Poultry Exam Flashcards
Three sectors of the poultry industry
Broilers, Layers, turkey
Broilers
specific term for a bird used for meat
layers
specific term for a bird used for laying eggs
The turkey industry is very similar to the
broiler industry
What type of system is considered conventional
Caged
The industry is transitioning to this type of system
cage-free
Missouri ranks ___ in broilers
7th
Missouri ranks __ in turkeys
4th
How many jobs does the poultry industry produce in the US
1.3 million
The U.S. poultry industry is the _____ producer and ________ exporter
largest producer
second largest exporter
Top 5 export markets for Turkey meat
Mexico
Canada
China
Dominican Republic
Guetamala
Top 5 exports markets for chicken meat
Mexico
China
Canada
Cuba
Guetamala
Top producing state in broilers
Georgia
Five major poultry systems in Missouri
Butterball
Cargill
Simmons
George’s
Tyson
Benefit of an integrated system
Reduces cost
Vertical integration
one company owns every step of the production of the bird
Horizontal integration
One company owns all of the barns/ parts of the system
Broiler breeds
White Cornish
White Plymouth Rock
Layer breeds
White leghorns
Rhode Island Red
Instead of breeds, the poultry industry uses
lines
Male side of broiler industry cross
white cornish
Characteristics of White cornish breed
English
Broad, meaty
large and fast growing
Female side of broiler industry cross
White Plymouth Rock
Characteristics of White Plymouth Rock breed
American
docile
dual purpose breed- important for further generations
Breed used in most caged laying operations
White leghorns
Characteristics of the white Leghorn breed
Mediteranean
White
Breed used in most cage-free operations
Rhode Island Red
Characteristics of the Rhode Island Red Breed
American
Brownish red
Breed of turkey used in meat industry
Broad breasted White
Why don’t domestic turkeys mate naturally
Don’t house sexes together
breast are too large to mount
Why did the turkey industry switch to white birds over the bronze birds
White feathers are easier to pluck
Specialty industries
Organic
cage free
antibiotic free
Ratites- ostriches and emus
Game birds
Processing of eggs at the breeder
Washed and stored until shipped to hatchery from the breeder
How long can you cool eggs and still have them be viable
a week
Oviparus
Egg pregnancy
can cool and pause the pregnancy
incubation period for chicks
21 days
Hatchability
estimated number of eggs that will hatch in a clutch
Clutch
a group of eggs laid continuously
In Ovo Vaccinations
Vaccinations done while the chick is in the egg
Spray vaccinations
done to the chick after they are born
usually for respiratory diseases
Functional poikilotherms
means they cannot regulate their own body temperature
brooding rings
house chicks and must include heat, water, and feed
Broilers require very little or alot of management
very little
Housing trend for broilers
houses are getting larger
average today of 40,000 square feet
automated water, feed, and lights
Automated ventilation systems
crosswise cooling
lengthways cooling
Where do you want the humidity for a broiler barn
60-80%
Why is relative humidity important
moisture leads to bacteria
Number of federally-inspected broiler companies
30
number of family farms with contracts
25,000
In a contract system the farmer owns
housing, feeding/watering systems, water, electricity, fuel, litter, labor
In a contract system the company owns
chicks, feed, medication, supervision (knowledge)
How many hours of light a day does a broiler get
16 hours
What are the birds doing when the lights are on
Eating
What is the 1st priority at slaughter facilities
Welfare of the bird
Process of slaughtering the bird
shackled
electrical stunning or controlled atmosphere stunning
Cut the throat to bleed out/ kills the birds
Ensanguining
bleeding out
Back up human
catch any birds that slip through
Plucking
removing the feathers
Evisceration
removing viscera/internal organs
Chilling/processing
water/organic rinse
counter current flow
air chilled
inspected
processing and second processing
Top ten states for egg production
Iowa
Ohio
Indiana
Pennsylvania
Texas
Georgia
Arkansas
North Carolina
Michigan
California
