Except for summertime, we rely on food sources to supply our body with enough vitamin D. A team of German researchers at Martin Luther University Halle-Wittenberg developed a new practice to increase the vitamin D content of eggs. Using UV light, they increased the vitamin D content of eggs by three- to four-fold. Practices used in the study could be implemented in poultry operations immediately.
Source: The Poultry Site, June 29, 2019. Link. “Humans cannot see UV light, but chickens can. Therefore, light regimes are a critical aspect in chicken husbandry because light influences behaviour and laying activity,” explains Professor Eberhard von Borell, an expert in animal husbandry at MLU.