A recently published study by Mikulski et al. shows the positive effect of the probiotic strain Pediococcus acidilactici CNCM I-4622 (MA 18/5M) (BACTOCELL, Lallemand Animal Nutrition) on energy use in laying hens. The hens received a feed with 100 kcal ME/kg less energy. The addition of the probiotic compensated for the negative effect on laying performance. The authors concluded that the probiotic feed supplement had a positive effect on the energy use of the feed and increased feed efficiency in laying hens.   Energy is a major driver of feed costs in poultry production. These new findings offer egg producers and feeding experts a new tool to control production costs. The study concluded that supplementing Pediococcus acidilactici CNCM I-4622 in a single-energy reduced ration can be a viable strategy to reduce feed costs while maintaining laying performance and egg quality The study was conducted at the University of Olzstyn in Poland with the aim of determining the effect of the probiotic in rations with different energy levels on the production performance of laying hens.