[e.g., in 1 Danish herd study, reporting
greater sow feed intake combined with signifi cantly (4%)
greater piglet weaning weight of loose-housed sows (n =
284) than of crated sows (n = 288), with the average
number of weaned piglets per litter (10.4) and weaning
age (24 d) being equal in the 2 types of housing systems
(Moustsen and Poulsen, 2004)].