Poultry Flashcards
What is the chain of laying hens?
Grandparent flock lays breeding flock
Breeding flock las pullets which become all female laying flock
These lay the infertile eggs that are for sale
How long does it take to become laying age?
16 weeks
How long are chickens layers?
16-70 weeks
What is the chain for broiler chickens?
Grandparent flock
Breeding flock
Table birds
How long are table birds alive for?
5/6 weeks
How are chickens sexed?
Females red
males white
What types of farm are there for poultry?
Rearing farm
Laying farm
Broiler farm
What are pullets?
Young laying hens before they start laying
How is the broiler industry different?
Most intensively farmed
most mechanised
low labour
What businesses control the layer market?
Major egg packers
What business controls th ebroiler industry?
Processors
Mostly contract production
What are the 3 main layer breeds?
Hyline
Lohman
Novogen
WHat are the two main broiler breeds?
Avian
Cobb
What is different about free range?
Loose housed
Access outside through popholes during day
What is the stocking density for broilers?
14birds/m2
What is the stocking density fro layers?
7 birds/m2
How are turkeys usually housed?
Indoor
What is different about ducks and geese?
Ducks feed in water, geese on land
Geese same colour male and female, ducks dimorphic
What must ducks have?
Water trough that they can dunk their heads in
What is used to bring birds into lay?
Extended day lengths
How much light should broilers have?
6 hrs
4 hrs continuous
How much daylight should laying hens get?
8hrs
What kind of lighting are chicks used to?
Intermittent
What problems can you get with lighting?
Can see flickering lights more than humans
need UV light
How much do ducks weigh at slaughter?
males 5kg
females 3kg
How much do broilers weigh at slaughter?
2.3kg
How much do turkeys weigh at slaughter?
7-10kg
What is important to note about temp in chickens?
Packed to tight can cause overheating
46 degrees is fatal
How often are eggs layed?
Every 22-26 hrs
What is the basic anatomy cycle of egg laying?
Yolk from ovary fertilised in oviduct Albumin from magnum shell added in shell gland in uterus laid via cloaca
How long are eggs incubated for?
21 days
What is keel damage caused by?
Collisions with furnishings
Low calcium levels
What does keel damage cause?
Reduced productivity
What are Welfare problems in laying hens?
Cage layer fatigue
Injurous pecking
Keel damage
What does injurous feather pecking cause?
Increased feed consumption to keep warm
more death
decreased production
When is beak trimming done and why?
Before 10 days
less damaging feather pecking
What does beak trimming cause?
Less eating so slower growth
Acute pain when occurs
sensory deprivation
less active
What is the method of beak trimming used?
Infrared trimming
more accurate
no open wound
fall off 10 days later
What are the main welfare concerns of broilers?
Rapid growth rate causing lameness and heart defects
space
pododermatitis - poor litter
What is the max stocking density of broilers?
33kg/m2
What are factors for ventilation in poultry?
Humidity - wet litter, heat stress
Dusty
High ammonia levels
What does poor ventilation cause in chickens?
resp diseases
conjunctivitis
infectious bronchitis
What are the main welfare concerns in broiler breeders?
Mating behaviour - agressive
Hunger
WHat is normal jungle fowl courtship behaviour?
Feather ruffling crowing waltzing food gifts high step advance
Why is feed restricted in broiler breeders?
Stop fast growth, lameness
increases repro health
reduces mortality
What are indicators of hunger and stress?
Hyperactivity Pacing Stereotypic pecking overdrinking corticosterone
How do you make hunger a bit better for the broiler breeders?
Environmental enrichment
scattering of food
WHen does turkey growth rates flatten?
18wks in females
22 wks in males
What are welfare problems in turkeys?
Foot pad lesions
heat stress
injurous pecking
handling and transport causing injuries
What are welfare problems in ducks?
Access to open water
injurious pecking
wet litter
Fall on back and cant get up
What are the two diseases associated with poultry meat?
Campylobacter
Salmonella
What are the two notifiable diseases in poultry?
Newcastle disease
Avian influenza - zoonotic
Who must be informed if notifiable disease?
APHA
How are poultry often vaccinated?
Course spray
How long do birds spend foraging?
60% of time
What causes birds to adjust their feed intake?
Energy density eg. more fat than fibre
What type of fibre to birds eat?
Wheat and barley
What are non starch polysaccharides?
Indigestible dietary fibre
Can be water soluble or insoluble
enzyme supplement help to digest it so more energy
What is used to grind up food in birds?
Gizzard
What does insoluble fibre improve?
Increased gizzard weight
better GI tract function
More HCl and enzymes, bile acid
How is fibre linked to injurious pecking?
More insoluble fibre increases satiety so decreases motivation to forage which decreases injurious feather pecking
What provides fat in poultry diet?
Soya, recycled veg oil
What is fat good for?
Higher egg weight and yolk proportion
better broiler performance
Help with transport of vitamins
What is an essential fatty acid in birds?
Linoleic acid from omega 3 or omega 6
What is important to note with poultry protein?
Need to get essential amino acids which can be supplemented in feed
If not then poor performance
What is different about natural diet to artificial diet of poultry?
Natural diet would also have worms and insects
but only allowed to be plant based in the UK
How is calcium fed to chickens?
CaCO3 limestone, and oyster shell
also need vitamin D and phosphorus
What form is food given in?
Pellets for broilers - all nutrients
mashed feeds for layers as increases time spent feeding so decreases injurious pecking
What must you do if you have more than 50 birds?
Register to the DEFRA poultry register
What are class A eggs?
Part of salmonella flock plan
What must you do if buying chicks?
Vaccinate them
How must backyard poultry be housed?
Outdoors
With shelter, protection, ventilation, perching and space, able to ground peck
What can you feed backyard poultry?
Commercial feed in morning whole grain in evening veg matter but not kitchen waste Mealworm treats Oystershell grit
What routine treatments are done on backyard poultry?
Wing clipping
Beak tipping - top beak clipped to meet lower beak, different to beak clipping
Claw trimming
Bareback saddles for mating to protect feathers