Acoustic environment from fattening pigs building creating and propagating of noise

ABSTRACT

The purpose was to find effect of environmental factors (distance, feeding period, and season) on the noise emissions created from pigs housing. The measurements were made in building for 1700 fattening pigs on measuring points inside or outside of barn, always in the same time. The noise records were performed 3 times at summer and 3 times at winter season on five consecutive days and data were taken in 3 periods in relation to the feeding of pigs. Differences among periods and distances were highly significant (P 0.001). Inside the building, the highest noise levels (P 0.001) were measured. The highest average levels of noise were recorded (72 ± 1.4 dB, P 0.001) in the time of feeding. There were observed higher noise levels in summer than winter, both inside and outside (P 0.01, P 0.001). The results show that the noise in the pigs housing depends significantly on the period measuring, distance from building, and on the season of year.(AU)