WATT PoultryUSA - December 2017 - 56
56 ❙ WATTPoultryUSA
Controlled atmosphere stunning systems have become
popular for large turkey in the U.S. but have not been widely
adopted for broilers in North America. | Image courtesy of Marel Poultry.
Costs, benefits of controlled
Controlled atmosphere stunning is more expensive than electrical
stunning, but it carries animal welfare and potential marketing
The majority of broilers in the U.S. are stunned by the
use of electrical current, however, this may be changing.
Driven by a perceived animal welfare improvement,
there is a movement toward controlled atmosphere
stunning (CAS). There are certainly some animal welfare benefits to CAS, but there are drawbacks as well.
With controlled atmosphere stunning systems,
broilers are irreversibly stunned prior to shackling.
This eliminates animal welfare concerns during this
step in the process. Irreversible stunning prior to
shackling also benefits the hanging crew by providing a cleaner work environment with better lighting
and easier hanging of a stunned or dead bird instead
of a live one.
www.WATTAgNet.com ❙ December 2017