Apr 17, 2014
Home| Tools| Events| Blogs| Discussions Sign UpLogin

Watch Livestock in Emergency Heat Stress Areas

July 4, 2012
 
 

USDA's heat stress forecasts show emergency heat levels for much of the central U.S. through July 6th.

heat map   

 

For livestock that means heat indexes will reach high enough levels to be a danger to cattle and other livestock.

Dr. John B. Gaughan of the University of Queensland, Gatton, Australia, is an expert in the area of cattle heat stress. Some actions he recommends to take during an extreme heat event:

1. DO NOT MOVE ANIMALS.

2.  Observe animals for signs of heat stress.

3. Consider wetting the animals or the ground.

When wetting the animals use large droplets (150 micron diameter sprinklers) not a fine mist, and wet the animals to the hide to saturate the hair for maximum cooling effect. The water should run off the animals. Wetting is efficient where there is wind and low relative humidity. Night sprinkling may be effective. Ensure that there is adequate water to maintain cooling. Once sprinkling commences it will need to continue until the heat wave conditions abate. Be prepared to sprinkle for up to 5 days. If pens are wet, after rain for example, adding water will further increase humidity within the pen. Consider multiple sprinklers, a minimum of 3 per pen, at various locations within a pen. These sprinklers can be turned on and off in attempt to reduce mud holes. Avoid locating sprinklers around water tanks, feed bunks, or shade.

Use caution if fire trucks are used to wet cattle.  If cattle are not used to this treatment they may run away from the water, which could make the situation worse.

The soil in a feedlot absorbs and retains heat well.  Ground temperatures in the feedlot are typically 20 ? 50 °F warmer than the air temperatures.  During an extreme heat event the surface of the feedlot can exceed 150 °F.  Adding water to the ground will cool the surface as the water evaporates, but be careful not to create mud holes.

READ MORE
Previous 1 2 Next

See Comments


 
Log In or Sign Up to comment

COMMENTS

No comments have been posted



Name:

Comments:

Receive the latest news, information and commentary customized for you. Sign up to receive the AgWeb Daily eNewsletter today!.

 
 
Enter Zip Code below to view live local results:
bayer
 
 
The Home Page of Agriculture
© 2014 Farm Journal, Inc. All Rights Reserved|Web site design and development by AmericanEagle.com|Site Map|Privacy Policy|Terms & Conditions