Plasma cholecystokinin concentrations in 3-day-old lambs: effect of the duration of fasting preceding a sucking bout R. Nowak, P. Orgeur, V. Piketty, P. Alster, R. Andersson and K. Uvnäs-Moberg Reprod. Nutr. Dev., 37 5 (1997) 551-558 DOI: 10.1051/rnd:19970506