Effect of chromium yeast supplementation on performance, reproduction and immune function in pigs Giovanni Savoini, Federica Cheli, Valentino Bontempo, Antonella Baldi, Francesco Fantuz, Iani Politis and Vittorio Dell'OrtoAnn. Zootech., 47 4 (1998) 273-278DOI: https://doi.org/10.1051/animres:19980403