Promoting feed intake of lactating dairy cattle (particularly those in early lactation) is critical in terms of improving milk production, health, body condition and welfare of the animals (Grant and Albright, 1995). Therefore a good food supply is extremely important to the modern, high producing dairy cow. Feeder design and stocking density can have a major impact on feed intake and aggressive behaviour; therefore it is an important consideration when designing housing and managing livestock. The aim of the study was to investigate if increasing space allowance at the feed-face would reduce the frequency of aggressive interactions and competition. These changes in spacing may also lead to an increase in feeding activity in the time after provision of fresh feed.