When piglets don’t get enough milk in the first weeks of life, the chances of them thriving dramatically decline. In the U.S. pork production system, piglets with limited access to their mothers’ milk are typically “cross-fostered” with other sows. But in the EU, a different solution is gaining ground. In certain circumstances, underfed piglets are artificially reared with milk replacer, mimicking feeding setups used in biomedical research.