For the chicks and hens alike, D3, E, and B complex vitamins contribute to a healthy immune system, as well as increasing energy levels and appetite after a period of stress.
B vitamins play a vital role in maintaining good health and well-being. As the building blocks of a healthy body, B vitamins have a direct impact on your energy levels, brain function, and cell metabolism. Vitamin B complex helps prevent infections and helps support or promote cell health.
The body needs its B vitamins. And it's worthwhile to supplement B12 and folate if you need it. Though keep in mind that most people are likely getting what they need from their diet.