Poultry International - July 2018 - 32

32 ❙ PoultryInternational
CONTROLLED ATMOSPHERE STUNNING
Conventional stunning
Lawlis also covered conventional, electrical stunning, and
best practices for the process. In
this system, the bird is removed
from a module, shackled upside down on a processing line,
dipped in an electrified water
bath and then slaughtered immediately afterward.

Penny Lawlis, Professional
Livestock Auditing Inc.
Right now, this method is the
predominant stunning technique
for chickens in North America. It
works by causing a seizure in the
bird which renders it insensible
before it heads to slaughter. It is
not, however, without problems.
The biggest challenge with
electrical stunning, Lawlis said,
is the possibility the birds are not
properly stunned before being cut
and bled. The birds do not have a
uniform electrical resistance and
some do not receive the proper
current to render the animal insensible before slaughter.
There is no way to determine

the electrical resistance of a live
animal. Lawlis said a number of
factors can influence the electrical resistance of the bird, and
therefore its likelihood to be rendered unconscious by the water
bath. These include: dehydration, time of last feeding, feather
coating and breed. Laying hens,
for example, are known to have
a higher resistance than broiler
birds.
The worst possible outcome
for a bird, Grandin said, is being
processed without being stunned
and properly bled out. These
birds are easy to identify because
they turn bright red after being
scalded.

■

■

■

Best practices for electrical
stunning and slaughter
There are ways to increase the
likelihood of a successful, humane stunning process:
■ Monitor the amperage of the
water bath: It's the amperage,
not the voltage that determines
whether an animal will be
properly stunned. A good
stunner operator will check
the instruments constantly to
ensure they are working accurately and therefore providing
the best odds for a successful
stun.
■ Reduce electrical resistance:
The resistance can be lowered
by simply adding salt to water
bath, keeping the shackles wet
and making sure the birds are

■

clean before entering the bath.
Ensure the bird's head is
going far enough into the
stunner: The birds should
be dipped to the base of their
wings for a proper stun.
Ensure the bird is spending
long enough in the stunner:
Birds should be in the stunner
for a minimum of four seconds
in a low-frequency stunner and
for a minimum of 10 seconds
in a higher frequency stunner.
Take care when shackling
the birds: Lawlis said a blue
or low-intensity light should
be used in the shackling area
to help calm the birds. Birds
should be lifted using one leg
per hand, handled firmly but
gently and placed into shackles without squeezing or tugging. Workers should be given
sufficient breaks and all escaped animals must be caught
as soon as possible.
Slaughter humanely: After
being stunned, the birds
should be cut as soon as possible and then given at least
15 seconds to bleed out. The
blade should be set at a level
where the cut is made across
the main blood vessels, the
carotid arteries and the jugular
veins. Lawlis said the bleeding
process is done to ensure the
animal is dead, as much blood
is drained from the bird as
possible and the meat is high
quality. ■
www.WATTAgNet.com ❙ July 2018


