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Heat and Moisture Production of Commercial Broilers under Pad Cooling or Surface Wetting in Summer

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

Citation:  2012 IX International Livestock Environment Symposium (ILES IX)  ILES12-1478.(doi:10.13031/2013.41574)
Authors:   Y Liang, G Tom Tabler, I Berry, S Watkins
Keywords:   heat production, moisture production, cooling, broiler, poultry

Evaporative cooling of ventilation air to ameliorate heat-stress of livestock and poultry in summer has been widely adopted in the Southern broiler production area in the U. S. However, water usage can be high, and cooling effect may not be satisfactory under humid condition. Intermittent surface wetting system in tunnel ventilated (TV) broiler houses were evaluated side-by-side with evaporative cooling system in commercial production settings during five flocks in summer months over three years. Data collected in the evaluation were calculated for house-level sensible and latent heat loads. Despite the total specific heat production rates of houses using two types of cooling system were equivalent under the testing conditions, the partitioning of sensible and latent heat loads were different. Sensible heat load dominated during day time in houses using evaporative cooling pads and TV, while latent heat load were the primary pathway of heat loss in houses using surface wetting and TV.

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