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Animal Science Lab
Carcass Evaluation and Processing
24
Agriculture
Undergraduate 2
05/03/2011

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Cards

Term
Stunning or Immobilization:
Definition
o Mechanical: hammer, stun gun or captive bolt (for sheep & cattle)
o Electrical: electrical shock in swine
o Chemical: CO2 chamber
Term
Bleeding
Definition
o By severing the carotid artery or jugular vein or both
Term
Head Removal:
Definition
o At the Atlas Joint (all species)
Term
Skin or Hair Removal:
Definition
o Cattle: use hide puller
o Sheep: fisting, fell membrane: a membrane the fully encompasses the carcass
o Swine: Scalding, Dehairing machine: removes 95% of the hair
Term
Removal of feet and toenails:
Definition
o Cattle: removed at the knee and hoc
o Swine: toenails pulled off with hooks and fee are left on
o Sheep: removed at the “break joint”: joint on the fore legs at the lower end of the metacarpals
Term
Evisceration
Definition
removing the digestive, respiratory and circulatory organs from the abdominal and thoracic cavities. Contents of these two cavities are known as
o Viscera: (abdominal)
o Pluck: (thoracic – trachea, lungs and heart)
Term
Splitting
Definition
o Cattle and Swine are split
o Sheep are left intact
Term
Antemortem:
Definition
look at animals live within 24 hrs of harvest. Classified as US Passed, US Suspect, or US Condemned
Term
Cooling or Chilling:
Definition
o Blast chilled first at 28 F
o Cooler storage at 36 F
Term
What is the most valuable dress-off item?
Definition
Hide
Term
Color of Lean
Definition
o In Beef is bright, cherry red to dark red
o In Pork is grayish pink to grayish red
o In Lamb is light pink and in mutton bright red
Term
Buttons
Definition
soft cartilage tips on the outside of the chine bones that ossify as an animal matures
Term
Pizzle Eye
Definition
used to distinguish steers from heifer carcasses
Term
How long should feed be withheld prior to slaughter?
Definition
12-24 hrs.
Term
When measuring rib/loin areas how big is each dot
Definition
1/10th of an inch
Term
Beef Carcass Yield Grades
Definition
o Fat thickness measured at 12th rib
o Rib eye area is measured using either grid or planimeter
o The carcass weight used in the industry is the hot carcass weight value obtained immediately after slaughter with hide, head, viscera and feet removed.
o Kidney, pelvic, and heart fat (KPH) represents estimate of pounds of internal fat as percentage of total carcass weight
Term
Beef Quality Grade Maturity Group A
Definition
9 – 30 months (young)
Term
Top Steaks:
Definition
o Prime
o Choice
o Select
o Standard
Term
Four Major Cuts of Swine
Definition
Ham, Loin, Boston Butt (upper), Picnic Shoulder (lower) pg. 211
Term
Unacceptable in Quality of Pork:
Definition
o Pale, Soft and Exudative (PSE)
o Dark, firm, dry (DFD) (caused from stress)
Term
Meat Tenderness:
Definition
Tenderloin Steak, Rib Roast, Top Sirloin Steak, Top Round Steak
Term
Four Major Cuts of Lamb:
Definition
Leg, Loin, Rack, Shoulder pg. 215
Term
Factors Affecting Meat Tenderness: (could be FRQ)
Definition
o Breed Type
o Locomotive vs Support muscles
o Quality Grade Effects
o Degree of doneness
Term
In Beef, Veal, Lamb, Pork:
Definition
Cook to 160 F
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