Poultry USA - June 2019 - 27

WATTPoultryUSA

Properly utilizing the fans to control air flow and temperature is
essential to keeping birds comfortable in hot temperatures. Dennis Brothers

How endotoxins aggravate broiler heat stress:
www.WATTAgNet.com/articles/33619
Dennis Brothers,
Auburn University
Courtesy Auburn University/National
Poultry Technology Center

He added the caveats
that these numbers change
in larger, more populated
houses and depend upon
the size of the fan used.
The wind chill effect will be greater with cold air
pulled into the house and lesser with hot air. The
wind chill effect is greatly reduced when the exterior
temperature is greater than 90 F (32.2 C).

2

Humidity is not your friend

Birds do not cool themselves by perspiration
like humans do. Rather, they use internal
evaporative cooling through their respiratory tracts - panting - to cool themselves. This
form of thermoregulation is less effective as humidity
increases. So, even if the temperature reads correctly
and feels right to the grower, the birds could be heat
stressed due to high humidity.

June 2019 ❙ www.WATTAgNet.com

This means growers need to be careful with how
they use their evaporative cooling pads. Although
they lower the temperature inside the house, they can
increase humidity and actually make it tougher on the
birds. Below 80 F (26.7 C), the cooling cells typically
should not be used but rather a high volume of airflow
should be maintained.

3

Take advantage of nighttime
ventilation

Farmers should take advantage of the cooler
temperatures by running fans overnight.
Generally, temperatures drop overnight but relative
humidity increases. They should not use evaporative
cooling pads though, as this will create too much
humidity and place too much stress on the birds.
Brothers said house controllers normally turn the
fans off when temperatures decrease, but this can be a
mistake for older birds at night. Instead, at least some
of the fans should be set to keep running all night to
create a minimum ventilation level. This gives the
birds a chance to recover from a hot, humid day.

