Backyard Poultry Diseases

Question 1

Stargazing disease deficiencies

Answer 1

Thiamine/ Vitamin B1 deficiency

Question 2

Stargazing disease causes

Answer 2

• ascending paralysis
• myelin degeneration

Question 3

Curled toe paralysis deficiencies

Answer 3

Riboflavin/ vitamin B2

Question 4

Curled toe paralysis causes

Answer 4

• demyelinating peripheral paralysis

Question 5

Bacterial diseases (list them; 5)

Answer 5

• e. Coli
• pasteurellosis
• mycoplasmosis
• bordetellosis
• staphylococcosis

Question 6

Clinical signs of E.coli

Answer 6

• coelomic distension
• air sacculitis
• salpingitis
• ceased egg laying
• respiratory signs

Question 7

E. Coli in chicks

Answer 7

• spread via fecal contamination of egg
• signs: lethargy, edema, omphalitis, surviving chickens=stunted, dead chicks have retained brown/yellow yolk sac

Question 8

Dx E. Coli

Answer 8

• bacterial culture
• carcass culture (death <24hrs)
• false negatives if birds have been medicated

Question 9

Characteristics of pasteurellosis

Answer 9

• gram negative
• high mortality
• low virulence strain: swollen joints & wattles, infraorbital sinusitis, torticollis
• carriers can be asymptomatic

Question 10

Signs of pasteurellosis

Answer 10

• necrotic lesions on lungs?
• swollen wattles

Question 11

Mycoplasmosis signs

Answer 11

• cyanotic wattles and comb
• heart murmur
• increased RR effort
• nasal discharge

Question 12

M. Synoviae signs

Answer 12

• swollen joints
• swollen footpads
• lameness

Question 13

Dx for mycoplasmosis

Answer 13

• state diagnostic lab b/c require special media
• serologic testing at state lab

Question 14

Signs of bordetellosis in turkeys

Answer 14

• sneezing
• tracheal rales
• labored breathing
• foaming exudate in eye

Question 15

Bordetellosis Dx

Answer 15

Tracheal swab culture & serology

Question 16

Risk factors for pododermatitis (staph infection)

Answer 16

• poultry on wet litter
• ammonia build up from manure
• wire cages & rough surfaces
• malnutrition

Question 17

Etiologic agent that causes aspergillosis

Answer 17

• aspergillosis fumigatus

Question 18

Etiologic agent that causes candidiasis

Answer 18

Candida albicans

Question 19

List 4 viral diseases in psittacines

Answer 19

• marek’s disease/lymphoid leukosis
• infectious bronchitis
• infectious laryngotracheitis
• pox virus

Question 20

Marek’s virus is a _____ virus

Answer 20

Herpesvirus

Question 21

Marek’s affects birds at what age?

Answer 21

Usually <14 weeks

Sometimes older

Question 22

Can vx for marek’s at how old?

Answer 22

1 day

Vx not always protective

Question 23

Signs of marek’s disease

Answer 23

• stilted, uncoordinated gait
• range paralysis ( take ischiatic n. At necropsy, sciatic n. Involved)

Question 24

Signs of ocular marek’s

Answer 24

Blue-grey iris color

Question 25

Skin form of marek’s

Answer 25

White distince nodules of feather follicles

Question 26

Signs of visceral marek’s

Answer 26

- liver, spleen, heart, kidney, and intestinal enlargement - indistinguishable from lymphoid leukosis

Question 27

Lymphoid leukosis

Answer 27

- similar to marek’s - <14 wks - no Tx - caused by a retrovirus

Question 28

Infectious Bronchitis virus signs

Answer 28

- egg shell quality issues - resp. signs

Question 29

Dx for IBV

Answer 29

Serology

Question 30

Prevention of IBV

Answer 30

-Vx - serotype depends on locality

Question 31

IBV Tx

Answer 31

Prevent secondary bacterial infections

Question 32

Infectious laryngotracheitis is a ____ virus

Answer 32

Herpesvirus

Question 33

Signs of infectious laryngitis

Answer 33

- coughing - gasping - open mouth breathing - BLOODY MUCOID EXPECTORANT

Question 34

Dx Infectious laryngotracheitis

Answer 34

- serologic testing

Question 35

Tx infetious laryngotracheitis

Answer 35

Supportive care, abx for secondary infection

Question 36

Prevention of infetious laryngeotracheitis

Answer 36

- vx - only recommended if disease present in geographical area

Question 37

Poxvirus (cutaneous form)

Answer 37

- unfeathered areas on face and feet - scabby/crusty lesion

Question 38

wet form of poxvirus

Answer 38

Plaques in oral cavity

Question 39

Dx poxvirus

Answer 39

Biopsy of skin w/ crusty parts of lesion

Question 40

Tx of poxvirus

Answer 40

- prevent secondary infection - remove oral plaques if severe