Effectiveness of additional mechanical ventilation in naturally ventilated dairy housing barns during heat waves


O. Izhboldina, R. Mylostyvyi, O. Khramkova, O. Pavlenko, N. Kapshuk, O. Chernenko, A. Matsyura, G. Hoffmann

We presented an algorithm to predict the temperature-humidity index in a naturally ventilated barn. We found that use of additional accelerating fans reduced the temperature-humidity index in a naturally ventilated barn by 0.4-1.0 units and surface temperature of dairy cows by 0.4-0.5°C in the hottest period. We also revealed the limitations of suggested model in assessing the effectiveness of additional mechanical ventilation in the barns. Slight decrease of temperature-humidity index in animal keeping area and cooling of cattle body surface should be further enhanced, especially during the heat waves.

Key words: Microclimate of barn; Body temperature of cows; Cooling; Modeling; Algorithm



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