a multi country study of vertical coordination in the hog pork industry dutch report september 1998 gw ziggers department management studies wageningen agricultural university hollandseweg 1 6706 kn netherlands 2 multy on decanethus project denmark canada and united states initiated by agri chain competence foundation paticipating institutes aarhus school business ministry agriculture mapp centre food halsgaardsvej 10 sir john carling building dk 8210 v 930 avenue ottawa ontario k1a oc5 purdue agricutltural 1145 krannert west lafayette 4907 usa facilitation rijnconsult po box 9100 15 6880 ha velp 5240 rosmalen members working group mrs l hundahl chr laurensen mr r srivastava j bamford schrader unversity