[Effect of different stall partition equipment feed type on the frequency of aggression and changing of places in pregnant sows]

aggressive behaviour aliment pour animaux alimentation bites cercado cerdas communication animale communication between animals comportamiento agresivo comportement agressif cornadis cornalizas establos estructura social feed racks feeding feeding frequency feeds fencing frecuencia de las comidas gestation largura length longueur mordeduras morsure noruega norway piensos piggeries pocilga porcherie pregnancy social structure sows stalle stalls structure sociale truie