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Flashcards in All things chickens Deck (14)
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Acute, tick-borne, fibrile disease caused by Aegyptianella spp, a riskettsia int eh family Anaplasmatacaea.



Coccidia with intra- and extra-intestinal forms. Isospora is a disease of passerine birds. Fecal-oral transmission



Rare in poultry, except southeast asia, common in wild birds. Bloodsucking insects are intermediate host. Treat with ivermectin, fenbendizole, levaminsole, or surgical removal.


Haemoproteus infections

Most common blood parasite in bird, esp. wild birds. 120 species reported. Rare in domestic flocks likely due to vector control (Culicoides spp and hippoboscid flies) Often non-pathogenic.



Often subclinical, occasionally clinical to fatal disease. Dependent on strain of parasite. Treatment usually no effective.



Not species specific. 35+ species. P gallinaceum, P juxtanucleare, and P durae are the moth pathogenic in poultry. meakness, lassitude, dyspnea, anemia, abdominal distention, increased right heart weight, ocular hemorrhage, biliverdiunuria and death. Treatment variably effective with Chloroquine experimentally, or trimethoprim and sulfaquinoxaline in feed for 5 days.


Chicken Anemia Virus

Circociridae family, Fecal-oral transmission and vertical transmission from eggs hatched from viremic hens and roosters spreading through CAV shedding in semen. Vaccination of seronegative flocks before start of egg production.


Dissecting aneurysm in Turkey

(Aortic rupture, internal hemorrhage) Characterized by sudden death of rapidly growing birds with massive internal hemorrhage. Cause unknown. No known treatment.


Inclusion body hepatitis/hypdropericardium syndrome

Aviadenovirus - More severe cases with immunosuppressed chickens. No treatment. Vaccine not commercially available. Sudden mortality in chicks <6 wks. Transudate in pericardial sac, enlarged/pale/friable liver.


Perirenal hemorrhage syndrome (PHS) of turkeys

Noninfectious cardiovascular disorder. Usually in rapidly growing male turkeys 8-15 wks old. low mortality, no morbidity. Pathogenesis unknown. Acute congestive heart failure secondary to hypertrophy.


Spontaneous cardiomyopathy of turkeys (round heart disease)

Sudden death in young turkeys due to cardiac arrest and is not related to other cardiomyopathies of poultry. Exact etiology unknown. May show labored gasping breathing before death.



Thrush, crop mycosis, sour crop. Mycotic disease of the digestive tract of various avian species. lesions most frequently found in croup and consist of thickened mucosa and whitish, raised pseudomembranes. Improve sanitation and minimize antibiotic use.



Caused by protozoa Eimerridae, Large numbers ingested to cause disease. fecal oral transmission. Oocytes must sporulate to become infections (warm moist environment). Decreased growth rates to high mortality, blood with ceca and in droppings. Vaccinated birds infect later flocks, preventative treatment used (Amprolioum)


Coronaviral enteritis of turkeys

(Bluecomb, mud fever, transmissible enteritis) Coronaviral enteritis. Acute, highly contagious. decreased weight gain in adults. SI pale and flaccid, no vaccine - hygiene.