Backyard Poultry Diseases Flashcards
Stargazing disease deficiencies
Thiamine/ Vitamin B1 deficiency
Stargazing disease causes
- ascending paralysis
- myelin degeneration
Curled toe paralysis deficiencies
Riboflavin/ vitamin B2
Curled toe paralysis causes
- demyelinating peripheral paralysis
Bacterial diseases (list them; 5)
- e. Coli
- pasteurellosis
- mycoplasmosis
- bordetellosis
- staphylococcosis
Clinical signs of E.coli
- coelomic distension
- air sacculitis
- salpingitis
- ceased egg laying
- respiratory signs
E. Coli in chicks
- spread via fecal contamination of egg
- signs: lethargy, edema, omphalitis, surviving chickens=stunted, dead chicks have retained brown/yellow yolk sac
Dx E. Coli
- bacterial culture
- carcass culture (death <24hrs)
- false negatives if birds have been medicated
Characteristics of pasteurellosis
- gram negative
- high mortality
- low virulence strain: swollen joints & wattles, infraorbital sinusitis, torticollis
- carriers can be asymptomatic
Signs of pasteurellosis
- necrotic lesions on lungs?
- swollen wattles
Mycoplasmosis signs
- cyanotic wattles and comb
- heart murmur
- increased RR effort
- nasal discharge
M. Synoviae signs
- swollen joints
- swollen footpads
- lameness
Dx for mycoplasmosis
- state diagnostic lab b/c require special media
- serologic testing at state lab
Signs of bordetellosis in turkeys
- sneezing
- tracheal rales
- labored breathing
- foaming exudate in eye
Bordetellosis Dx
Tracheal swab culture & serology
Risk factors for pododermatitis (staph infection)
- poultry on wet litter
- ammonia build up from manure
- wire cages & rough surfaces
- malnutrition
Etiologic agent that causes aspergillosis
- aspergillosis fumigatus
Etiologic agent that causes candidiasis
Candida albicans
List 4 viral diseases in psittacines
- marek’s disease/lymphoid leukosis
- infectious bronchitis
- infectious laryngotracheitis
- pox virus
Marek’s virus is a _____ virus
Herpesvirus
Marek’s affects birds at what age?
Usually <14 weeks
Sometimes older
Can vx for marek’s at how old?
1 day
Vx not always protective
Signs of marek’s disease
- stilted, uncoordinated gait
- range paralysis ( take ischiatic n. At necropsy, sciatic n. Involved)
Signs of ocular marek’s
Blue-grey iris color
Skin form of marek’s
White distince nodules of feather follicles
Signs of visceral marek’s
- liver, spleen, heart, kidney, and intestinal enlargement
- indistinguishable from lymphoid leukosis
Lymphoid leukosis
- similar to marek’s
- <14 wks
- no Tx
- caused by a retrovirus
Infectious Bronchitis virus signs
- egg shell quality issues
- resp. signs
Dx for IBV
Serology
Prevention of IBV
-Vx
- serotype depends on locality
IBV Tx
Prevent secondary bacterial infections
Infectious laryngotracheitis is a ____ virus
Herpesvirus
Signs of infectious laryngitis
- coughing
- gasping
- open mouth breathing
- BLOODY MUCOID EXPECTORANT
Dx Infectious laryngotracheitis
- serologic testing
Tx infetious laryngotracheitis
Supportive care, abx for secondary infection
Prevention of infetious laryngeotracheitis
- vx
- only recommended if disease present in geographical area
Poxvirus (cutaneous form)
- unfeathered areas on face and feet
- scabby/crusty lesion
wet form of poxvirus
Plaques in oral cavity
Dx poxvirus
Biopsy of skin w/ crusty parts of lesion
Tx of poxvirus
- prevent secondary infection
- remove oral plaques if severe
