Influence of Wind on Air Movement in a Free-Stall Barn During the Summer Period / Wpływ wiatru na ruch powietrza w oborze wolnostanowiskowej w okresie letnim

Piotr Herbut 1 , Sabina Angrecka 1  and Grzegorz Nawalany 1
  • 1 Department of Rural Building, University of Agriculture, 30-059 Kraków, al. Mickiewicza 24-28, Poland


Use of natural ventilation in the barn should lead to optimal microclimatic conditions over the entire space. In the summer, especially during hot weather, higher air velocity cools cows, which helps to avoid heat stress. The paper presents the results of studies on the evolution of air movement in a modernized free-stall barn of the Fermbet type with the natural ventilation system during the summer period. Based on measurements of velocity and direction of air flow (inside and outside the barn) and observations of smoke indicator, the movement of air masses in different parts of the barn was identified. Significant variations of air flow at different levels of the barn were found. These differences deviate from the accepted patterns of natural ventilation, which can be found in the literature. The range of a draught and stagnant air along with the conditions in which they are built was determined. On this basis, recommendations regarding the location of barns on the plots and the improvement of ventilation in summer were made.

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  • Albright L.D., Timmons M.B. (1984). Behavior of dairy cattle in free stall housing. Trans.

  • ASAE, 27: 1119-1126.

  • Armstrong D.V. (1994). Heat stress interaction with shade and cooling. J. Dairy Sci., 77: 2044-2050 Brouk M.J., Smith J.F., Harner J.P. (2001). Freestall barn design and cooling systems. Kansas State University.

  • Chastain J.P. (2000). Design and management of natural ventilation systems. Proc. 2000 Dairy Housing and Equipment Systems: Managing and planning for profitability. NRAES publ., 129: 147-163.

  • Cook N.B., Bennett T.B., Nordlund K.V. (2005). Monitoring indices of cow comfort in freestall housed dairy herds. J. Dairy Sci., 88 (11): 3876-3885.

  • Herbut P. (2010). Air movement characteristics insideacow barn with natural ventilation under nowind conditions in the winter season. Infrastructure and Ecology of Rural Areas, 11: 159-164.

  • Jaśkowski J.M., Urbaniak K., Olechnowicz J. (2005). Fertility disturbances caused by heat stress in cows - prophylactic measurements (in Polish). Życie Weter., 80 (1): 18-21.

  • Lautner M., Miller A.M. (2003). Kuehe lieben keine heissen Tage sondern kuhlen Kopf. Nachrichtsblatt. Besammungsbv Neustadt a. d. Aisch., 149: 23-25.

  • Lorenz H. (2005). The Climate Atlas of Polish (in Polish). Warszawa. IMGW.

  • Ośródka L., Godłowska J., Hajto M., Krajny E., Rozwoda W., Wojtylak M. (2010). Determination of the anemological conditions for the area of Krakow based on data from observation and measurement network (in Polish). IMGW Warszawa, oddz. Kraków, pp. 5-7; 15.

  • Palmer R.W. (2005). Design of large scale dairy cattle units in relation to management and animal welfare. In: Knowledge transfer in cattle husbandry: new management practices, attitudes and adaptation, 117: 173-174.

  • Ray D.E., Jassim A.H., Armstrong D.V., Wiersma F., Schuh J.D. (1992). Influence of season and microclimate on fertility of dairy cows inahot-arid environment. Int. J. Biometeorol., 36 (3): 141-145.

  • Reppo B., Mikson E., Vaarak V. (2004). Relation between the indoor and outdoor climate in uninsulated cowsheds. J. Agric. Sci., 17 (2): 120-125.

  • Romaniuk W., Overby T., Domasiewicz T., Głaszczka A., Mazur K., Wardal W., Rudnik K., Winnicki S.B., Eymontt A., Rasmussen J.B., Nielsen N.A.H., Pedersen J., Frederiksen H., Brikkjaer K.O., Jepsen L., Morsing S. (2005). Systems of maintenance of cattle (in Polish). Reference book. Collective work. Project PHARE. Standards for agricultural holdings. IMBER, DAAS.

  • Solan M., Józwik M. (2009). The effect of microclimate and management system on welfare of dairy cows (in Polish). Wiad. Zoot., 1: 25-29.

  • Spiers D.E., Spain J.N., Sampson J.D., Rhoads R.P. (2004). Use of physiological parameters to predict milk yield and feed intake in heat-stressed dairy cows. J. Therm. Biol., 29: 759-764.

  • Teye F.K., Hautala M., Pastell M., Praks J., Veermäe I., Poikalainen V., Pajumä - gi A., Kivinen T., Ahokas J. (2008). Microclimate and ventilation in Estonian and Finnish dairy buildings. Energ. Buildings, 40: 1194-1201.

  • Wathes C., Jones C., Webster A. (1983). Ventilation, air hygiene and animal health. Vet. Rec., 113: 554-559.

  • Zähner M., Schrader L., Hauser R., Keck M., Langhans W., Wechsler B. (2004). The influence of climatic conditions on physiological and behavioural parameters in dairy cows kept in open stables. Anim. Sci., 78: 139-147.


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