Final 6 Flashcards
Main broiler breeds=?
ross and cobb
Main egg laying breeds?
Lohmann Hyline ISA Shaver Bovan
Main breed in Canada for turkeys
Broad breasted white
3 tiers of supply management
production planning- the supply of the product is kept stead by determining how much of the product to produce every quota period
Import controls
Producer Pricing
Broiler breeder flocks
hens and roosters are housed together at a ration of ~10 hens: 1 rooster
-mating is natural
-light duration and intensity
21 wks: longer day length (11hrs) ; higher intensity
How long can eggs be stored for and how?
can be stored for at least 7 days at 12-16 C and 75% humidity with the small end pointed downward
-proper storage conditions prevent the embryo from developing while preventing moisture loss
Total incubation time for an egg is?
21 days
Setter stage
1st stage of incubation
1-18 days
eggs are turned every hour
-on day 18 the eggs are transferred from the setter to the hatcher
Hatcher stage
second stage of incubation (d 18-21)
humidity is increased to soften shell so chick has easier time melting
At one day of age chicks are processed:
-health check
-sexed
-spray-vaccinated against :
bronchitis virus +/- coccidiosis
Can chicks and poults thermoregulate?
no, not very well for first 7 days
-need to ensure we pre-heat the barn to 32-33C
Major markets for broilers
cornish game hen
3kg
Layer breed flocks
- egg industry also has breeder flocks
- hens and roosters are housed together
- mating is natural
- hatching eggs are sent to the hatchery
Pullet flocks
-one day old pullets are transferred from the hatchery to a rearing facility
Key management factors in pullet flocks
- achieve target weight for age
- maintain flock uniformity
- consistent environmental temp. and air quality
- minimize feed wastage
- ensure good health management and vaccination programs
- provide proper light stimulation
Types of layer flock housing
Conventional cages -5-7 birds/cage -manure belts -tend to see osteroporosis most here Furnished (enriched or enrichable) cages Non-cages -free-run barn is similar to a breeder barn -aviaries may/may not have manure belts -tend to see more heel fractures here
How long does it take to form an egg?
~24 hours
Rate of lay is?
~320 eggs/hen/year
Laying hens are in production for?
12 months
Turkey Hatchery
incubation: 28 days
- 25d in setter, 3d in hatcher
At one day of age, turkey poults are processed:
- health check
- sexed
- beak-trimmed, toe-trimmed
- de-nooded
- spray vaccinated against coccidiosis
Turkey flock growth
growing cycle :until 11-17 weeks of age
-single-level, closed or open-sided floor barns
Bedding: straw or wood shavings, litter is often re-used
Biosecurity manages?
disease risk through;
- on-farm disease control
- preventing pathogens from entering the farm
- stopping pathogens from spreading within and between farms
On farm disease control includes:
- prevention
- early detection
- treatment of identified diseases