Post Mortem Flashcards
(30 cards)
What are the 4 post mortem procedures? Why do you need to go through each one
Visual Exam- lesions
Olfaction–acetone/uremic smells
Palpation-abscesses/neoplasia
Incisional-LN
What are the 3 regions of the body inspected and what on each other those and why?
Head-epitheliomas, actino’s, abscesses, LN, masseter muscle (cysticersosis, eosinophillic myositis), Tongue-FB actino
Viscera- Ln, esophagus, spleen, “pluck”, abdominal viscera (liver, bile ducts)
Carcass- Hindquarters-LN, Forequarters-cut muscles, diaphragm, pleura, carcass exterior for brusing abscess and DRUG INJECTION SITES, in pigs for eryso
If you need to retain a carcass what do you do?
Place 4 tags on the carcass:
Carcass
Viscera
Head
Keep one for reference for the USDA
What are your 5 principles for post mortem deposition?
Remove and condemn diseased/abnormal tissues
Localize vs Generalized dz
Derangement of body functions
Injurious to health of consumer
Offensive and Repugnant
How do you tell localized from generalized dz?
And acute vs chronic
Evaluate LN and Circulation.
acute you will see septicemia/pyemia/pyrexia
What are some features of a derangement (disturbance of normal bodily function) of body functions? Why could these symptoms be showing? Which ones will be condemned?
Uremia–urinary caniculi
Icteric-impared liver fx/bile duct obstruction
Generalized edema-CHF
Emaciation-acetonemic scent
All of them are condemned
What are some ddx for icterus?
Yellow fat in animals with heavy maize rations
Normal in Jerseys and Guernsey cattle
What is considered injurious to consumers health
Tissues that contain harmful, toxic, or infectious agents that would harm the consumer
What does the PHB do if they suspect presence of residues in the animal carcass/parts?
In plant screening tests including
FAST
KIS
What does the USDA do to prevent injurious to health of consumer
Residue program:
Monitoring programs and surveillance programs
What happens with an illegal residue is detected?
the FSIS reports the violation to FDA’s CVM and the FSIS will notify the producer.
The surveillance program is run by?
FSIS/FDA
the animals are sampled bc they belong to livestock producers RESPONSIBLE for residue violation.
What are some examples of offensive and repugnant conditions
Malignant lymphoma
Eosinophillic myositis
Liver flukes/abscesses
Muscular hemorrhage
Ketosis
Milk fever
Swine erysipelas
What happens if a cow has lymphsarcoma?
Condemned
but its for aesthetic reasons bc malignant lymphoma has no evidence that BLV is transmissible to humans
If at custom slaughter the owner still wants to eat the meat from a BLV infected cow, what should you tell them?
Cook the meat to an internal temp of 77C
What happens if you find eosinophillic myositis?
If generalized, condemnation
If localized, trim the meat and the rest can be used.
If you find fascioloides magna, what do you do?
Affected livers are unfit for human food and check for presence of icterus
If you find liver abscesses, what do you do?
Animals with normal rectal temps and were healthy antemortem and no other post mortem findings, just the liver is condemned.
But if additional post mortem findings with liver abscessation and bad history–whole carcass is condemned
Whites spots on pig livers-what is the likely cause and what do you do?
Ascaris suum
If one pig has it, the whole herd has it.
If the parasite has obstructed the bile duct resulting in icterus–condemn
if its localized to the lungs-no problem we dont eat lungs anyways
if the liver tissue damage is minimal-then complete trimming can be acceptable
otherwise, its not aesthetically pleasing and the whole liver should be condemned
If you see blood splash-muscular hemorrhage, what should you do?
If a healthy ante mortem, then the meat is fine and can be consumed OR
trim affected areas and discard
ground to eliminate their visual presence
the pork could be discarded
If you smell sweet but offensive meat, what do you do?
Ketosis–probably from a febrile cow, or were close to calving prior to slaughter
Carcasses with acetonemia are unfit for human food.
Milk fever….what do you do?
Can tx—withdrawal times
If the cow doesn’t respond to tx–then you’ll smell the ketosis
bruising from being a downer cow
make sure you take a rectal temp
If the cow doesn’t have infection and no odor-pass
Swine erysipelas-what shoudl you do
remember–slight zoonotic
systemic involvement/widespread skin lesions-condemned
if small areas or localized joints-may be passed after removal of infected tissue
Horses…..
FSIS IPP regulates
Stunning, exsanguination and inspect them.
Need to start off with head inspection like a cow plus: guttural pouch for abscesses-strep equi-CONDEMNATION OF ENTIRE CARCASS