❙ 27


http://www.WATTAgNet.com/articles/33619 http://www.WATTAgNet.com

Poultry USA - June 2019

Table of Contents for the Digital Edition of Poultry USA - June 2019

Poultry USA - June 2019
Contents
African swine fever could change everything
ASF sparks uncertainty in the global meat industry
What the US poultry industry needs to know about ASF
How chicken will succeed in the digitized proteins market
Startup organic poultry producer off to fast start
4 keys to cooling broilers using tunnel ventilation
Evaluating early feeding for broilers is complicated
US chicken trade faces challenges and opportunities
Mexico’s poultry industry grows facing uncertainty
Product Review
Market Place
Ad Index
Poultry USA - June 2019 - CT1
Poultry USA - June 2019 - CT2
Poultry USA - June 2019 - Poultry USA - June 2019
Poultry USA - June 2019 - Cover2
Poultry USA - June 2019 - CT3
Poultry USA - June 2019 - CT4
Poultry USA - June 2019 - Contents
Poultry USA - June 2019 - ASF sparks uncertainty in the global meat industry
Poultry USA - June 2019 - 3
Poultry USA - June 2019 - 4
Poultry USA - June 2019 - 5
Poultry USA - June 2019 - 6
Poultry USA - June 2019 - 7
Poultry USA - June 2019 - 8
Poultry USA - June 2019 - 9
Poultry USA - June 2019 - What the US poultry industry needs to know about ASF
Poultry USA - June 2019 - 11
Poultry USA - June 2019 - 12
Poultry USA - June 2019 - 13
Poultry USA - June 2019 - 14
Poultry USA - June 2019 - 15
Poultry USA - June 2019 - How chicken will succeed in the digitized proteins market
Poultry USA - June 2019 - CT5
Poultry USA - June 2019 - CT6
Poultry USA - June 2019 - 17
Poultry USA - June 2019 - Startup organic poultry producer off to fast start
Poultry USA - June 2019 - 19
Poultry USA - June 2019 - 20
Poultry USA - June 2019 - 21
Poultry USA - June 2019 - 22
Poultry USA - June 2019 - 23
Poultry USA - June 2019 - 24
Poultry USA - June 2019 - 25
Poultry USA - June 2019 - 4 keys to cooling broilers using tunnel ventilation
Poultry USA - June 2019 - 27
Poultry USA - June 2019 - 28
Poultry USA - June 2019 - 29
Poultry USA - June 2019 - Evaluating early feeding for broilers is complicated
Poultry USA - June 2019 - 31
Poultry USA - June 2019 - US chicken trade faces challenges and opportunities
Poultry USA - June 2019 - 33
Poultry USA - June 2019 - 34
Poultry USA - June 2019 - 35
Poultry USA - June 2019 - Mexico’s poultry industry grows facing uncertainty
Poultry USA - June 2019 - 37
Poultry USA - June 2019 - 38
Poultry USA - June 2019 - 39
Poultry USA - June 2019 - 40
Poultry USA - June 2019 - 41
Poultry USA - June 2019 - 42
Poultry USA - June 2019 - 43
Poultry USA - June 2019 - 44
Poultry USA - June 2019 - 45
Poultry USA - June 2019 - Product Review
Poultry USA - June 2019 - Market Place
Poultry USA - June 2019 - Ad Index
Poultry USA - June 2019 - Cover3
Poultry USA - June 2019 - Cover4
http://www.wattpoultryusa-digital.com/201906
http://www.wattpoultryusa-digital.com/201905
http://www.wattpoultryusa-digital.com/201904
http://www.wattpoultryusa-digital.com/201903
http://www.wattpoultryusa-digital.com/201902
http://www.wattpoultryusa-digital.com/201901
http://www.wattpoultryusa-digital.com/201812
http://www.wattpoultryusa-digital.com/201811
http://www.wattpoultryusa-digital.com/201810
http://www.wattpoultryusa-digital.com/201809
http://www.wattpoultryusa-digital.com/201808
http://www.wattpoultryusa-digital.com/201807
http://www.wattpoultryusa-digital.com/201806
http://www.wattpoultryusa-digital.com/201805
http://www.wattpoultryusa-digital.com/201804
http://www.wattpoultryusa-digital.com/201803
http://www.wattpoultryusa-digital.com/201802
http://www.wattpoultryusa-digital.com/201801
http://www.wattpoultryusa-digital.com/201712
http://www.wattpoultryusa-digital.com/201711
http://www.wattpoultryusa-digital.com/201709
http://www.wattpoultryusa-digital.com/201710
http://www.wattpoultryusa-digital.com/201708
http://www.wattpoultryusa-digital.com/201707
http://www.wattpoultryusa-digital.com/201706
http://www.wattpoultryusa-digital.com/201705
http://www.wattpoultryusa-digital.com/201704
http://www.wattpoultryusa-digital.com/201703
http://www.wattpoultryusa-digital.com/201702
http://www.wattpoultryusa-digital.com/201701
http://www.wattpoultryusa-digital.com/201612
http://www.wattpoultryusa-digital.com/201611
http://www.wattpoultryusa-digital.com/201610
http://www.wattpoultryusa-digital.com/201609
http://www.wattpoultryusa-digital.com/201608
http://www.wattpoultryusa-digital.com/201607
http://www.wattpoultryusa-digital.com/201606
http://www.wattpoultryusa-digital.com/201605
http://www.wattpoultryusa-digital.com/201604
http://www.wattpoultryusa-digital.com/201603
http://www.wattpoultryusa-digital.com/201602
http://www.wattpoultryusa-digital.com/201601
http://www.wattpoultryusa-digital.com/201512
http://www.wattpoultryusa-digital.com/201511
http://www.wattpoultryusa-digital.com/201510
http://www.wattpoultryusa-digital.com/201509
http://www.wattpoultryusa-digital.com/201508
http://www.wattpoultryusa-digital.com/201507
http://www.wattpoultryusa-digital.com/201506
http://www.wattpoultryusa-digital.com/201505
http://www.wattpoultryusa-digital.com/201504
http://www.wattpoultryusa-digital.com/201503
http://www.wattpoultryusa-digital.com/201502
http://www.wattpoultryusa-digital.com/201501
http://www.wattpoultryusa-digital.com/201412
http://www.wattpoultryusa-digital.com/201411
http://www.wattpoultryusa-digital.com/201410
http://www.wattpoultryusa-digital.com/201409
http://www.wattpoultryusa-digital.com/201408
http://www.wattpoultryusa-digital.com/201407
http://www.wattpoultryusa-digital.com/201406
http://www.wattpoultryusa-digital.com/201405
http://www.wattpoultryusa-digital.com/201404
http://www.wattpoultryusa-digital.com/201403
http://www.wattpoultryusa-digital.com/201402
http://www.wattpoultryusa-digital.com/201401
http://www.wattpoultryusa-digital.com/201312
http://www.wattpoultryusa-digital.com/201311
http://www.wattpoultryusa-digital.com/201310
http://www.wattpoultryusa-digital.com/201309
http://www.wattpoultryusa-digital.com/201308
http://www.wattpoultryusa-digital.com/201307
http://www.wattpoultryusa-digital.com/201306
http://www.wattpoultryusa-digital.com/201305
http://www.wattpoultryusa-digital.com/201304
http://www.wattpoultryusa-digital.com/201303
http://www.wattpoultryusa-digital.com/201302
http://www.wattpoultryusa-digital.com/201301
http://www.wattpoultryusa-digital.com/201212
http://www.wattpoultryusa-digital.com/201211
http://www.wattpoultryusa-digital.com/201210
http://www.wattpoultryusa-digital.com/201209
http://www.wattpoultryusa-digital.com/201208
http://www.wattpoultryusa-digital.com/201207
http://www.wattpoultryusa-digital.com/201206
http://www.wattpoultryusa-digital.com/201205
http://www.wattpoultryusa-digital.com/201204
http://www.wattpoultryusa-digital.com/201203
http://www.wattpoultryusa-digital.com/201202
http://www.wattpoultryusa-digital.com/201201
http://www.nxtbookMEDIA.com