1- Post-mortem inspection Flashcards

1
Q

What is the aims of the post-mortem inspection

A

Supplement Ante-mortem and detect
- Diseases
- Residues (abcesses from injections) or contaminants
- Contamination
- Other -unfit for human consumption.
- Animal welfare

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2
Q

Who carries out the post-mortem

A

Meat health inspectors commonly but OV will can also (unusual conditions/Emergency situations)

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3
Q

If an animal had arthritis in 1 joint what happens?

A

Partial rejection of that joint only, rest of carcass passes.

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4
Q

What LN do you need to check for TB?

A

Retropharyngeal & mesenteric LN

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5
Q

If a cow has Taenia Saginata (C.Bovis) at slaughter what do you do?

A

If local = partial rejection of heart + freezing
Generalised = Total rejection

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6
Q

What happens if bovine TB is suspected in a carcass

A

APHA notified immediately as it is a notifiable disease

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7
Q

T/F rejection of the whole carcass occurs in fasciola hepatica

A

False (only the liver)

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8
Q

What happens if pericarditis is found in the heart

A

Partial rejection of the heart

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9
Q

What happens if endocarditis is found PM

A

If only heart affected- partial rejection
If heart and skin affected- total rejection

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10
Q

If a sheep has Taenia Ovis (C. ovis) at slaughter what do you do?

A

Localised- partial rejection of heart
Generalised- total rejection

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11
Q

What is Hydatidosis?

A

Caused by dog tapeworm = Echinoccus granulisos

Causes cysts located in lungs, liver

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12
Q

What pathological feature is seen in ascaris suum?

A

Milk spot on the liver

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13
Q

What happens if pneumonia seen PM

A

Partial rejection

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14
Q

Describe a control program for hydatidosis

A

Educate public.
Treat dogs (praziquantel).
Control access by dog to offal.
Good meat inspection => condemn offal

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15
Q

What happens if Milk spot seen in liver

A

Partial rejection of liver

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16
Q

What happens if peritonitis is seen PM

A

Depends on severity to if full or partial rejection

17
Q

List some reasons for full carcase condemnation

A

Emaciation
Jaundice
Fevered (Septicaemia/Toxaemia)
DOA, DIL, Unborn Or under 7 days
Generalised Oedema
Pyemia- lots of abscesses around the carcass???
Abnormal odours (uraemia, acetonemia)
No ante-mortem

18
Q

List some signs seen in emaciated carcases

A

Shrunken
pale/ wet muscles
slimy/ gelatinous
Lymph nodes enlarged/watery

19
Q

What is melanosis? & is the carcass passed at slaughter?

A

Increased melanin in tissues

Partial rejection of affected tissue

20
Q

Who does the health marks

A
  • OV
    • MHI- generally them
    • FBO
      Always done under supervision of OV
21
Q

What is the procedure that is followed when performing a PM

A

Take in to account AM
View all external surfaces
Look for any evidence of notifiable/zoonotic diseases
Take into account FCI- mostly in poultry
Must include carcases and accompanying offal

22
Q

If there is no evidence of generalised disease or recent medication, what happens

A

The carcase is passed for human consumption

23
Q

If during PM there is evidence of recent meds, what happens

A

Test for residues
-Passed for human consumption if neg
- Condemn carcass if positive

24
Q

If there is evidence of localised disease condition at PM, what is the next step and the outcome

A

Remove affect tissue
Rest passed for human consumption

25
List 4 reasons for total rejection of cow carcase
Oedema/ emaciation Generalised TB pyaemia/ multiple abcesses Septicaemia/ fever Hydatidosis Jaundice Navel ill Abnormal odour Cysticercus bovis- in multiple locations Contamination
26
List 4 reasons for total rejection of sheep carcase
Septicaemia/ fever Jaundice contamination Cysticercus ovis- generalised Hydatidosis Emaciation/ generalised oedema multiple abscess generalised tuberculosis polyarthritis contamination
27
What additional inspections are requires if bovine TB is suspected
the prescapular and superficial inguinal lymph node must be inspected
28
What 4 things could cause lungs to be rejected at PM
pneumonia pleurisy lungworm abscesses
29
What is another name for Distomatosis
Liver fluke- caused by Fasciola hepatica
30
What 3 things do you take samples to test for at the abattoir
Aujezsky's disease Residues Trichinella
31
What is the procedure for testing for Trichinella
Breeding pigs, all wild boars testing of muscle tissue condemn carcase until passed test