http://www.WATTAgNet.com

Table of Contents for the Digital Edition of Poultry International - July 2018

Poultry International - July 2018
Contents
Editor’s Comment
News
IEC highlights solutions, egg industry challenges
How egg marketing campaigns increase consumption
Which are the world’s largest egg producers?
New chicken genetics center opens in Ethiopia
South African feed sales down as poultry sector suffers
Is the next frontier in poultry health the microbiome?
Holistic approach to feeding heat-stressed broilers
The pros and cons of controlled atmosphere stunning
How preventing wing fl apping improves chicken processing
Products
Marketplace
Poultry International - July 2018 - CT1
Poultry International - July 2018 - CT2
Poultry International - July 2018 - Poultry International - July 2018
Poultry International - July 2018 - Cover2
Poultry International - July 2018 - BB1
Poultry International - July 2018 - BB2
Poultry International - July 2018 - Contents
Poultry International - July 2018 - Editor’s Comment
Poultry International - July 2018 - 3
Poultry International - July 2018 - News
Poultry International - July 2018 - 5
Poultry International - July 2018 - IEC highlights solutions, egg industry challenges
Poultry International - July 2018 - 7
Poultry International - July 2018 - 8
Poultry International - July 2018 - 9
Poultry International - July 2018 - How egg marketing campaigns increase consumption
Poultry International - July 2018 - 11
Poultry International - July 2018 - 12
Poultry International - July 2018 - 13
Poultry International - July 2018 - Which are the world’s largest egg producers?
Poultry International - July 2018 - 15
Poultry International - July 2018 - 16
Poultry International - July 2018 - 17
Poultry International - July 2018 - New chicken genetics center opens in Ethiopia
Poultry International - July 2018 - 19
Poultry International - July 2018 - 20
Poultry International - July 2018 - 21
Poultry International - July 2018 - 22
Poultry International - July 2018 - 23
Poultry International - July 2018 - South African feed sales down as poultry sector suffers
Poultry International - July 2018 - 25
Poultry International - July 2018 - Is the next frontier in poultry health the microbiome?
Poultry International - July 2018 - 27
Poultry International - July 2018 - Holistic approach to feeding heat-stressed broilers
Poultry International - July 2018 - 29
Poultry International - July 2018 - The pros and cons of controlled atmosphere stunning
Poultry International - July 2018 - 31
Poultry International - July 2018 - 32
Poultry International - July 2018 - 33
Poultry International - July 2018 - How preventing wing fl apping improves chicken processing
Poultry International - July 2018 - 35
Poultry International - July 2018 - 36
Poultry International - July 2018 - 37
Poultry International - July 2018 - 38
Poultry International - July 2018 - Marketplace
Poultry International - July 2018 - 40
Poultry International - July 2018 - Cover3
Poultry International - July 2018 - Cover4
http://www.poultryinternational-digital.com/201904
http://www.poultryinternational-digital.com/201903
http://www.poultryinternational-digital.com/201902
http://www.poultryinternational-digital.com/201901
http://www.poultryinternational-digital.com/201812
http://www.poultryinternational-digital.com/201811
http://www.poultryinternational-digital.com/201810/
http://www.poultryinternational-digital.com/201809/
http://www.poultryinternational-digital.com/201808/
http://www.poultryinternational-digital.com/201807/
http://www.poultryinternational-digital.com/201806/
http://www.poultryinternational-digital.com/201805/
http://www.poultryinternational-digital.com/201804/
http://www.poultryinternational-digital.com/201803/
http://www.poultryinternational-digital.com/201802/
http://www.poultryinternational-digital.com/201801/
http://www.poultryinternational-digital.com/201712/
http://www.poultryinternational-digital.com/201711/
http://www.poultryinternational-digital.com/201710/
http://www.poultryinternational-digital.com/201709/
http://www.poultryinternational-digital.com/201708/
http://www.poultryinternational-digital.com/201707/
http://www.poultryinternational-digital.com/201706/
http://www.poultryinternational-digital.com/201705/
http://www.poultryinternational-digital.com/201704/
http://www.poultryinternational-digital.com/201703/
http://www.poultryinternational-digital.com/201702/
http://www.poultryinternational-digital.com/201701/
http://www.poultryinternational-digital.com/201612/
http://www.poultryinternational-digital.com/201611/
http://www.poultryinternational-digital.com/201610/
http://www.poultryinternational-digital.com/201609
http://www.poultryinternational-digital.com/201608
http://www.poultryinternational-digital.com/201607
http://www.poultryinternational-digital.com/201606
http://www.poultryinternational-digital.com/201605
http://www.poultryinternational-digital.com/201604
http://www.poultryinternational-digital.com/201603
http://www.poultryinternational-digital.com/201602
http://www.poultryinternational-digital.com/201601
http://www.poultryinternational-digital.com/201512
http://www.poultryinternational-digital.com/201511
http://www.poultryinternational-digital.com/201510
http://www.poultryinternational-digital.com/201509
http://www.poultryinternational-digital.com/201508
http://www.poultryinternational-digital.com/201507
http://www.poultryinternational-digital.com/201506
http://www.poultryinternational-digital.com/201505
http://www.poultryinternational-digital.com/201504
http://www.poultryinternational-digital.com/201503
http://www.poultryinternational-digital.com/201502
http://www.poultryinternational-digital.com/201501
http://www.poultryinternational-digital.com/201412
http://www.poultryinternational-digital.com/201411
http://www.poultryinternational-digital.com/201410
http://www.poultryinternational-digital.com/201409
http://www.poultryinternational-digital.com/201408
http://www.poultryinternational-digital.com/201407
http://www.poultryinternational-digital.com/201406
http://www.poultryinternational-digital.com/201405
http://www.poultryinternational-digital.com/201404
http://www.poultryinternational-digital.com/201403
http://www.poultryinternational-digital.com/201402
http://www.poultryinternational-digital.com/201401
http://www.poultryinternational-digital.com/201312
http://www.poultryinternational-digital.com/201311
http://www.poultryinternational-digital.com/201310
http://www.poultryinternational-digital.com/201309
http://www.poultryinternational-digital.com/201308
http://www.poultryinternational-digital.com/201307
http://www.poultryinternational-digital.com/201306
http://www.poultryinternational-digital.com/201305
http://www.poultryinternational-digital.com/201304
http://www.poultryinternational-digital.com/201303
http://www.poultryinternational-digital.com/201302
http://www.poultryinternational-digital.com/201301
http://www.poultryinternational-digital.com/201212
http://www.poultryinternational-digital.com/201211
http://www.poultryinternational-digital.com/201210
http://www.poultryinternational-digital.com/201209
http://www.poultryinternational-digital.com/201208
http://www.poultryinternational-digital.com/201207
http://www.poultryinternational-digital.com/201206
http://www.poultryinternational-digital.com/201205
http://www.poultryinternational-digital.com/201204
http://www.poultryinternational-digital.com/201203
http://www.poultryinternational-digital.com/201202
http://www.poultryinternational-digital.com/201201
http://www.nxtbookMEDIA.com