Golden yolk colour comes from healthy hens.

Golden yolk color comes from healthy hens. Color is one of the most important factors that affect consumer choices through the sensory evaluation of food, including egg yolks. Optimal hen health is required for the efficient deposit of color-influencing carotenoids in eggs. Good results when rearing laying hens are greatly influenced by the birds’ viability and health. A good sanitary programme, including vaccination, must be implemented in order to obtain the best protection during the rearing phase. The poultry house environment parameters must also be managed in order to create the best conditions for the good welfare of the birds. Nevertheless, laying hens are sometimes affected by health issues due to parasites (coccidiosis), worms, viruses or pathogens that can affect the gut, in particular, thus hampering the absorption of carotenoids and leading to pale egg yolks. A bright yolk color can therefore be considered as an indicator of the good health and performance of the flock.