Fig. 6From: Trends in in ovo sexing technologies: insights and interpretation from papers and patentsMelanin vs. phaeomelanin absorption on incubation d 14 using VIS–NIR. At indicated wavelengths, females (red line) with eumelanin pigmentation have a higher light absorption (i.e., the logarithm of the inverse of the transmission). The selected wavelength range indicates the relevant window for sexual determination (Adapted from [160])Back to article page