Conventional Laying hens are housed in
caged systems
Conventional laying system characteristics
birds not on litter
increased egg production in space
standing on wires
constant feed, water, egg removal
layers of bird
automated system
Aviary system
birds can decide what floor to be on
creates a pecking order
Enriched cages
add options to the cage
increased cage size
less chickens per cage
Floor housing
decreases number of birds
looks prettier
Two types of brooding
whole house
brooding rings
A layers diet focuses on what
growth until feathers
chicks are fed all of the time until they get feathers and then they are carefully managed so they don’t grow too fast
Laying hens reach maturity at what age
18 weeks
Hens lay an egg every
24-26 hours
Hens typically lay at what time of day
early morning
Eggs develop in the
oviduct of the hen
The laying hen egg cycle depends on
light
Peak laying happens at
32 weeks
peak laying is maintained for
65-68 weeks
Egg sizes
small
medium
large
extra large
jumbo
Small eggs have what type of shell
thick shells
Large eggs have what type of shell
thin shells
The most common size of eggs in the grocery store is
large or extra large
Molt
shedding old feathers
Pullet
young laying hen
Why do birds not lay eggs when they molt
to reset
Two types of molting
natural
induced- done by controlling lighting, decreasing feed intake and the quality of the diet
Spent hen
hen at the end of the cycle
soupers
spent hens used for chicken noodle soup
What can be done with spent hens
rendered- no market
sold to zoos to feed animals
sold to the public
will still produce just not at the rate needed for a large operation
Egg collection is
mostly automated on farm
How to maintain quality of eggs
multiple pick up times
careful handling
cooling
cleaning
packaging clean
Keeping eggs clean avoids
bacteria
Cuticle bloom
wax like covering over an egg
Egg grading depends on
condition of the egg white
condition of the egg yolk
air cell size
Egg gradings
AA
A
B
Eggs are cooled to
45 degrees
If eggs are not being cooled they
should be handled carefully and the cuticle and bloom should not be washed off
Eggs removed from shell for processing
Whole egg
egg whites
yolks
processed and pasteurized blends
Ways to pasteurize eggs
Freezing
drying- spray, pan, refractance window
Parts of the egg
air cell
cuticula
shell
germinal disc
vitelline membrane
yolk
chalaza
thin albumen
thick albumen
Be able to label these on a diagram
Top turkey producing states
Minnesota
North Carolina
Arkansas
Indiana
Missouri
Virginia
Iowa
California
Average turkey consumption per capita
16.1 lbs
Number one turkey export market
Mexico by value and weight
Tom
male turkey
Hen
female turkey
Poult
young turkey
gestation length of turkeys
28 days
Processing after hatching
beak trimming
toe trimming
Why are we moving away from processing poults after hatching
consumers see it as a negative practice
Why is brooding turkeys important
they are not very smart
When do you remove the brooding rings from turkeys
when they start jumping over it
What is the difference between broilers and turkey barns
males and females are separated in turkey barns
stronger equipment since turkeys are bigger animals
What age are turkeys loaded out of the barns
19-21 weeks
turkey products
whole bird
ground turkey
brats/hot dogs
bacon
turkey sausage
turkey breasts
Sex chromosomes for a female
ZW
Sex chromosomes for a male
ZZ
Who decides the sex of the chick
the female
Quantitative traits
traits you can measure
Qualitative traits
traits we can see
hard to measure
Qualitative traits
comb type
feather color
shank/foot color
dark skin color
What does the breeder industry do
basis for the industry
develop genetic lines
research
raised with strict biosecurity practices
Goal of genetic selection
Offspring that are better than the parent
Specialization allows for
advancement
Desirable traits for laying hens
clutch length
shell quality
sexual maturity
size
temperament
Desirable traits for broilers
growth rate
skeletal development
resilience
How many generations does it take to pass on a trait
5 generations
How long does it take to pass on a trait
about 4 years
Top of the breeding stock pyramid going down
Pure line, elite stock
