In the perspective of the complete ban of antibiotic growth promoters use in animal food by 2006, many alternatives have been studied. However, most of them are not yet technically and/or economically competitive with antibiotics. In this way, the incorporation of bovine colostrum in piglet diets has been studied. Bovine colostrum was chosen for its high concentration in growth promoting and anti-microbial peptides (Playford et al., 2000) and for its high availability. The aims of this study were to measure the efficiency of a bovine colostrum supplementation on growth performances of newly weaned piglets and to evaluate its effects on the digestive and immunological troubles involved by weaning (Pluske et al., 1997 and Vega-Lopez et al., 1995).