Exam 3 Flashcards
Stunning
A method used to render animals unconscious
What method of stunning in used for cattle and sheep?
Captive Bolt
What method of stunning is used for pigs?
Electrical or CO2
Where is the head removed?
At the atlas joint
What is used to remove the hide from cattle?
Hide Puller
What method is used to remove the skin from sheep?
Fisting
What is fisting?
Using the fist to go between skin and fell membrane to leave the fell membrane on
What method is used to dehair pigs?
Scalding
T/F
Skin is removed from pigs during slaughter.
FALSE
The skin is left on
Where on the leg are feet removed from cattle?
knee and hock
When are the feet removed for pigs?
After chilling, the toenails are removed sooner
Where on the leg are feet removed from sheep?
Break/spool joint
Evisceration
Removing contents and organs from abdominal and thoracic cavities
Viscera
abdominal cavity
pluck
thoracic cavity
What is in the thoracic cavity?
trachea
lungs
heart
Which animal is left intact(not split) after slaughter?
Sheep
Antemortem
inspected within 24 hours before harvest
Classifications of antemortem inspection
US passed
US suspect
US condemned
What temp is used for blast chilling?
28 F
What temp is used for cooler storage
36 F
factors influencing dressing percent
fill
digestive tract type
fat
muscle
manure and mud
what is the most valuable by-product of slaughter
hide/pelt
dress off items
blood
feet and shanks
hide/pelt
viscera
head
liver
heart
buttons
soft cartilage on outside of chine bones, ossify(harden) with age
pizzle eye is on what animal sex? why?
Male, its where the penis was removed
factors measuring yield grad
ribeye are
fat thickness
KPH
carcass weight
factors determining maturity
buttons
rib shape
lean color
What quality grades are associated with maturity A?
prime
choice
select
standard
What quality grades are associated with maturity B
prime
choice
standard
utility
What does PSE stand for?
pale soft and exudative
Top 3 most tender meat cuts in order
tenderloin
rib
round
Factors affecting tenderness
-age
-degree of doneness
-breed type
-quality grade
-locomotive vs support
What is a pullet?
Immature female chicken
Oviposition
The egg laying process
Where did the poultry industry start?
Family farms in the midwest
Reasons for increased consumption and production of poultry
-new methods of processing, packaging, and distributing (easier to obtain)
-broilers widely available at a good price (compared to other meats)
-chicken is seen as more healthy
What is vertical integration?
Control by a single management of 2 or more stages of production.
Egg quality grades
AA
A
B
What is the best egg quality grade?
AA (has smallest air cell)
How many eggs can a hen produce a year?
285 eggs
How much feed does it take to grow a pound of chicken?
Less than 1.9 pounds
What is the most valuable poultry cut?
The breast
How long does it take a baby chick to hatch?
21 days
How long does it take a turkey to hatch?
28 days
Heterogametic Sex
The hen (female)
How much feed does it take to produce a dozen eggs?
3 pounds
Top 2 egg states
Iowa
Ohio
Top 2 broiler states
Georgia
Alabama
Top 2 broiler companies
Tyson Food
Pilgrims Pride (JBS)
Top 2 turkey states
Minnesota
North Carolina
Top 2 turkey companies
Butterball
Jennie-O
what percent of eggs are further processed
32%
T/F
There IS a nutritional difference between brown and white eggs
FALSE
there is NO nutritional difference between brown and white eggs
T/F
Male and female turkeys are raised separately
TRUE
What cut are turkeys selected for?
Breast meat
What weight are hens (turkey) raised to?
18-30 lbs.
What weight are toms (turkey) raised to?
40-45 lbs.
Functions of egg in frozen desserts
flavor
texture
yellow color
foam when melting
more natural label
Fibroelastic Penis
Always erected, muscles allow for it to extend and contract
Vascular Penis
Engorges with blood flow to become erect
What is the function of FSH?
Follicular Growth
Function of oxytocin
-Milk let down
-Contractions during birth
T/F
Estrogen is a steroid hormone
TRUE
What is estrogen responsible for
-Sexual behavior
-Secondary sex characteristics
What is testosterone released by in males?
Leydig cells
Advantages of AI
disease control
record keeping
no male on farm
genetic improvement
may be more economical
What AI method is preferred for cattle?
Rectocervical
Gizzard
Part of the poultry GI tract that grinds and massages the food.
Breeding for turkeys
All are AI
What breed of chicken lays the majority of eggs?
White Leg Horn Chickens
Where does fertilization occur?
In the oviduct at the AIJ
Function of the testes
Produces Male Gametes
Cryptorchid meaning
Both testes are retained, animal is sterile
Gonads
Primary reproductive organ
Testes temperature
Must be lower than the body temp
Around 4C below the body temperature
Testes Temperature Regulation
Scrotum- tunica dartos muscle will contract when temp falls
Cremaster Muscle- temp falls and muscles contracts to pull testes closer
Pampiniform Plexus - complex blood vessels that control blood entering the testes
Epididymis
Transports spermatozoa
Concentration of spermatozoa
Storage of spermatozoa
Maturation of spermatozoa