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Shade Structure Design and Evaluation
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Paper number 131595866, 2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: http://dx.doi.org/10.13031/aim.20131595866) @2013
Authors: Roger A. Eigenberg, Tami M. Brown-Brandl, Morgan Hayes
Keywords: Feedlot; shade materials; design
Abstract: Shade structures are often considered as a method of reducing heat stress in feedlot cattle during extreme summer conditions. Design and material selection present challenges to meet a range of criteria that include: cost, effectiveness, durability, low maintenance, and minimal interference with normal feedlot management. The design described in this paper integrates animal/shade response data collected over the last decade. Eight 10 m tall by 15.4 m long structures were installed at the USMARC feedlot. The north/south structures were fitted with four 15.4 m lengths of poly snow-fence. These structures provide an effective 50% shade coverage that tracks the sun during the day and offers up to 3 m2 of shade per head. Design considerations, construction materials and methods are presented as well as preliminary observations based on time-lapse photography of animal movements.
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