المحاضرات التأهيلية لاختبارات الوظائف الحكومية اليوم الاول

1. CarcaseCarcase
Muscle incised only when c. bovis present in heart or
masseter muscle
Attention should be paid to :
• degree of bleeding
• odours
• discolouration
• bruising
Thoracic and Abdominal cavity→ inflam., abscess, T.B.
Carcase L.ns: T.B.

2. Inspection of calvesInspection of calves
Special attention should be made to:
the mouth & tongue →Foot & Mouth disease and calf
diphtheria
The joints
swelling → septic or pyaemic poly arthritis
→ consistency of synovial fluid
The intestines and stomach
• enteritis → salmonella
• purulent matter → white scour by E.coli

3. Inspection of calvesInspection of calves
Liver& spleen:
T.B. → the mesenteric L.ns
Congenital T.B. → portal L.ns
Umbilicus: Navel ill
Heart: Cysticerci (Visual examination)

4. Inspection of sheepInspection of sheep
The lung : for parasitic infestation, Hydated cysts.
Nematodes→ verminous pneumonia.
The liver: Fascioliasis
The carcase: palpated…… Abscess, arthritis, caseous
lymphadenitis
Brain: Coenurus cerebralis
Spleen: Anthrax
Muscles: C. ovis

5. Stamping of carcassStamping of carcass
• stamping is chiefly a mean for identification .
Aim of stamping
• to indicate that the carcass is wholesome
• to differentiate between animal species
• to differentiate between aged and young animals of
the same species

6. Stamping of carcassStamping of carcass
The impression of the stamps refer to:
• the name of province
• the name of abattoir
• the day of slaughter
• a secret mark
• the kind of meat age and species
• no of slaughter hall
• the ink of staining must be harmless, adhere easily
,stable ,dry Quikley penetrate into the superficial layers of
meat impressions should not be disappeared by washing
pickling or smoking

7. Stamping of carcassStamping of carcass
kind of meat age color
and shape of
stamping
• bovine less than3years red
quadrilateral
• bovine more than 3.5 red
hexagonal
• bovine more than5years red
triangular
• mutton less than3years red
quadrilat

8. Stamping of carcassStamping of carcass
kind of meat age color
and shape of
stamping
• mutton more than3years red
triangular
• camel less than4.5years red
quadrilat
• camel more than5years red
triangular
• goat all ages red
triangular
• pig all ages red
rounded

9. Parasitic Diseases important in MeatParasitic Diseases important in Meat
InspectionInspection
Taenia saginata
C. bovis(Beef Measles)
• Predilection sites are tongue, heart muscle,
massater, diaphragm .Occasionally in liver and
lungs.
Final host is man, intermediate host is bovine(Cattle).Other
wild ruminants are infected.

10. C. bovisC. bovis

11. C. bovisC. bovis

12. C.bovisC.bovis

13. Judgment at meat inspectionJudgment at meat inspection
• Condemn the whole carcass if;
– the infection is excessive i.e. if any muscle you
incise, you find 1 or more cysts or any organ you
incise you find 1 or more cysts.
– The total number of cysts in any muscle or
surrounding tissue or organ exceed 10 just on a
single incision
– 10 or more cyst in a dressed carcass

14. Judgment at meat inspectionJudgment at meat inspection
• When the carcass regarded less number of
cysts
• Conditionally approve if the carcass
– Has 1-9 cysts
– Any part of the carcass has 1 or 2 cysts

15. Echinococcus granulosusEchinococcus granulosus
Hydatid diseaseHydatid disease
• Final host is dog and other carnivorous.
• Intermediate hosts are cattle, ruminants, pigs,
• Man is an accidental intermediate host
• The cystic form is hydatid cyst

16. Hydatid cystsHydatid cysts

17. Hydatid cyst in BrainHydatid cyst in Brain

18. Judgment at PMJudgment at PM
• The shape of cysts depend on shape and size of
organ where the cyst is located.
• It can be spherical and can be very large
• Leading to pressure necrosis.
• Carcass showing emaciation, edema is
condemned and destroyed.
• Affected viscera condemned and destroyed.

19. Taenia HydatigenaTaenia Hydatigena
• Its among the largest tape worms of dogs. The
cystic form is cysticercus tennuicolis found
intermediate hosts which are small
ruminants(goats and sheep) and pigs.
• It is one of the largest cysts up to 7.5 cm with
a long thin neck.
• Predilection sites include the omentum,
mesenteries & liver.

20. taenia hydatigenataenia hydatigena

21. Taenia HydatigenaTaenia Hydatigena
• Judgment
– If infestation is not heavy remove cyst and pass
carcass
– In case of excessive infestation, condemn the
affected organs.
– Man is an accidental host

22. Taenia multicepsTaenia multiceps
• It confined to brain tissue of ruminants
• Can be size of a pea or an egg.
• Can be arrested in liver and die, otherwise reach
brain in 8-14 days leading to CNS signs
• Final host carnivores
• Intermediate hosts- ruminants
• Judgment
– In early cases when there is no emaciation,
condemn the head
– If there is emaciation, condemn the whole carcass

23. FascioliasisFascioliasis
• Caused by Fasciola hepatica, Fasciola
gigantica
• At post mortem, acute lead parachymatous
hepatitis, hemorrhages..
• Bile ducts are thickened, dilated, Bile ducts filled
with yellowish brown bile containing flukes
• Excessive calcification and fibrosis of ducts leads to
liver cirrhosis.
• Migrating flukes may reach other organs like lungs

24. LiverflukeLiverfluke

25. FascioliasisFascioliasis
JudgmentJudgment
• Markedly cirrhotic liver should be
condemned
• Otherwise mildly affected liver can trimmed
and pass the rest
• If emaciation………….. T.C

26. TRICHINELOSISTRICHINELOSIS
• Etiology
– Trichinella spiralis
• Hosts
– All mammals, principally, pigs, man, rats, etc
• Predilection site is Muscles of movement
• Diagnosis
– Trichinoscopy tests .Taking a piece of muscle esp
diaphragm

27. Judgment for TrichenollosisJudgment for Trichenollosis
• Total condemnation of the entire carcass

28. Taenia Solium(PorkTaenia Solium(Pork tape wormtape worm((
Final host is man, intermediate host is pig. Larvae
is picked by the pig
•Active muscles include heart muscle, diaphragm,
massatter muscles, tongue, abdominal muscles,
neck etc.
•This cystic form is know as cysticercus cellulosae.
•The condition is know as cyticercosis. Also
known as pork measles

29. Pork MeaslesPork Measles

30. Cyst in the Peritoneal cavityCyst in the Peritoneal cavity

31. Numerous cysts of C. cellulosae inNumerous cysts of C. cellulosae in
the heart musclesthe heart muscles..

32. T. SoliumT. Solium
Judgment at Meat inspectionJudgment at Meat inspection
• If the total number of cysts is more than 6,
condemn the whole carcass.
• Any organ or head or any part of the pig with 1 or
more cyst should be condemned.