AM and PM White Meat Flashcards
What age are commerical broilers slaughtered at? What is the legislation surrounding organic chicken?
Cannot be slaughtered before 81d
- different slow growing breeds used
> standard 4-7 weeks
Where are the AM and PM inspection points on a poultry slaugheter line?
> Before shackling
at plucking (after water baths)
at evisceration
Commonest causes of DOA
- carelessness of handlers
- heart failure
> spikes caused by extreme temperature changes (birds not good thermoregulators)
FSA checks
- animal ID
- animal welfare
- conditions relevant to animal and public health
Random sample for each batch.. What is looked at?
- postures
- respiratory
- cleanliness
- wattle colour
- FCI
> AM inspection can also be carried out on farm of origins - will need a veterinary health certificate
How would you deal with a salmonella+ batch from FCI evidence
Slaughter last of the day to prevent contamination
PM inspection - OV duties
- inspect representative sample of birds viscera and body cavities
- thorough inspection random sample of birds rejected of every batch
- investigate potential causes of carcasses unfit for human consumption
- health certificate checks of birds for foie gras production or delayed evisceration poultry (slaughtered at farm)
Which eggs are most likely to have salmonella
- catering eggs cheap from abroad
- not red lion
- weird strains salmonella too
Pericarditis, peri-hepatitis and peritonitis - category and main casues of each
- > otal condemnantion as systemic dz usually infectious cause
pericarditis - earl/late life
- E. COli and Salmonella cause often 2* to viral respiratory dz
> perihepatitis - most commonly E. Coli, sometimes salmonella
> PEritonitits - 2* to salpingitis, trauma, enteritis, hepatitits
- end of lay hens egg peritonititis
- usually E Coli
- pasturella may also be found
What is Oregon ddisease? Category?
- discolouration of supracoideus muscle
- d/t periods intense muscular activity -> occlusionblood supply -> deep pectoral myopathy
> Action: trimming partial condemnation
Why is the Whole carcasse often destroyed ?
- not worth the time/money to strip bits out even if whole carcasse not condemned
Main causes of fractures and bruising
Catching and poor hanging technique
Post mortem bleeding
NOT POSSIBLE NEED LIVE HEART TO BRUISE OR BLEED
Main causes of fractures and bruising in poultry at farm level?
- thinning
- catching
- trauma by other birds
- poor housing design
Categorise over scalding
2mm deep reject whole carcasse (tissues more susceptible to bacterial growth
What do breast blisters indicate? Action to be taken?
- trim if not too deep, local condemnation
- or reject whole carcasse cat 2 if associated with systemic condition
- heavy birds with pododermatitis leg wekaness or bedding problems
- infectious agents: mycoplasma synovia, staph, pasturella (either from local trauma or extension of systemic infection)
Causes of Coliform cellulitis. Action to be taken?
- big birds again, often slow feathering breeds with more prominent abdomen, ^ stocking density, and humidity
> decision - wet form or nonlocalised lesions (septicaemia) = total condemnantion
- dry form/localised lesions = partial condemnation
- d/t E. Coli
Hat age are commercial broilers slaughetered
5-7 weeks (2 month cycles)
Common causes DOA/DIL
- congestive heart failure
- trauma crates
> thermal stress causes spikes
> stress
> infectious dz (highly pathogenic avian influenza strains)
Ascites causes and decisisons
= R sided heart failure
- d/thigh growth rates, inadequate ventilation,
- gellified d/t movement plasma proteins
> Not infectious
- still total condemnation as systemic dz - Cat 2 or cat 3 depending on infectious organism implicated or not
