Shade for cattle

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The dog days of summer will soon be upon us and feedlot cattle are often under stress when the high temperatures exceed 85 degrees. Cattle feeders with hoop buildings and mono slope observe near constant feed intakes and gains thorough out the summer as a result of the shade the buildings provide. Open feedlots can receive many of the same benefits by providing shade during the summer months. Dark colored cattle will benefit the most from shade and are often the type many Iowa feedlots prefer to feed.

The remainder of this article will discuss the following considerations when designing shade for open lots: cost and benefits, space and location, construction and management.

Cost and benefits
The cost of shade cloth is about $.20 a square foot and the recommendation would be 20 square feet per head for a total of $4.00 a head. The post and support structure and labor to build it will probably cost twice that much for a total of $12.00 a head. Reducing the heat death loss by 1% would pay for the cost of the shade in one year, with better feed conversion and more even intakes all bonuses. The cattle will seek out the shade allowing the operator to better manage the location of the manure and proximity to the feed and water.

Space and location
Cattle will rest under the shade during the day and should be 20 square feet per head. It should be located close to the feed bunk and water supply so that they will be easy to observe and limit exercise on hot days. This area will receive more waste accumulation making it cooler with the evaporation, but should also be in a convenient location to box scrape on a regular basis.

Construction and management
The considerations when constructing the shade are going to be building it high enough so that all equipment can pass under it with sufficient clearance. Post and poles need to with stand the rubbing of the cattle and the equipment bumping it. In many cases it is constructed with recycled structural wood or steel that is on the farm. The shade should cover 80% to 100% of the area. Shade cloth is often held up with cables and ropes and stretched rubber straps. It is not going to withstand the 80 mph winds that a normal building design would. There are reports of recycled metal roofing hurting cattle in high winds when build for shade. Remove any sheets that are loose to prevent cattle injury. In most cases their needs to be at least 2 feet of additional clearance between post and the box scraper to facilitate cleaning under it with clearance on the ends to turn. Shade cloth is often removed and stored after October 1 when the weather is cool and the risk of high winds goes up. If you have specific questions call your ISU Extension and Outreach beef specialist or Agricultural Engineer.



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Chris    
Georgia  |  August, 15, 2013 at 11:55 AM

I make shade cloth for cattle. If anyone needs it some shade please contact me. the website is shadeforanimals.com Thanks, Chris


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