Poultry International - July 2019 - 32

32 ❙ PoultryInternational

How to keep broilers cool
during transport to processing
The number of dead-on-arrival birds at the processing plant
can be reduced by ensuring comfortable temperatures
for broilers beginning at capture.
EDUARDO CERVANTES LÓPEZ

P

If the front of the trailer is solid, air will be
stopped from entering and cooling the birds.
Similarly, insufficient apertures in the back
of the trailer will hamper air flow.
Eduardo Cervantes Lopez

Additionally, broilers will exhibit certain behaviors to regulate their temperatures when they
are too hot. For example, reducing activity and
laying down; raising wings and feathers; eating
less; panting; drinking more; and dampening the comb,
wattle and feathers.

Harvesting and loading
During harvesting, birds should not be huddled too
closely together, as this will increase heat stress. Once
birds are inside the cages or containers, their the
www.WATTAgNet.com ❙ July 2019

Eduardo Cervantes Lopez

reventing birds from
overheating from
harvest to unloading
can increase the number
of birds that arrive at the
processing plant alive and
not rejected.
The thermal comfort
zone for broilers is between
22 C and 26 C, with a relative humidity of 60%. When temperatures rise above
this level, the risk to broilers increases.
Birds release their heat into the environment in
a variety of ways, and understanding this can guide
any modifications to practices and procedures that
are already in place.
Heat loss may be through:
■ Radiation, which occurs if a bird's surface temperature is higher than that of its surroundings.
■ Conduction, which is heat transfer from surfaces to
the environment.
■ Convection, which happens when air in direct contact
with the chicken is heated, expands and its density
lowers.
■ Evaporation, which occurs via panting and the respiratory tract, and through the wattles and comb.


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Poultry International - July 2019

Table of Contents for the Digital Edition of Poultry International - July 2019

Poultry International - July 2019
Contents
Editor’s Comment
News
How the Chinese chicken market is responding to ASF
Asia’s poultry producers must adapt to changing demands
Production issues featured at Turkish poultry conference
Farming the chicken of the future – in a really smart way
Identifying biomarkers for poultry intestinal health
How to keep broilers cool during transport to processing
Products
Marketplace
Poultry International - July 2019 - CT1
Poultry International - July 2019 - CT2
Poultry International - July 2019 - Poultry International - July 2019
Poultry International - July 2019 - Cover2
Poultry International - July 2019 - CT3
Poultry International - July 2019 - CT4
Poultry International - July 2019 - Contents
Poultry International - July 2019 - Editor’s Comment
Poultry International - July 2019 - 3
Poultry International - July 2019 - News
Poultry International - July 2019 - 5
Poultry International - July 2019 - How the Chinese chicken market is responding to ASF
Poultry International - July 2019 - 7
Poultry International - July 2019 - 8
Poultry International - July 2019 - 9
Poultry International - July 2019 - 10
Poultry International - July 2019 - 11
Poultry International - July 2019 - Asia’s poultry producers must adapt to changing demands
Poultry International - July 2019 - 13
Poultry International - July 2019 - 14
Poultry International - July 2019 - 15
Poultry International - July 2019 - Production issues featured at Turkish poultry conference
Poultry International - July 2019 - 17
Poultry International - July 2019 - 18
Poultry International - July 2019 - 19
Poultry International - July 2019 - 20
Poultry International - July 2019 - 21
Poultry International - July 2019 - 22
Poultry International - July 2019 - 23
Poultry International - July 2019 - Farming the chicken of the future – in a really smart way
Poultry International - July 2019 - 25
Poultry International - July 2019 - Identifying biomarkers for poultry intestinal health
Poultry International - July 2019 - 27
Poultry International - July 2019 - 28
Poultry International - July 2019 - 29
Poultry International - July 2019 - 30
Poultry International - July 2019 - 31
Poultry International - July 2019 - How to keep broilers cool during transport to processing
Poultry International - July 2019 - 33
Poultry International - July 2019 - 34
Poultry International - July 2019 - 35
Poultry International - July 2019 - 36
Poultry International - July 2019 - 37
Poultry International - July 2019 - Products
Poultry International - July 2019 - 39
Poultry International - July 2019 - Marketplace
Poultry International - July 2019 - Cover3
Poultry International - July 2019 - Cover4
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