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Digestive: Viral Dss (part 1) Flashcards

1
Q

Viral diseases

A
  1. Inclusion body hepatitis
  2. Malabsorption syndrome
  3. Other viral enteritic infections
    a. Hemorrhagic enteritis
    b. Turkey Coronavirus Enteritis
    c. Rotavirus infection
  4. Viral infection of Waterfowl
    a. Duck hepatitis
    b. Duck virus enteritis
    c.Hemorrhagic nephritis and enteritis of.
    geese
  5. Goose parvovirus infection/Derzy’s disease
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2
Q

Inclusion body hepatitis etiologic agent

A

Avian adenovirus

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3
Q
A
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4
Q

Disease o young chickens
-hemorrhages
-pale bone marrow
- anemia
- depression

A

Inclusion body hepatitis

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5
Q

Sudden onset of mortality peaking in 3-4 days and continuing for 2-3 weeks

A

Inclusion body hepatitis

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6
Q

Inclusion body hepatitis incubation period

A

24-48 hours

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7
Q

Low morbidity,
MT reaches 25% over a 2 week period (course of disease)

A

Inclusion body hepatitis

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8
Q

Normally seen in meat producing birds at 3-7 weeks

A

Inclusion body hepatitis

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9
Q

Could occur in younger and older birds (breeder flock)

A

Inclusion body hepatitis

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10
Q

Inclusion body hepatitis transmission

A

Horizontal and vertical transmision

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11
Q

-Pale carcass, punctuate hemorrhages on breast muscles
-Swollen liver w/ subcapsular speckled hemorrhages and necrotic foci (punctuate not stellate)
-Anemia due to degeneration of bone marrow (pale on necropsy)

A

Inclusion body hepatitis

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12
Q

Inclusion body hepatitis diagnosis:

A

-Clinical signs and lesions
-Pathognomonic: demonstration of basophilic inclusion bodies of hepatocytes
-Isolated by inoculation in SPF (specified pathogen free) embryos or eggs with liver homogenates

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13
Q

Cowdry type A inclusion bodies in nucleus

A

Inclusion body hepatitis diagnosis: Pathognomonic

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14
Q

Inclusion body hepatitis tx and prevention

A

-Antibiotics to prevent bacterial infection
-Obtain stocks from IBD-vaccinated flocks
-Contaminated poultry house should be disinfected with compounds
-Vaccination

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15
Q

Tx: little value because self limiting (2weeks)

A

Inclusion body hepatitis

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16
Q

Inclusion body hepatitis:
Contaminated poultry houses should be disinfected with _________________

A

with iodine-containing compounds for NaOCl (sodium hypochloride)

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17
Q

Running/stunting syndrome

A

Malabsorption syndrome

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18
Q

Malabsorption syndrome etiologic agent

A

Avian Reovirus

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19
Q

Helicopter wing syndrome

A

Malabsorption syndrome

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20
Q

Infectious proventriculus

A

Malabsorption syndrome

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21
Q

Pale bird disease

A

Malabsorption syndrome

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22
Q

Brittle bone disease

A

Malabsorption syndrome

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23
Q

Seen in birds 6 weeks
also in chicks 7-14 days after hatching

A

Malabsorption syndrome

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24
Q

Malabsorption syndrome
Mortality
Morbidity

A

Mt: 2-10%
Mb: 5-50%

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25
Poor FCR Uneven growth rates Reduced marketability of affected birds
Feed Efficiency and Rate of Gain Decreases in Malabsorption Syndrome
26
Malabsorption syndrome transmission
Horizontal and vertical transmission
27
Undigested feeds in feces
Malabsorption syndrome
28
Seen in bilateral swelling of shanks and above the hocks: birds walk with stilted gaits
Malabsorption syndrome: Tenosynovitis in 4-8 weeks old
29
Lesions: GIT- atrophy if villi, proventriculus gizzard, enteritis Arthritis- myocarditis, encephalimalacia, hepatitis, osteoporosis, pancreatitis
Malabsorption syndrome
30
Malabsorption syndrome diagnosis
-Test: AGPT (agar gel precipitation test), virus neutralization test to detect specific serotypes -Isolated: inoculate GIT homogenates from infected chicks into embryonated chicken eggs 5-7 days old
31
Malabsorption syndrome prevention and control
-strict sanitation -vaccinate day old chicks -vaccinate breeder flocks to transmit passive immunity
32
Etiologic agent for hemorrhagic enteritis
Type II Avian Adenovirus
33
Causes marble disease in pheasants
Hemorrhagic enteritis
34
Acute viral dss of turkeys 4 weeks and older
Hemorrhagic enteritis
35
Hemorrhagic enteritis natural host
Turkeys, pheasants, chickens
36
Financial losses+ immunosuppression and subsequent secondary bacterial infection
Hemorrhagic enteritis
37
Rapid onset progression of clinical signs over 24 hrs period (acute onset)
Hemorrhagic enteritis
38
Hemorrhagic enteritis transmission
Feco-oral route (horizontal)
39
-Depression, melena, bloody droppings, death in 24 hrs of recovery -Respiratory compromise: progressive dyspnea
Hemorrhagic enteritis
40
Post mortem lesions: pale carcass in good condition
Hemorrhagic enteritis
41
Pheasants: enlarged, mottled (marbled) spleen and edematous congested lungs
Hemorrhagic enteritis
42
Friable spleen
Hemorrhagic enteritis
43
Congested lungs, enlarged livers with petechial hemorrhages
Hemorrhagic enteritis
44
Hemorrhagic enteritis diagnosis
-Isolation and ID (identification) of virus -Serology: AGPT, ELISA
45
Hemorrhagic enteritis differential diagnosis
-Reticuloenotheliosis of lymphoproliferative -Bacterial septicemic diseases
46
Tx for hemorrhagic enteritis
-Convamescent antiserum 0.5-1ml -Antibiotics for secondary bacterial infection
47
Control and prevention for hemorrhagic enteritis
-Good biosecurity -Vaccination
48
Bluecomb disease
Turkey coronavirus enteritis
49
Mud fever Transmissible enteritis Coronaviral enteritis
Turkey coronavirus enteritis
50
Etiologic agent for turkey coronavirus eneteritis
Group 3 Coronavirus
51
Acute highly contagious dss of turkeys
Turkey coronavirus enetritis
52
Incubation period of bluecomb dss
1-5 days (ave. 2-3 days)
53
Shed in feces for several weeks after recovery from clinical disease
Bluecomb dss
54
Sudden onset of clinical signs with high MB
Bluecomb dss
55
Bluecomb dss transmission
Feco-oral route (horizontal)
56
-decrease water consumption -Watery diarrhea, dehydration, hypothermia, weight loss - droppings: green to brown, watery, frothy with mucus and urates
Bluecomb dss
57
Lx in intestine and bursa of fabricious
Bluecomb dss
58
-Duodenum and ileum are pale and flaccid -Ceca distended and filled with watery content
Bluecomb disease
59
Bluecomb disease diagnosis
-virus isolation -FAT, RT-PCR -Serology
60
Bluecomb disease: Tx and prevention
-antibiotics for secondary bacterial infection -biosecurity measures -thorough cleaning and disinfection -Depopulation -Downtime for min of 3-4 weeks
61
62
Major dss of young ducklings
Duck hepatitis
63
Etiologic agent for duck hepatitis
Duck hepatitis types 1,2,3
64
Economic importance to all duck growing farms
Duck hepatitis
65
Highly fatal, rapidly spreading viral infection
Duck hepatitis

Poultry Digestive (5 decks)

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