Egg Production Hens Flashcards
1
Q
why do meat birds take longer then layers
A
they are bread for different things - layers reach sexual maturity faster
2
Q
what is the advantage to buy eggs from someone else
A
- less infastructure
- less labour
- less contamination/ biosecurity threat
- focus on one specific craft
3
Q
what are some disadvantages to buying from someone else
A
- higher cost
- have to just trust the producer (with vaccinations, feed and biosecurity)
4
Q
what is the brooding and rearing phase
A
0-19 weeks
5
Q
what is the laying phase and breeding
A
- 19-71 weeks
6
Q
what are different ways you can purchase eggs
A
- pie shells
- baked goods
- pickled eggs
- powder/dehydrated eggs
- liquid eggs
7
Q
why choose colour over white as a producer
A
- consumer preference
- space requirements
- temperment
8
Q
what is the difference between hen housed and hen day production
A
- hen house = accounting for mortality, lower than hen day because of this
- hen day = hen production for the day, know total hen days, doesnt account for mortality
- a producer must keep records every singer day
- for quota and productivity
- bird health and biosecurity
9
Q
what are production characteristics
A
- body size
- egg weight
- egg shell quality
- albumen quality
10
Q
what is sexing and why is it used
A
- there is no market for male chicks (euthnized in hatchery) used for food sources at zoo
11
Q
what are two ways chicks are euthenized at the hatchery
A
- macerator - immediate - big blender
- CO2 gas - 40-60 seconds, burns and causes pain
12
Q
what is sexing in ovo ? is it used
A
- needle that pulls a protein out to sex
- not commerical available - only has a 90% success rate
13
Q
what is beak treatment and why is it used
A
- beaks have a hook on them that grabs skin and causes blood - canabolism commenses
- vascular growing tissue that is highly innervated= the tip of the beak has specialised nerve endings important ti sense of touch
- inferred lights comes over the tip and will fall off in a few days ( no pain response)
14
Q
what is hot blade trimming
A
- an old school type of beak treating that would take a hot blase and burn off hook
- on first day there was no pain response but as week went on bird stopped moving and eating
15
Q
how does inferred beak treatment help welfare
A
- tissue grows over the portion that falls off, keeping bacteria from getting inside
