyphenols and antioxidants that help protect respiratory mucous membranes from oxidative stress.
3. Supports the maintenance of respiratory mucosal barrier function.
The respiratory mucosa is the first line of defense against pathogens. The plant-based active ingredients in RESPIGUARD® help support the maintenance of the integrity and natural protective function of the respiratory mucosa.
4. Supporting the herd's resilience during periods of disease pressure.
During periods of heat stress, weather changes, post-vaccination, or when pathogen pressure increases, respiratory health support can contribute to:
* Maintaining appetite.
* Supporting recovery.
* Helping the herd better cope with stress.
* Contributing to maintaining productivity.
The role of each component in RESPIGUARD®
1,8-Cineole from Eucalyptus Oil
* Supports airway clearance.
* Supports the natural clearance of secretions.
* Contributes to maintaining physiological respiratory function.
Garlic Extract
* Provides natural sulfur compounds such as allicin.
* Supports antioxidant activity.
* Supports the body's natural immune response.
Thyme Extract
* Rich in natural phenolic compounds such as thymol and carvacrol.
* Supports the maintenance of respiratory mucosal health.
* Supports the balance of the respiratory microbiome and environment.
When should you use RESPIGUARD®?
RESPIGUARD® is suitable for use during the following periods:
✅ Sudden weather changes.
✅ Heat stress.
✅ After vaccination programs.
✅ High stocking density periods.
✅ When the flock is under respiratory disease pressure.
✅ During the recovery period after illness.
RESPIGUARD® is part of a modern respiratory management strategy.
An effective respiratory disease management program needs to be built upon a combination of interconnected elements:
Biosecurity
↓
Appropriate Vaccination
↓
Management of the Farm Environment
↓
Optimal Nutrition
↓
Support for Respiratory Health with Plant Essential Oils
↓
Maintaining Herd Health and Stabilizing Productivity
Biosecurity Procedures Help Reduce the Risk of Respiratory Diseases
Controlling Access to the Farm for People and Vehicles
* Disinfection is mandatory.
* Clean and dirty areas are clearly separated.
* Visitors are restricted.
Managing the livestock farm environment
* Reduce NH3 and H2S concentrations.
* Improve ventilation.
* Control barn dust.
Drinking water system management
* Regularly clean the water lines.
* Control biofilm.
* Ensure the quality of incoming water.
