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The Effects Of An Evaporative Cooling System On Reducing Heat Load In Lactating Dairy Cows, J. R. Johnson, M. J. Wolf, J. Mcbride, Michael Brouk
The Effects Of An Evaporative Cooling System On Reducing Heat Load In Lactating Dairy Cows, J. R. Johnson, M. J. Wolf, J. Mcbride, Michael Brouk
Kansas Agricultural Experiment Station Research Reports
This study was conducted to evaluate the effect of 2 cooling systems on barn temperature, core body temperature (CBT), respiration rate, rear udder temperature, and lying time in lactating Holstein dairy cows. Twenty lactating Holstein dairy cows were randomly assigned to 1 of 2 treatment groups: CONV, where cows were housed in a conventional, open-sidewall freestall barn equipped with feedline soakers and fans located over the feedline and stalls; and TUNNEL, where cows were housed in a tunnel-ventilated freestall barn utilizing an evaporative cooling system. TUNNEL was effective at reducing barn temperature humidity index (THI) compared to CONV, but failed …
Use Of Evaporative Cooling Systems And Their Effects On Core Body Temperature And Lying Times In Lactating Dairy Cattle, Jared R. Johnson, Michael Brouk, L. Mendonca, J. P. Harner
Use Of Evaporative Cooling Systems And Their Effects On Core Body Temperature And Lying Times In Lactating Dairy Cattle, Jared R. Johnson, Michael Brouk, L. Mendonca, J. P. Harner
Kansas Agricultural Experiment Station Research Reports
A study was performed to assess the effect of an evaporative cooling system on respiration rates, rear udder temperature (Tu), core body temperature (CBT), and resting time in lactating dairy cows. Cows were divided into two treatment groups and rotated between two facilities. Cows were either housed in a bedded pack barn (PACK) equipped with an evaporative cooling system (Cyclone fans, Chippewa Falls, WI) or a tie-stall barn (TIE) equipped with cooling cells. Cows housed in PACK had two cooling treatments: FAN (Cyclone fans only, no fog); and FANFOG (Cyclone fans and fog on). Groups of cows rotated …