Red meat inspection

Question 1

Give examples of generalised conditions that make meat unfit for human consumption

Answer 1

Septicaemia
Pyaemia
Jaundice
Emaciation
Viraemia
Malignant tumours (sporadic bovine lymphosarcoma)
(Toxaemia - depending on boiling/frying test)

Question 2

What is the most common malignancy in cattle?

Answer 2

Sporadic bovine lymphosarcoma

Question 3

What age cattle does sporadic bovine lymph affect?

Answer 3

6 months - 2 yrs

Question 4

What are the 2 forms of sporadic bovine lymphosarcoma

Answer 4

Multicentric (LNs)

Thymic (cardiac and cervical thymus)

Question 5

What should be done if an animal at a slaughterhouse is suspected to have toxaemia?

Answer 5

Hold carcass for 24 hrs

Check by boiling/frying test - if smell still present, unfit for human consumption

Question 6

Is Erysipelothrix rhusipathiae zoonotic or notifiable?

Answer 6

Zoonotic

Not notifiable

Question 7

Mild Erysipelothrix rhusiopathiae causes diamond shape lesions on the skin and possible bacteraemia. What causes these changes?

Answer 7

Necrosis/infarction

Question 8

Are pigs with Erysipelothrix patrias accepted or rejected at the slaughterhouse?

Answer 8

If acute or septicaemia - total rejection

If mild or chronic - local or total rejection depending on severity and extensions of lesions

Question 9

What are 2 possible causes of orange pigment of a carcass?

Answer 9

Jaundice - hyperbilirubinaemia

Carotenosis - icncreased XS/dietary carotenoids

Question 10

Is an animal with jaundice fit for human consumption?

Answer 10

No