The aim of the present work was to study the productive performance of nursery pigs when
sweet milk whey (SMW) is replaced by porcine digestive peptides (PDP; 620 g/kg of CP,
Bioibérica SA, Palafolls, Barcelona, Spain). A total of 240 pigs were randomly distributed
after weaning into 2 groups (12 pens/group) depending on the presence of SMW or PDP on
their diets. The SMW group was fed a pre-starter (0-14 d) and starter (15-33 d) diet with 142
g/kg and 49 g/kg SMW respectively; the PDP group was offered an iso-caloric and iso- ...