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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Sources acoustic noise and bio noise in breeding pigs
 VESELÝ, Vojtěch
This bachelor thesis' aim was to measure acoustic noise in swine-breeding farms with fattening pigs barn. We have measured acoustic noise and bionoise in the barn with ventilators on and off. We have chosen two swine-breeding farm - UNIAGRA Jarošovice v Čihovicích v Týně nad Vltavou in the fattening pigs barn. The acoustic and bio noise was measured for one minutes and process was registered every 5 minutes. We have measured in 3 places and at the starting, middle and the end in every barn at the same time of the day. Results were put in graphs and the progress of individual curves was then compared. For all graphs of measured values were determined minimum and maximum and the calculated equivalent sound pressure level. We have found out, that the acoustic noise and bio noise was higher in barn in Chmelná, whether whereas it is bigger barn than in Čihovice and already for the reason that there are more ventilators, when shutdown ventilators, nervous pigs.
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Sources of noise and bionoise in livestock buildings for dairy farming
 BUŇATA, Miroslav
The bachelor thesis deals with the identification and measurement of noise and bionoise sources in livestock buildings for dairy farming. For this measurement were selected farms in my area: Agricultural cooperative Vysočina Želiv, SENAGRO a. s. The measurement was carried out gradually in both companies, which measured the noise and bionoise source. The results determined the minimum and maximum values of noise levels and calculated the corresponding equivalent level of acoustic pressures, which they brought to each graph. The resulting values were compared with the current legislation and in the case of long-term exceeded the maximum specified limit of noise; it was proposed steps to reduce noise levels in the workplace.
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