Meat Inspection II Flashcards Preview

RUSVM Epidemiology > Meat Inspection II > Flashcards

Flashcards in Meat Inspection II Deck (39)
1

postmortem inspection

ASAP after carcass dressing
consumer safety first priority
disease surveillance important
Disposition depends upon severity of disease, whether or not disease is reportable, level of zoonotic risk, and aesthetic value

2

methods for PM inspection

sight
feel
smell
hearing

3

sight

observing a disease lesion (abscess, tumor)

4

feel

palpating (feel abnormal lump, firmness of organ)

5

smell

urine odor (uremia), broken abscess

6

hearing

listen to carcass hit the floor

7

lymph nodes

primary importance in organoleptic detection of disease is the lymphatic system
diseased organisms or toxins begin to spread around the body, the lymph nodes are among the first tissues to become visibly affected

8

PM inspection steps involved:

head inspection
viscera inspection
carcass inspection

9

head inspection

masseter muscle-slice
lymph nodes- incised
tongue- palpated

10

viscera inspection

heart-cut into left ventricle
lungs- palpate and incise 3 mediastinal nodes and tracheobronchial nodes
liver- hepatic nodes incised, open bile ducts, palpate all surfaces
digestive tract
mesenteric LN
palpate rumino-reticular junction (hardware)
observe all other organs

11

carcass inspection

Observe back, sides, pleura, peritoneum, cut surfaces of carcass, and neck muscles
Palpate internal iliac and superficial inguinal or supramammary lymph nodes
Observe and palpate kidneys
Observe and palpate diaphragm

12

SRM

Specified Risk Material
defined as "inedible"
classified based upon risk of BSE transmission to humans

13

what are classified as SRM

All ages: tonsils and distal ileum
If >30 mos, also:
– Brain, skull, eyes
– Trigeminal ganglia
– Spinal cord
– Vertebral column (most of it)
– Dorsal root ganglia

14

generally unfit for food it contains...

Infectious agent or toxins
Morbid tissue
Discolored tissue
Abnormalities involving several organs (Inflammation, degeneration, neoplasia)
Evidence of abnormal systemic physiological states (fever, ketosis, etc.)

15

true/false: carcasses with signs of systemic disease are condemned

true

16

trimming

permitted when there is local involvement with diseases not transmissible to humans

17

passed with restrictions

risk is minor and can be mitigated by cooking, freezing, etc.

18

condemned if liver is...

Abscesses
Fasciolosis
Cirrhosis
Contamination with dirt, feces
Hydatid cyst, Echinococcus granulosus

19

true/false: fatty liver may be passes for food

true

20

true/false: parasitic scars are not passed even after trimming

false: may be passed after trimming

21

tuberculosis

TB reactors require extended postmortem exam
Entire carcass is condemned if there are lesions that are active, extensive, or in multiple tissues

22

carcass with tuberculosis can be passed with restrictions (cooking) if...

All lesions are localized and encapsulated/calcified
Cattle are TB reactors but free of lesions

23

taenia saginata

localized lesions: trim + restricted
extensive lesions: condemned

24

taenia solium

almost always generalized: carcass condemned

25

neoplasia

Epithelioma: SCC, extensive: condemned, localized: condemn head and tongue but rest may be passed
malignant neoplasia: condemned
embryonal nephroma- benign (swine) tim affected parts

26

true/false: SCC is a leading cause of PM condemnation

true

27

pigmentation changes/ discoloration

melanosis: not excessive trim and pass; icterus- condemn

28

bruises

localized- trim
associated with systemic change- condemn

29

emaciation

condemn

30

PPIA

poultry products inspection act
requires inspection of poultry and poultry products

31

PPIA exemptions

Slaughter and processing for personal use
Retail dealers that only cut up chicken carcasses into parts and sell to consumers
Farmers who raise

32

transporting poultry

Transported in crates
Highly susceptible to suffocation
Poultry can freeze to death or overheat
Chickens and turkeys – transport increases fecal excretion of Salmonella

33

antemortem inspection of poultry

Poultry are inspected as “lots” – all of the birds from one poultry house on one farm
Poultry are viewed in the coops
All birds arriving dead = condemned!
Suspect birds are segregated and slaughtered separately

34

symptoms seen on antemortem inspection f poultry

Swelling about the head and eyes
Edema of the wattles
Gasping and sneezing
Off‐colored feces
Diarrhea
Skin lesions
Lameness or fractures
Torticollis (e.g., wry neck)
Bone or joint enlargement

35

poultry processing

Only healthy birds should be processed
Care taken when removing digestive organs
Eviscerated carcasses chilled ASAP
Personnel hygiene and constant cleaning of equipment is vital

36

steps in poultry processing

Live poultry are hung by the legs
Stunning by electricity
Throat is immediately cut (by machine)
Scalded to remove feathers

37

further processing of poultry

Head and feet are removed and discarded
Evisceration is usually done by machines
Veterinary inspection is required prior to any further processing
edible vs inedible organs sorted
spray washing of carcasses
chilled immediately after processing

38

true/false PM inspection is required in poultry

true

39

poultry specific diseases

Chlamydia psittaci
Mycobacterium avium (“TB”) – condemn
Leukosis complex- Mareks, condemn
Airsacculitis – condemn if extensive