surveillance at the abbatoir

ongoing consistant and constant method of lookign for something

pre farm- feed
farm- TB, milk sampling
wildlife
food processing- inc abbatiors
wholesale or retail level- food pathogens

ante and post mortem
sampling microorganimsls and chemical hazards.
data recroding

good for mass sampling, cost effective but:
not a respresentative population : only getting the fit clean and healthy, not fallen stock. some populations eg young, permanently excluded
tested in batches, might miss stuff

cost effective, dont anayways
high detection sensitivity for macroscopic lesions/ CS

need obvious CS/ lesions
not effective against common CS or exotic rare diseases since no suspicion

passive: only suspected animals sampled
active: all animals from a defined risk population are sampled. no suspicion

Notifiable Disease is a disease mentioned in Section 88 of the animal
health act or any regulations made under this act.

OIE
EU
DEFRA
FSA

FMDV
ASF
HPAI

cattle, sheep pig
lame vesicles slobbering
100% mobidity, no mortality

dull depressed cyanotic, wattle gunky eye, snotty
or just straight dead
LPAI also notifiable.

close to UK....
fomites, vet, cars, ham sandiwhces
bleedingfrom orifices, septicaimia, death

up to 8 year old cows

atypical and typical
ie cow eaten cow protein vs genetic

take a helix and turn into b pleated sheets and form vacuoles in the grey matter
synapes cant form correctly:
panic axneity ataxia difficulty breathing
can only test by looking at the brain stem: cant do while alive

emergency slaughter
ante mortem inspeciton signs
fallen stock

EU>48motnhgs old
non eu >24 months

healthy: non EU> 30 months. EU dont

training
good facilities
avoid cross contam
storage
seperation
disposal

scrapies- sheep
cervids: CWD
mink: TME
felines: FSE
humans: CJD genetic, vCJD from cattle, fatal familial insomnia genetic, huru canabalism

• Wasting (dramatic)
• Stumbling/lack of coordination
• listlessness
• drooling
• excessive thirst or urination
• drooping ears
• Aggression / lack of fear of
people

tissue brain stem/ LN
euthanise

brucellosis- eradicated from GB
bluetongue- exotic, but in UK from midges
warble fly- only in scotland is it notifiable
EBL- tumours, refer to defra except pappilomas and haemangiosarcomas
aujeszkys (pseudorabies)- pigs
anthrax- septicaemia, sample from ear vein. dont cut the animal open.

lab tells APHA
salmonella and brucella

from swine, wild boar and equids.
nematodes, can cause signs in humans
main host= rodents
these animals eat rodents, get trichonella, spread to us

controlled housing- no rodents allowed inside. so dont have to suirveilance them
surveilance outdoor pigs and wild boar
expensive tested or freezing meat to kill nematode
enzymatic disphragm test- look under microscope for nematode.
all horses if sold for food need the test

bahviours
biting
canabalism
conditions
mortality DOAs
fractures
lairage conditions
management

VMD
annual national surveillance programme
OV at abbatoir
samples to lab
results back to VMD
VMD contact APHA or FSA if positive
investigation / enforcement action or product recall