122 Bulletin UASVM Animal Science and Biotechnologies, 65(1-2)/2008 pISSN 1843-5262; eISSN 1843-536x THE INFLUENCE OF LAYER TEMPERATURE AND SYSTEM VENTILATION ABOUT AIR QUALITY ON POULTRY SHELTERS DURING 1–6 WEEKS, GROWING PERIOD Hegedős Cristina, Silvana Popescu, Anca Boaru, Gh. Stetca University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Science and Biotechnologies, 3-5 Manastur Street, 400372 Cluj-Napoca, Romania email: cristinahegedus@yahoocom Key words: chicken, layer temperature, ammonium, carbon dioxide Abstract. Our question when we started this study was if exist difference about air quality inside shelter who accommodate broiler, on all during period, having as point of starting the ventilation and heating system. INTRODUCTION The chicken growing presents particular special requirement of hygiene by first until last days of popularization. The hygiene condition it refers to maintaining the welfare in chicken population, which contain the simultaneous action of microclimate parameter in close co-operation with technological factors. In present paper we study the chemical parameter during all growing period; our target being to render evident if are or not difference referring to the air quality by chemical point of view at different location and level (breathing level, 1 m) by shelter, owing to the heating system (aerotherm) situated at 1.8 m height from layer; the air changing system present; the final aim having the general appreciation of microclimate from shelter on 2 series of poultry, 2 different season. MATERIAL AND METHODS The determination was made taking much more location from shelters, end shelters and middle shelters and also two level breathing level and 1 m distance from layer. This parameter was study of 2 times in each week, on all growing period for chemical parameter and 5 time in each week for layer temperature. The chemical parameters was defined with Dragër pomp using for each parameter who was study, indicatory tub for ammonium and carbon dioxide, and for taking the temperature from inside layer we use electrical thermometer with sounder. RESULTS AND DISCUSSIONS This researches was possible owing to system of air changing; admission orifice are situated on both longitudinal walls which represent natural ventilation supply whit artificial ventilation, represent by the present on 4 axial ventilator situated at end of shelter, by 1 at each end of shelters on longitudinal walls, in this case we could made determinations for observe if there are variation of value. Temperature from layer On first week the temperature in both series was for 22 0 . After that the temperature during growing on all period in this way, the value temperature was registered at 28.36 0 C first brought to you by CORE View metadata, citation and similar papers at core.ac.uk