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This experience was conducted to test and study the pig behavior and welfare in
their competition for the facilities (feeders, drinkers and rooting machines), analyzing as
much as possible the drinking, feeding and rooting behaviors in two different pen sizes
(single/double) and animal densities.
Video observations during 3 months (January, February and March of 2007) were
made in twelve pens with different number of animals to study behavior measures in the
different densities of 1.2, 1.8 and 2.4 m2 per animal. The observations follow the fattening
period until the days before the slaughter.
The results reached help to conclude that agonistic, interactive, inactive and
sexual behaviors between pigs are generally higher in single pens, in the feeders and in
the 1.2 density group.
The drinkers were the facility where less behavior was detected. The feeders
are the facility where pigs are generally more aggressive and the total number of
aggressive interactions in the feeders is also affected by group size and number of
hoppers. The rooting machine beside some significant agonistic behavior observed,
promotes the socialization between pigs, and consequently is a good device to decrease or
avoid behaviors of frustration and stress.
The results reached in this trial are similar to other studies made before with