The Flemish pig rearing companies have a number of important technical-economic challenges: perinatal piglet mortality is high, the rearing of increasingly large litters is a major challenge, and the abrupt weaning of piglets causes a drop in performance and an increased susceptibility to infections. The PROJECT aims to introduce and optimize innovative concepts in the rearing of piglets, with the aim of obtaining more resilient piglets in a cost-effective way. 'Resilience' is defined as the ability of the animal to restore equilibrium under normal physiological conditions if it is disrupted. The proposed concepts are: 1 / interventions in the neonatal piglet (alternating suckling, drenching of bioactive substances), and 2 / interventions in preparation for weaning (group rearing in maternity ward with stimulation of foraging behavior).