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31 Cards in this Set
- Front
- Back
You are carrying out inspection of the cheek muscles of a cow and spot there white, calcified lesions. What is this likely to be caused by? Name of condition? |
Cysticercus bovis. Intermediate stage of the human tape work :Taenia saginata. Often found at PM in the cheek or diaphragm. |
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C. Bovis cyst in heart. |
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How can humans become infected with T. saginata tapeworms? |
Eating raw of undercooked beef. |
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If the entire carcass has cysticercus bovis cysts present what happens to it ? If its more localized what occurs? |
It is declared unfit for human consumption and disposed of. More localized lesion just trim away the affected portion and cold storage. |
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To diagnose C.bovis at PM what criteria must we fill? |
1) Need more than one viable cysts.- if generalized total rejection. 2) If just one cyst found- local rejection and cold storage of remaining. 3) If we find more than one non viable cysts- Local rejection- release rest of offal/carcase |
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We cut into a big and find all these cysts? Likely causative agent? What is out judgement on the fitness of this carcass for human consumption? |
Cysticercus Cellulosae. Rejection of whole carcase usually |
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We find a sheep heart with a cyst on it at PM? Likely causative agent? Judgement on this carcasse for human consumption? |
Cysticercus ovis. Not zoonotic. Larval form of Taenia ovis. Local rejection of heart. |
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Diagnosis? Judgment? |
Liver with large granulomatous lesions- Diagnosis TB.
Local rejection of liver and lymph nodes |
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The OV has taken a sample of a pigs muscle and found these lesions, name them? Judgement? |
Trichinella spiralis. Rejection and unfit for human consumption. |
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When assessing the head and throat of an animal what are we looking for in terms of disease processes? |
1) Osteomyelitis- Local rejection. 2) Actinobacillosis 3) Actinomycosis 4) Oral ulceration. 5) Caseous lymphadenitis. |
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Jugdement? |
Osteomyelitis of the mandible Local rejection. |
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Judgement? |
Wooden tongue lesions- actinobacillosis infection. Local rejection. Check oesophagus, lungs and rumen for secondary infection. |
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Judgement? |
Actinomycosis- lumpy jaw. Local condemnation. |
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Judgement? |
FMD Notifiable disease!!!!!!!!!!!! |
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What is the cause of most localized oral ulcers? |
Trauma which results in localized rejection. |
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Sheep lungs with these lesions? Judgement? |
Likely muellerius capillarus. Local rejection. |
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What is shown here? Judgement? |
Endocarditis. Total rejection. These disgusting little vegetative masses can fall off and go into the blood stream as emboli and seed other organs. |
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You open a cow that has a heart looking like this? Diagnosis and judgement? |
Gangrenous pericarditis- pericardium contains foul smelling pus and also fibrin etc. Total rejection!! Complication of traumatic reticulitis. |
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If we have liver abscesses what will happen to the carcass? |
Local rejection providing no other septic complications |
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What happens to a liver with fasciola hepatica? Judgement at PM? |
Local rejection. Scarring, calcified thickened bile ducts |
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What is condition is shown here? Judgement at PM? |
Hydatidosis in a bovine heart. These are the intermediate stage of echinococcus granulosa. Local rejection of that heart. |
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You look at a sheep liver and find all these grim balloon like pedunculated structures. What parasite is the likely cause of these? Judgement? |
Cysticerus tenuicollis. The larval farm of taenia hydatigena. Local rejection. If severe and generalized total. |
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You open an emaciated cow and find this pathology in the GIT? Judgement? |
Johnes. Because its emaciated TOTAL REJECTION. If not emaciated local rejection. |
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If we have any form of spleen pathology what happens to the carcasse? Why? |
Total rejection!! Its a clear sign of generalized inflammation. |
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Cow presents to you with generalized peritonitis? Judgement? |
Total rejection. |
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What happens to kidneys with local nephritis? |
Local rejection. |
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Judgement on a case of pyelonephritis? |
If the kidneys just affected local. If systemic or uraemia- Total rejection. |
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Signs of septicaemia at post mortem? |
1) Congestion leading to Poor bleeding as a consequence of generalized infection. 2)Echymotic and petechial haemmorhage in LN and internal organs. 3) Degenerative change in kidneys and liver. 4)Infarcts in kidney and spleen. |
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If we have a septicaemic carcass what happens to it? |
Totally rejected. |
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What happens to carcasses with evidence of toxaemia? |
Totally rejected. |
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What systemic conditions lead to total rejection of a carcass? |
Septicaemia. Toxiaemia. Pyaemia. Viraemia- Malignant catarrhal fever, IBR. Oedema. Emaciation. Anaemia |
