This experiment aimed to determine the influence of
milk supplementation during lactation, over 1 wk after
weaning, and of oxytocin administration for the first 14 d
life on the pigs’ feed intake, growth rate, organ weights, and
the gene expression of hormones released from the
gastrointestinal tract, with an emphasis on ghrelin, leptin,
glucagon-like peptide-1 (GLP-1), and glucagon-like
peptide-2 (GLP-2). The hypothesis of this study was that
pigs supplemented with milk, during lactation or after
weaning, or pigs administered with exogenous oxytocin
would show greater feed intake in the first 7 d after
weaning, greater growth rate, and greater expression of
these gastrointestinal hormones.