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Shade Structure Design and Evaluation

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  131595866,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: @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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