great grandparent stock
grandparent stock
parent stock
broilers or layers
chicken meat or eggs for consumption
Which part of the breeding stock industry has the highest biosecurity
Pure line, elite stock
What is heritability of traits
portion of differences transmitted from parent to offspring
highly heritable
a lot of change quickly
lowly heritable
little change, takes time
Nicking
hybrid vigor, heterosis
offspring exceed parents for specific trait
Major broiler breeders
Ross- Avigen
Cobb- Tyson
Hubbard- Avigen
Major layer breeders
Hy-Line
ISA-Hendrix
Lohmann
Major turkey breeders
Hybrid- Hendrix
Nicholas- Avigen Turkey
British United Turkeys (BUT)- Avigen Turkey
Age of sexual maturity
Layers- 18-20 weeks
Broilers- 24-27 weeks
Turkeys- 28-30 weeks
Egg production of broiler breeders
160 eggs per hen
Egg production for layer breeders
300 eggs per hen
Egg production for turkey breeders
110 eggs per hen
How many roosters are needed per hen
1 rooster per 10 hens
How are turkeys bred
artificially every 7-10 days
Poultry sperm can survive how long in the avian body
10-14 days
Capon
castrated male chicken
Caponization
castrating a chicken
Male avian species have what kind of testicles
internal
tucked up next to the kidneys
Sperm host glands
sperm storage in the hen
How many oviducts does a hen have
two
one is active while the other does not develop
Nutrition is required for
living, growing, reproducing, all bodily functions
Energy comes from
diet
stored energy (fat)
Goal of poultry nutrition
create well-balanced diets to meet their needs but at the lowest cost
Classes of nutrients
water
protein
carbs
fats
vitamins
minerals
Anabolism
building things up from smaller pieces
Catabolism
breaking things down into smaller pieces
two parts of metabolism
anabolism
catabolism
key to healthy animal that produces
a balanced ration
What factors go into a balanced ration
animal’s nutritional requirements
composition of feedstuffs used
Dry matter is used to
remove water from the picture
compare feeds more easily
to know how much to physically feed the ration must be converted back to
as-fed
Crop
stores feed
adds moisture to soften food
proventriculus
acids added to chemically break down feed
Gizzard
grinding motion to physically break down feedstuff
Ceca
fermentation vat
chickens have 2
cloaca
all the tracts meet together at this point
Vent
where everything exits the bird
Which diet has the most protein
- Turkey
- Broilers
- Layers
Calcium requirements for broilers
1% of diet
Calcium requirements for layers
0.9-4.0%
needed for egg shells so it is higher when they are laying
Calcium requirements for turkeys
1.2% then goes down with age
Germinal disc
site of fermentation
What does the yolk provide
energy while the chick is in the egg
Types of disease and illnesses
bacterial
viral
protozoal disease
parasites
nutritional diseases and deficiencies
Fowl Cholera
Bacterial
Pasteurella Multocida
survives for long periods of time in environment
enters tissues of mouth and upper respiratory tract
other animals can spread and serve as reservoirs
more prominent in turkeys
Mycoplasmosis
bacterial
chronic respiratory disease and air sac syndrome
usually seen as a secondary infection
symptoms- swelling of sinuses and hock/tendons
chickens and turkeys
Botulism
Bacteria
toxin created by Clostridium botulinum
byproduct of bacterias growth
high humidity, high temperatures
decaying organic matter
weakness followed by paralysis
prevented by removing carcasses from the house
Newcastle disease
Virus
most severe strain not in the US
transmitted by contaminated equipment, shoes, clothing, and free-flying birds
respiratory symptoms then nervous
younger birds more suseptable
vaccination available
Infectious Bronchitis
Virus
Vaccine available but no cure
coughing, sneezing, “rales”/rattling when breathing
chickens only
production rapidly drops
small eggs with soft shells
Marek’s Disease
Virus
Young chickens
Herpes virus
Concentrates in feather follicles spreads by aerosols
vaccination available
Gumboro (infectious Bursal Disease)
Highly contagious
young chickens
decreases immune development
not always lethal but susceptible to later diseases
direct contact transmission
