All things chickens

Question 1

Aegyptianellosis

Answer 1

Acute, tick-borne, fibrile disease caused by Aegyptianella spp, a riskettsia int eh family Anaplasmatacaea.

Question 2

Isosporiasis/Atoxoplasma

Answer 2

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

Question 3

Filariasis

Answer 3

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

Question 4

Haemoproteus infections

Answer 4

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.

Question 5

Leucocytozoonosis

Answer 5

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

Question 6

Plasmodium

Answer 6

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.

Question 7

Chicken Anemia Virus

Answer 7

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.

Question 8

Dissecting aneurysm in Turkey

Answer 8

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

Question 9

Inclusion body hepatitis/hypdropericardium syndrome

Answer 9

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.

Question 10

Perirenal hemorrhage syndrome (PHS) of turkeys

Answer 10

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.

Question 11

Spontaneous cardiomyopathy of turkeys (round heart disease)

Answer 11

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.

Question 12

Candidiasis

Answer 12

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.

Question 13

Coccidiosis

Answer 13

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)

Question 14

Coronaviral enteritis of turkeys

Answer 14

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