Segregated early weaning (SEW) was initially employed as a means of eradicating disease in swine operations. However, little is known about how management factors affect the incidence of belly nosing and belly sucking in early weaned pigs. A study was designed to investigate the effects of line difference, diet from and pen enrichment of the incidence of these behaviours in piglets weaned at seven days of age. Results indicate that line difference affects the incidence of nosing and sucking behaviours in early weaned pigs.