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Use of a hypobaric chamber as a model system for investigating ascites in broilers
R L Owen1, R F Wideman, A L Hattel
1Department of Veterinary Science, College of Agriculture, Pennsylvania State University, University Park 16802.
Avian Diseases
|July 1, 1990
Summary
This study used a hypobaric chamber to simulate high altitudes for broiler chickens, effectively modeling ascites syndrome. High-altitude exposure significantly increased physiological markers associated with the disease.
Area of Science:
- Animal Science
- Veterinary Medicine
- Physiology
Background:
- Ascites syndrome is a significant concern in broiler production.
- Understanding the pathophysiology of ascites is crucial for disease management.
Purpose of the Study:
- To evaluate a hypobaric chamber as a model for ascites syndrome in broilers.
- To investigate the physiological changes associated with ascites at simulated high altitudes.
Main Methods:
- Broilers were reared in a hypobaric chamber simulating altitudes of 3000, 3500, and 5000 meters.
- Physiological parameters including EKG amplitude, packed cell volume, and organ-to-body weight ratios were measured.
- Comparison was made with control groups reared at a lower altitude (366 meters).
Main Results:
- The hypobaric chamber model successfully reproduced ascites syndrome.
- Broilers at 5000 meters showed significantly increased EKG amplitude, packed cell volume, and heart/lung-to-body weight ratios compared to controls.
- A trend indicated higher EKG amplitudes in birds that died from ascites at 5000 meters.
Conclusions:
- A hypobaric chamber is a viable model for studying broiler ascites syndrome.
- High simulated altitudes induce physiological changes consistent with ascites.
- EKG amplitude may serve as a potential indicator for ascites severity in broilers.