The selection for hyperprolific sows led to an inadequacy between the number of fetus and the uterine capacity. This phenomenon results in impaired placental development and therefore impaired development of some fetuses. The so-called Intra Uterine Growth Retarded (IUGRIntra-uterine growth retardation, is defined as the impaired growth of the fetus or its organs durin…) piglets display greater early postnatal mortality and morbidity risks, impaired postnatal growth, impaired carcass and meat quality traits. From an animal welfare as well as from a production efficiency point of view IUGRIntra-uterine growth retardation, is defined as the impaired growth of the fetus or its organs durin… piglets are problematic.