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Pig Vocalizations Under Selected Husbandry Practices, Hongwei Xin, James A. Deshazer, D. W. Leger
Pig Vocalizations Under Selected Husbandry Practices, Hongwei Xin, James A. Deshazer, D. W. Leger
Hongwei Xin
Acoustical characteristics of vocalizations of sows, piglets, and nursery pigs under selected husbandry practices were analyzed with a digital signal processing system. The duration (D) and major energy-resonance frequency (P) for each call were determined as follows: a) processing of piglets (D = 0.81 s and f* = 3 700 Hz); b) food anticipation of breeding-gestation sows (2.50 s and 3 000 Hz); c) isolation of piglet (0.34 s and 500, 3 500 Hz); d) startling of nursery pigs (0.29 s and 900 Hz); e) sows in heat (3.07 s and 1 375 Hz); f) farrowing (0.10 s and 3 …