Purina Flock Raiser has Marigold extract, on the label it says Tagetes extract that is the genus Marigolds are in.Marigold extract is easily found at Health Food, Herb, or vitamins stores. Also, dried leaves are available as well. I looked for chicken feed which contains marigold extract but, was not successful in doing so. Marigold is high in antioxidants, and Lutein, which is quite beneficial for us, as well as the chickens. I use the extract, and give it to the chickens once a week on a small piece of treat.
Beautiful, fat, and adorable babies, Ron!