The current industry standard, candling at day 18, means 18 days of incubation energy, setter space, and labor have already been spent on eggs that will never hatch. Early candling at day 4–7 reduces this waste but still results in incubated biological waste under EU regulation.
In broiler hatcheries, 8 to 20% of incubated hatching eggs are unfertilized. Pre-incubation fertilization detection at day 0 eliminates the incubation cost for unfertilized eggs. For hatcheries running at full capacity, this recovered space can be filled with additional fertile eggs, increasing total chick output without capital investment in new incubation infrastructure. Read more here.