A natural colorant that can brighten the color of chicken skin fat.

The commonly used natural colorants and their additions are: 5% alfalfa powder, 5% pine needle powder, 5% Robinia pseudoacacia leaf powder, 0.3% red chilli powder, 0.3% marigold powder, 0.5% to 0.7% calendula petal powder, 2% dried tangerine peel powder, 2% dried Laver powder, 1% to 2% dried cow dung powder, 3% shrimp powder, 6% silkworm sand, etc. In addition, the addition of synthetic oxidized carotenoids such as β-apu-carotene aldehyde, β-apu-8-carotene 39-carotene acetate, bantharidin, lemon yellow and some antibiotics such as oxytetracycline and chlortetracycline in chicken feed can also improve the color of chicken skin, fat and eggshell and increase its commercial value.