SLAUGHTER, PROCESSING AND MARKETING OF FARM ANIMALS Flashcards
from fasting through stunning, bleeding up to skinning and evisceration
slaughtering
from spiltting and quartering, to cutting the carcass into the retail cuts
butchering
the premises used in the slaughter of animals for human consumption
abattoir or slaughterhouse
basic principles of selecting animals for slaughter (8)
- sex
- age
- size
- class
- health
- meat yield
- loin eye and other measurements
- degree of fatness
considerations for slaughtering: sex
meat of barrow and gilts
no distinct differences in meat quality
considerations for slaughtering: sex
boar taint odor
uncast rated male after reaching seven months of age
considerations for slaughtering: sex
boar that less than seven months
fit for slaughter
considerations for slaughtering: sex
hogs that fatter than their female and uncastrated male counterparts of the same age
castrated hogs
considerations for slaughtering: sex
meat from pregnant animal
low quality
considerations for slaughtering: sex
meat of animal that is in the advance stage of pregnancy
meat maybe in fishy odor
considerations for slaughtering: sex
meat from bull compared to steers
generally less tender and lower in overall acceptability
considerations for slaughtering: age
swine
cattle & carabao
goats
swine 6-12 months
cattle & carabao - 3 years younger
goats - about a yaer
considerations for slaughtering: age
meat that is darker, tougher, fatter and poorer quality;
however it is flavorful, high water binding and emulsion capacity, w/c associated w/ high degree of marbling
meat from older animals
considerations for slaughtering: age
marbling in beef
increases up to 30 months, beyond this age limit is stationary
considerations for slaughtering: age
most important quality factor w/c changes w/ age is
tenderness
considerations for slaughtering: age
meat from young and old animals is already equal in terms of tenderness in this age
beyond 42 months of age
considerations for slaughtering: age
w/c is juicier meat between young and old animal
old animal meat is juicier
considerations for slaughtering: size
recommended slaughter weigh of animals for fresh meat retailing and intact meat processing for HOGS
80 - 110 kg
considerations for slaughtering: size
recommended slaughter weigh of animals for fresh meat retailing and intact meat processing for CATTLE AND CARABAO
300 - 450 kg
considerations for slaughtering: class
utilized for the production of quality lechon or roasted pigs, it command the highest price
shote
considerations for slaughtering: health
animals with minimal defects can be slaughtered only if they pass this inspection
anti-mortem inspection
considerations for slaughtering: health
must first be treated to become normal prior to slaughter;
their meat is poor in quality and not recommended
unhealthy animals
considerations for slaughtering: meat yield
total average dressing percentage of swine in the philippines
head off =
total trimmed lean cuts =
head off = 69%
total trimmed lean cuts = 36%
considerations for slaughtering: meat yield
average dressing percentage of beef and carabeef =
48%
considerations for slaughtering: meat yield
total leaned yield percentage of beef and carabeef
34% and 33%
considerations for slaughtering: meat yield
dressing percentage and total lean yield of goat
dressing percentage = 43%
total lean yield = 27%
considerations for slaughtering: loin eye and other measurements
indicative of high lean cut and low-fat cut yields in swine
wide loin eye area
*slaughter hogs w/ wide loin eye area are ideal for slaughtering
considerations for slaughtering: degree of fatness
greatly influences flavor, tenderness and juiciness
fat
*consumers discriminate fatty meat
handling prior to slaughter
- fasting
- stress
- mishandling
feed is withdrawn but sufficient water is given
fasting
fasting of pigs
12 -24 hrs
fasting of carabaos and cattle
24 - 48 hrs
advantages of fasting (6)
- savings of feed
- ease of cleaning entrails
- ease of cleaning and eviscerating carcass
- a throroughly bled and brightly colored carcass
- long shelf life
- low shrinkage of the resulting meat
sources of animal stress (4)
- shipping stress
- over-crowding stress
- driving stress
- heat stress
*any form of stress should not be given to the animal prior to slaughter
number of days should be allowed for animals to relax in the luggage area and be properly conditioned before they are slaughtered.
1 - 3 days
disadvantages of stress (4)
- loss of muscle glycogen
- high temp. of carcass
- low water binging capacity of meat
- low aroma, flavor, texture and juiciness scores
not recommended for curing
meat from stressed animals
condition of meat if the stress is not severe
(PSE) pale, soft, and exudative
condition of meat if the stress is severe
(DFD) dry, firm and dark
pH of meat from unstressed animals
5.3 and the drop is very gradual
pH of meat from stressed animals
6.0 - 7.0 , pH drop is rapid
animal whipped, kicked or boxed prior to slaughter, some blood vessels break in these affected areas
blood clots developed
meat that always spoil before curing period is completed
meat with blood clots and red spots
set the slaughtering guidelines
NMIC/ National Meat Inspection Commision (now),
NMIS/ National Meat Inspection Service
classifications of slaughterhouses in the philippines (3)
- AAA
- AA
- A
classifications of slaughterhouses
those adequate facilities and operational procedure of w/c meat processed herein is eligible for sale in any market in and out of the country
- AAA
classifications of slaughterhouses
those w/ facilities and operational procedures sufficiently adequate that the meat processed herein is eligible for sale in any market in the philippines
- AA
classifications of slaughterhouses
those w/ facilities and operational procedure of minimum adequacy, the meat processed herein is eligible for sale only in the city or municipality in w/c plant is located
- A
basic requirement in slaughtering (4)
- the cleanliness of meat produced
- the hygiene of production
- the efficiency of meat inspection
- the adequacy of meat preservation
steps in general slaughtering (9)
- antemortem inspection
- stunning
- sticking
- cleaning of the carcass
- eviscerating
- splitting
- washing
- post-mortem inspection
- chilling
conducted by a qualified meat inspector to determine whether the animal is fit for slaughter
- antemortem inspection
rendering the animal unconscious w/o killing them to make the restraining easy and sticking humane
- stunning
withdrawing blood from the carcass;
cautioned not to pierce the heart that may cause instant death of the animal and will prevent thoroughly
- sticking
includes scalding, scraping, shaving, flaying, dehiding
- cleaning of the carcass
removing visceral organs from the carcass
- eviscerating
cutting the entire backbone of the carcass
- splitting