http://orgprints.org/7060/ Outdoor multi-sire mating system: A feasible way for organic piglet production? The outdoor multi-sire mating system complies with the organic ideal of allowing animals to conduct their natural behaviour. Due to large differences in mating qualities between the teams of boars, the preliminary results of this study indicate that the system, as practiced today, is characterised by unacceptable varying reproduction results. The poor mating quality was related mainly to competition between boars, sows not able to support the weight of the boars and poor mating dexterity of some boars. To improve the system, these parameters much be taken into consideration Kongsted, Anne Grete Hermansen, John E. 7pigs 3animal 7animalhealth int_conf_joint2006_7 Outdoor multi-sire mating system: A feasible way for organic piglet production? 2006-05-09 Kongsted, Anne Grete and Hermansen, John E. (2006) Outdoor multi-sire mating system: A feasible way for organic piglet production? Joint Organic Congress, Odense, Denmark, May 30-31, 2006. other