Recently, there has been interest in constructing mechanical ventilation with evaporative pads to improve the environmental conditions for cows during periods of heat stress. Low profile cross-ventilated freestalls with evaporative pads (LPCV) have become a popular system. The purpose of this study was to evaluate how well these LPCV systems improve the temperature-humidity index (THI) under different ambient conditions. As ambient
humidity increases, ability of the LPCV to
reduce THI is decreased. Producers wishing to
construct LPCV barns should carefully evaluate the climate in which they want to construct LPCV structures.
