Animals can not synthesize the pigment itself. The study also found that fertilizer additive, only oxygenated functional groups (such as hydroxyl, acyl, keto, etc.) of carotenoids (carotenoids) class in livestock, poultry, aquatic products only within the coloring effect. Different carotenoids in different deposition efficiency in different organizations, general esterified lutein and zeaxanthin better than crystalline lutein and zeaxanthin deposition effects in animal body tissues. Dietary fat can be enhanced pigment deposition fertilizer colorants, and found that the addition of animal fat is more effective than add vegetable oil. Furthermore, with the improvement of feed pigment levels, decrease in animal tissue deposition ratio of the dye. Fertilizer coloring agents, coloring agents, Weifang Fuyuan provided by Weifang Fuyuan Environmental Technology Limited. Weifang Fuyuan Environmental Protection Technology Co., Ltd. (www.wfdafuyuan.com) strong, credible, Shandong Weifang other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Weifang Fuyuan and you hand into the brilliant, for a better future!