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| Diseases / List of Parasitic Diseases / Disease description: |
| Heterakis (Ascarid) Infection in Waterfowl |
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General and References
Disease Summary |
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| WATERFOWL | Usually asymptomatic nematode worm infection of the caecum; generally seen only as an incidental finding at post mortem examination. |
Alternative Names (Synonyms) |
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Disease Type |
| Parasitic - Roundworms |
Infectious/Non-Infectious Agent associated with the Disease |
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| Nematode worm Heterakis spp. | |
Infective "Taxa" |
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Non-infective agents |
-- |
Physical agents |
-- Indirect / Secondary |
Disease Author |
Debra Bourne |
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Major References / Reviews |
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Code and Title List |
B12.55.w1, B13.46.w1, B16.19.w1, B24, B37.x.w1, B48.20.w20, B78 |
Other References |
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Code and Title List |
B91 J1.16.w8, J1.33.w4 |
Clinical Characteristics and Pathology
Detailed Clinical and Pathological Characteristics |
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General |
WATERFOWL | Usually asymptomatic infection found incidentally at post mortem examination. |
Clinical
Characteristics |
WATERFOWL | |
Incubation |
WATERFOWL | Juvenile nematodes are initially (first four days after infection) closely attached to mucosa, and may damage the mucosa at this time (B24). |
Mortality / Morbidity |
WATERFOWL | Commonly found at post mortem examination (B37.x.w1); may cause clinical disease with heavy infection (B12.55.w1). |
Pathology |
WATERFOWL |
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Human Health Considerations |
| None (B37.x.w1). |
Susceptibility / Transmission
General information on Susceptibility / Transmission |
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| WATERFOWL | |
Disease / Agent has been reported in either the wild or in captivity in: |
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| Disease
recorded in:
Infection recorded in:
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WATERFOWL Host Species List |
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Disease / Agent has been specifically reported in Free-ranging populations of: |
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Infection
recorded in:
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WATERFOWL Host Species List |
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Environment/Geography
| General Information on Environmental Factors/Events and Seasonality |
| -- |
Regions / Countries where the Infectious Agent or Disease has been recorded |
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Regions / Countries where the Infectious Agent or Disease has been recorded in Free-ranging populations |
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General Investigation / Diagnosis
General Information on Investigation / Diagnosis |
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| WATERFOWL | Faecal flotation: thick walled ellipsoidal eggs 60µm x 40µm (B13.46.w1, B37.x.w1). |
| Related Techniques | |
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Similar Diseases (Differential Diagnosis) |
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| WATERFOWL | Other ascarid infections: Contracaecum (Ascarid) Infection, Ascaridia (Ascarid) Infection, Porrocaecum (Ascarid) Infection. |
Treatment and Control
Specific Medical Treatment |
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| WATERFOWL | No treatment usually necessary (B37.x.w1). Mebendazole 5-15mg/kg for two days, tetramisole 25-50mg/kg oral, thiabendazole 200-500mg/kg suggested (B16.19.w1). |
| Related Techniques |
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General Nursing and Surgical Techniques |
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| WATERFOWL | -- |
| Related Techniques | -- |
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Preventative Measures |
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| Vaccination | WATERFOWL | -- |
| Prophylactic Treatment | WATERFOWL |
For information on routine parasite control see Preventative Medicine for Birds - Parasite screening and Routine Control Measures |
| Related Techniques |
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Environmental and Population Control Measures |
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| General Environment Changes, Cleaning and Disinfection | WATERFOWL |
General sanitation (B24). For information on routine parasite control see Preventative Medicine for Birds - Parasite screening and Routine Control Measures |
| Population Control Measures | WATERFOWL | -- |
| Isolation, Quarantine and Screening | WATERFOWL | -- |
| Related Techniques |
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