Aggressive behavior in two different group-housing systems for pregnant sows.

The study housed 120 pregnant sows from Day 29 of pregnancy to 1 week before parturition either in groups of 10 with trickle feeding (TRICKLE) or in groups of 20 with an unprotected electronic sow feeding (FITMIX). The study recorded aggressive interaction on 11 nonconsecutive days. Frequency of aggressive interactions was higher in FITMIX (p < .

Feeder use patterns in group-housed pregnant sows fed with an unprotected electronic sow feeder (Fitmix).

Previous studies on feeder use in group-housed pregnant sows focused on dynamic groups and protected electronic sow feeders (ESF). This study observed 60 pregnant sows, 1st to 8th parity--housed from Day 29 of pregnancy to 1 week before parturition in stable groups of 20 animals, 1 Fitmix feeder per group. Data from 25 nonconsecutive 24-hr feeding cycles showed sows making several visits to the feeder.

Evaluation of inciting causes, alternative targets, and risk factors associated with redirected aggression in cats.

Objective: To identify inciting causes, alternative targets, and risk factors associated with redirected aggression in cats.

Design: Case-control study.

Animals: 19 cats with a history of redirected aggression and 64 cats with no such history.