Red meat inspection + gross pathology Flashcards
1
Q
What are generalised conditions that make meat unfit for human consumption?
A
- Septicaemia
- Pyaemia
- Jaundice
- Emaciation
- Toxaemia
- Viraemia
- Malignant tumours
2
Q
What should be done with red meat inspection?
A
- Visual
- Palpation
- Incision
3
Q
What are meat inspection aims?
A
- For assessment of pathology
- Presence of SRM
- Contamination of SRM / faeces
- Gross pathology
- Evidence for residues or contaminants
4
Q
What should be inspected?
A
- Incision of lymph nodes, heart, masseters, bile ducts, kidneys
- Palpation of lungs, spleen, liver
5
Q
How can trichinella spirialis be inactivated?
A
- Freezing
- Cooking
6
Q
What is seen in cases of toxaemia grossly?
A
- Uraemia with severe pyelonephritis
- Ketosis with fatty changes in the liver
7
Q
What should be done with risk of toxaemia?
A
- Hold carcase for 24hrs + check by boiling / frying test
- Unfit for human consumption if smell still present
8
Q
What can cause viraemia? What will be seen?
A
- Bovine pestivirus (BVD / mucosal disease)
- ulcerated oesophagus, base of tongue + soft palate
- If seen = unfit for human consumption
9
Q
What is the commonest malignancy of cattle?
A
- Sporadic bovine lymphosarcoma
- if seen = unfit for human consumption
10
Q
What are the different types of erysipelothrix rhusiopathiae infections?
A
- Mild type = diamonds visible on skin, possible bacteraemia
- judgement = depending on lesions
- Acute / septicaemic =
- judgement = total rejection
- Chronic = arthritis, endocarditis, enlarged lymph nodes =
- judgement = local / total rejection depending on severity + extension of lesions
11
Q
What are Ddx for jaundice?
A
- Deficient exsanguination = septicaemia = unfit for human consumption
- Jaundice = unfit for human consumption
12
Q
What should be done with vertebral porphyria / haemochromatosis?
A
Partial rejection
13
Q
What is a Ddx for white muslce disease?
A
- Anaemia = unfit for human consumption
- White muscle disease - unfit for human consumption
14
Q
What should be done with hydrocachexia?
A
- Emaciation with serous atrophy of adipose tissue = unfit for human consumption
15
Q
What should be done with callus formation following fracture?
A
- Partial rejection if no evidence of septicaemia