symptoms- ruffled feathers, slight tremor, strained defecation, unsteady gait
Avian Influenza
Extreme concern since 2021 outbreak
Viral
Wild fowl are carriers
Zoonotic
Look like they don’t feel well, respiratory issues
Total depopulation and cleaning period
reportable disease
Coccidiosis
Protozoa disease
necrotic enteritis- intestines begin to die
bloody diarrhea
fecal-oral contamination
vaccination or anticoccidial drugs
Internal parasites
ascarids
cecal worms
tapeworms
gapeworms
External parasites
Mites
lice
fowl tick
chiggers, red bugs, or harvest mites
Woody breast disease
not really a disease more of a management concern
inflammation of veins in the breast of the bird, changes texture of the meat
comes from fast growth
White Striping
Streaks of white through the meat
addition of fat within the muscle
comes from fast growth
Sudden death syndrome
no symptoms
bird flaps over and dies
Sudden death syndrome is common in
broilers
Sudden death syndrome is caused by
metabolic abnormality
What type of meat is ostrich considered
red meat
ostrich meat is
naturally lean, higher in iron
ostrich farms boomed in
1990s
highest producer of ostriches
Texas
Ostriches are flightless due to
their sternum
ducks are utilized for
meat or eggs
Ducks take how long to mature
10 weeks
Viral duck hepatitis
Viral disease
between day 1-28
contraction of legs
mortality rate-90%
Duck viral enteritis Duck Plague
herpes virus
affects older ducks
Avian Fowl Cholera
bacteria
standing water, poor sanitation
Aflatoxin
toxin produced by moldy, dirty grain
Botulism
toxin produced by bacteria
neurological symptoms, coma, death
Animal welfare
comfortable with the idea of owning but properly treated
animal rights
belief that animals have the same rights as humans
certified
has been evaluated as specific class, quality, or grade
Chemical Free
should not see because they are not allowed on products anyways
free range/free roaming
needs access to the outdoors
fresh poultry
cooled but not kept lower than 26 degrees
frozen poultry
kept at 0 degrees
No hormones
do not give poultry hormones for growth
no antibiotics
needs to be very well documented
animal was not given antibiotics
organic
used all organic feedstuffs
Air-chilled
cool the carcass and then cut it
Kosher
products that have been processed under rabbinical supervision
Enhanced/ seasoned
ready to go straight out of the package
certified humane
managed and approved by a non-profit organization
animal welfare approved
a greener world
Poultry product inspection act of
1957
Poultry product inspection act of 1957 ensures that
USDA FSIS inspects all of the birds
prevents adulterated or mislabeled products
Litter should be
dry but not too dry
Wet litter can cause
skin burns and disease
too dry litter can cause
dust buildup
Cake
top layer of the litter that contains the excretion
packed down
Cleanout process between flocks
break up the old cake and remove nasty parts
Rest period after a barn is emptied
14 days
Houses are completely cleaned out
1-2 times a year
Fertilizer considerations
soil needs
litter nutrient composition
plant utilization
House cleaning points of interest
fans
brooders
feed lines and pans
waterlines
Factors that affect waterlines
chlorination
pathogens
nitrogen
hardness and mineral content
turbidity
temperature
pH
At what height do we want feed and waterlines
back height on the bird
Layers need how many grams of Ca a day
4 grams
What do layers use the Ca for
2 grams for general function
2 grams for egg production
Proposition 2
Space to turn around and extend limbs
- laying hens- battery cage
-sows- gestation crates
- veal calves- veal crates
supported by the Humane Society of the United States
Not specific to size
Proposition 12
Builds on proposition 2
- laying hens- 1 square foot of usable floorspace
- breeding pigs- 24 square feet of space
- veal calves- 43 square feet of space
Unique bones for poultry
Pneumatic
- air pockets, hollow
Medulla
- soft centers
Chalaza
part of an egg that holds the yolk in place
Albumen
Thick and thin parts
provide cushion and prevent the chick from dehydrating as it develops
Air cell
part of the egg that gives space for the chick
chick’s head goes to the air cell and bust the cap off when hatching