Environmental Comparisons of Swine Performance as Affected by Shaded and Unshaded Wallows1

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Abstract
Results obtained over 3 years in which comparisons were made of pigs' response in a naturally hot environment (mean daily temperature 91° F.) modified only by the use of either a shaded or unshaded wallow (all animals had access to other shade) indicated consistent and significant increases in average daily gain and daily feed consumption for pigs provided with the shaded wallow. Rectal temperatures and respiration rates were higher for pigs with the unshaded wallow. Wallow water temperature during the hottest part of the day (10 a.m. to 5 p.m.) averaged 10° F. lower in the shaded wallow. Comparatively little use was made of the unshaded wallow after the water temperature reached 95° F. Copyright © . .

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