How to brighten the coat color of broilers?

Today's farmers are very demanding, so let me ask you for advice: how can we brighten the coat color of broilers?-- Yes. Farmers are the God of our herdsmen-grease vitamin satisfaction-! This is also required! Too much! The amino acid balance is fine. You tell the farmers not to feed hard when the market is good. When the market is bad, the formula of the feed factory is calculated by the formulator. The proportion of farmers who blindly change the proportion is naturally not good-- you can add a variety of vitamins and oils. Wait for the material-- I want to ask Brother Chicken Feather. How can the addition of oil affect the color of chicken coat? what is the mechanism? Thank you-- what kind of breeds do you mainly raise there? If you are interested, you can email me to exchange 63311393 qq.com-the main breeds of chicken are: local breeds with green feet and white skin-adding a variety of vitamins and amino acids. Quoted from wangyong000216 published in 2009-6-26 08:47, "Chicken feathers want to ask Chicken Feather Brother, how can the addition of oil affect chicken coat color, and what is the mechanism? Thank you. It is good for the absorption of fat-soluble vitamins. The amount of folic acid can be appropriately increased to 6mg-all the indicators in the feed should be met. Can consider the additive, cysteamine is very good! Add a little oil to the formula, mix the feed with more dimensions, and let the broilers bask in the sun.