Poultry diseases summary Flashcards

1
Q

How is Avian influenza diagnosed?

A

PCR or virus isolation in eggs

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2
Q

Is Avian influenza zoonotic?

A

Yes but mildly

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3
Q

What disease causes cyanosis of the wattle, comb and shanks, a decreased egg production and tracheal, intestinal and mesenteric haemorrhages?

A

Avian influenza

Blackhead/histomonas also causes cyanosis but with severe enterohepatitis

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4
Q

What disease causes serous ocular nasal discharge, frothy eyes, conjunctivitis and a swollen head?

A

Avian metapneumovirus

Avian rhinotracheitis

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5
Q

What disease causes hepatic necrosis and drop in egg production? This disease may be subclinical, but causes a spotty liver on PME

A

Campylobacter

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6
Q

Why may you be hesitant to use antibiotics for a bird with Campylobacter?

A

Significant egg withhold

Antibiotics (erythromycin, fluoroquinolones reserved for human Campy)

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7
Q

What disease causes immunosuppression, haemorrhage and anaemia in young chickens (<20d) chickens?

A

Chicken anaemia virus

circovirus

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8
Q

What disease causes immunosuppression, depression and haemorrhage in chickens <17 weeks old?

A

Infectious bursal disease

IBD, Gumboro

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9
Q

What disease causes splayed legs, with nerve swellings or tumours? Presentations may be neurological visceral, cutaneous or ocular

A

Marek’s

Herpes - excreted by feather follicles and inhaled

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10
Q

What disease causes respiratory diseases, arthritis and swollen joints and airsacculitis?

A

Mycoplasmosis

‘Fried egg’ on microscopy

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11
Q

What disease causes loss of appetite, abnormal thirst, dehydration, emaciation, ruffling feathers, huddling and depression?

A

Newcastle disease

(Paramyxovirus) NOTIFIABLE, ZOONOTIC

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12
Q

Avian Influenza and Newcastle disease are both notifiable. Do they both undergo antigenetic shift and drift?

A

Influenza - both
Newcastle disease - drift only
Both zoonotic

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13
Q

What disease causes neurological signs such as torticollis, with recovery leading to chronic polyuria in pigeons?

A

Pigeon paramyxovirus

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14
Q

What disease may be subclinical or may cause enteritis, anorexia, dehydration and septicaemia?

A

Salmonellosis

young chicks more susceptible

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15
Q

What pathogen causes Canker in pigeons and other birds, and how is it spread?

A
Trichomonas gallinae (protozoa)
Spread via crop milk
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16
Q

How is canker in brds treated?

A

Carmidazole, ronidazole, dimetridazole

17
Q

What disease causes an enlarged liver, fatty kidneys, haemorrhages and a septicaemic carcass in ducks?

A

Duck viral hepatitis

18
Q

What disease in birds causes gasping?

A

Aspergillus fumigatus

19
Q

A bird has cellulitis. Is this bird fit for human consumption?

A

Dry cellulitis - partial carcass rejection

Wet cellulitis - total rejection

20
Q

What age are female and male turkeys slaughtered?

A

Females 12-15 weeks (5.5kg)

Males 18-21 weeks (18kg)

21
Q

What is the treatment for scaly leg mites (Knemidocoptes mutans)?

A

Topical surgical spirit

22
Q

What is a blood spot vs a meat spot in an egg?

A

Blood spot - ruptured ovarian blood vessel

Meat spot - oviduct tissue

23
Q

Where should IM injections never be given in chickens?

A

Legs - affects motility

24
Q

What ectoparasite in chickens causes ‘white dust’ and anaemia?

A

Red poultry mite

Dermanyssus gallinae

25
Q

What disease causes severe enterohepatitis and cyanosis of the comb and wattle?

A

Histomonas meleagridis

Blackhead

26
Q

Where are Capillaria spp of worms found?

A

Crop, oesophagus and stomach

27
Q

Where is the poultry gape worm found?

A

Synagmus trachea

In trachea

28
Q

Where is Ascaridia galli found?

A

Small intestine

29
Q

Where is Heterakis gallinarum found?

A

Caecum

30
Q

What 4 major factors influence hatchability?

A

Temperature
Humidity
Ventilation
Microbial contamination of egg shell

31
Q

What factors affect uniformity of birds?

A
Water supply/deprivation
Feed management
Lighting
Stocking density
Ventilation
Achieving good chick quality