Development of gastrointestinal and pancreatic functions in mammalians (mainly bovine and porcine species): influence of age and ingested food Romuald Zabielski, Isabelle Le Huërou-Luron and Paul GuilloteauReprod. Nutr. Dev., 39 1 (1999) 5-26DOI: https://doi.org/10.1051/rnd:19990101