“…Additionally, piglets exposed to music had a lower expression of agonistic behaviors and an increased expression of playful behaviors [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. The expression of abnormal behaviors, such as stereotypies and excessive aggressiveness, indicate unfavorable welfare conditions [ 40 ], which are related to facility issues and improper animal management, resulting in a decrease in productive performance.…”