Barrows (n = 28; initial BW = 25 kg) from Landrace × Yorkshire sows (Topigs, Winnipeg, MB, Canada) and Duroc boars (Comparts Boar Store, Nicollet, MN) were surgically fited with a T-cannula at the distal ileum following reference procedures
(Dilger et al., 2004; Jendza et al., 2011)