IGF-I, IGFBP-2 and -3 but not GH concentrations are different in normal and poor growing piglets Roberta Saleri, Mario Baratta, Gian Luca Mainardi, Robert Renaville, Andrea Giustina, Fausto Quintavalla and Carlo Tamanini Reprod. Nutr. Dev., 41 2 (2001) 163-172 DOI: 10.1051/rnd:2001119