EVALUATION OF METHODS TO REDUCE FIGHTING AMONG REGROUPED GILTS

摘要: The objectives of this study were to evaluate practical methods reduce fighting among unacquainted pigs after regrouping. One hundred and forty-four gilts 95–120 kg body weight assigned groups four previously housed in slatted pens 9.71 m2 floor area for 4 d. At grouping, the animals one following six treatments: (1) Control. (2) Gilts washed Vicks was applied their nostrils. (3) A boar 150 kg with 2 d grouping. (4) 2.2 mg kg−1 Azaperone (Stresnil) injected intramuscularly 20 min prior (5) pen equipped partitions over feed trough partition back. (6) not fed that morning at weighed scored lesions beginning end trial, monitored by video recording 3 d dependent variables weights, lesion scores, time spent st...