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Gastrointestinal disorders
/content/chapter/10.22233/9781910443194.chap16
Gastrointestinal disorders
- Author: Richard Jackson
- From: BSAVA Manual of Backyard Poultry Medicine and Surgery
- Item: Chapter 16, pp 178 - 205
- DOI: 10.22233/9781910443194.16
- Copyright: © 2019 British Small Animal Veterinary Association
- Publication Date: September 2019
Abstract
Gastrointestinal disorders in backyard poultry are incredibly common and the most common aetiology is poor husbandry. This chapter covers conditions of the oral cavity, crop, oesophagus, and proventriculus and ventriculus. Endoparasites, conditions of the intestinal tract causing diarrhoea and related systemic diseases are described in depth. Consideration is also given to the inappetent bird and veterinary public health.
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Figures
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16.1
A 5-year-old Maran hen with the dry form of fowlpox. © 2019 British Small Animal Veterinary Association
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16.1
A 5-year-old Maran hen with the dry form of fowlpox.
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16.2
A 2-year-old hen with sour crop. © 2019 British Small Animal Veterinary Association
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16.2
A 2-year-old hen with sour crop.
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16.3
An ex-battery hen undergoing surgery for an impacted crop. © 2019 British Small Animal Veterinary Association
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16.3
An ex-battery hen undergoing surgery for an impacted crop.
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16.4
Ascaridia galli in a backyard chicken. © 2019 British Small Animal Veterinary Association
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16.4
Ascaridia galli in a backyard chicken.
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16.5
Heterakis worms in the caeca of a 6-month-old turkey. © 2019 British Small Animal Veterinary Association
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16.5
Heterakis worms in the caeca of a 6-month-old turkey.
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16.6
Occlusion of the gut in a red grouse with tapeworms. © 2019 British Small Animal Veterinary Association
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16.6
Occlusion of the gut in a red grouse with tapeworms.
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16.7
‘Hobnail’ liver lesions caused by Histomonas meleagridis (‘blackhead’). © 2019 British Small Animal Veterinary Association
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16.7
‘Hobnail’ liver lesions caused by Histomonas meleagridis (‘blackhead’).
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16.8
A depressed 6-week-old pullet with coccidiosis. © 2019 British Small Animal Veterinary Association
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16.8
A depressed 6-week-old pullet with coccidiosis.
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16.9
The blood filled caeca of a 4-week-old Hubbard chicken with coccidiosis. © 2019 British Small Animal Veterinary Association
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16.9
The blood filled caeca of a 4-week-old Hubbard chicken with coccidiosis.
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16.10
A 2-week-old Bronze turkey with coccidiosis. © 2019 British Small Animal Veterinary Association
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16.10
A 2-week-old Bronze turkey with coccidiosis.
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16.11
Petechial haemorrhages in the jejunum of a 4-week-old chicken. © 2019 British Small Animal Veterinary Association
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16.11
Petechial haemorrhages in the jejunum of a 4-week-old chicken.
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16.12
A coccidial oocyst at X40 magnification. © 2019 British Small Animal Veterinary Association
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A coccidial oocyst at X40 magnification.
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An ex-battery hen with oral canker. © 2019 British Small Animal Veterinary Association
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An ex-battery hen with oral canker.
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16.14
An 8-week-old pheasant with Hexamita infestation. © 2019 British Small Animal Veterinary Association
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An 8-week-old pheasant with Hexamita infestation.
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A normal caramel-like caecal dropping. © 2019 British Small Animal Veterinary Association
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A normal caramel-like caecal dropping.
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A normal dropping with a white urate cap. © 2019 British Small Animal Veterinary Association
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16.16
A normal dropping with a white urate cap.
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16.18
The necrotic small intestine and undigested wheat in a 3-week-old Ross chicken with necrotic enteritis. © 2019 British Small Animal Veterinary Association
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16.18
The necrotic small intestine and undigested wheat in a 3-week-old Ross chicken with necrotic enteritis.
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16.19
The haemorrhagic small intestine of an 8-week-old turkey poult with haemorrhagic enteritis. © 2019 British Small Animal Veterinary Association
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16.19
The haemorrhagic small intestine of an 8-week-old turkey poult with haemorrhagic enteritis.
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Frothy yellow droppings caused by rotavirus infection. © 2019 British Small Animal Veterinary Association
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Frothy yellow droppings caused by rotavirus infection.
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The necrotic mucosa of a 6-week-old ducking with duck viral enteritis. © 2019 British Small Animal Veterinary Association
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16.21
The necrotic mucosa of a 6-week-old ducking with duck viral enteritis.
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16.22
Swollen tendons in a 6-week-old backyard chicken with reovirus. © 2019 British Small Animal Veterinary Association
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16.22
Swollen tendons in a 6-week-old backyard chicken with reovirus.
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16.23
Caseous caecal cores caused by Salmonella Arizona infection. © 2019 British Small Animal Veterinary Association
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16.23
Caseous caecal cores caused by Salmonella Arizona infection.
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16.24
The emaciated septicaemic carcass of a 4-year-old backyard hen with fowl typhoid. Note the inflamed liver. © 2019 British Small Animal Veterinary Association
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16.24
The emaciated septicaemic carcass of a 4-year-old backyard hen with fowl typhoid. Note the inflamed liver.
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16.25
The enlarged congested yolk sac in a 4-day-old chick with yolk sac infection. © 2019 British Small Animal Veterinary Association
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16.25
The enlarged congested yolk sac in a 4-day-old chick with yolk sac infection.
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16.26
The bile-stained intestinal contents of a 2-year-old turkey that presented with green diarrhoea due to chlamydiosis. © 2019 British Small Animal Veterinary Association
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16.26
The bile-stained intestinal contents of a 2-year-old turkey that presented with green diarrhoea due to chlamydiosis.
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16.27
Proventricular haemorrhage caused by Newcastle disease. © 2019 British Small Animal Veterinary Association
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16.27
Proventricular haemorrhage caused by Newcastle disease.
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16.28
Intestinal lymphoma in a 6-month-old Maran hen. © 2019 British Small Animal Veterinary Association
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16.28
Intestinal lymphoma in a 6-month-old Maran hen.