Feed for relieving combined poisoning of cadmium and lead for laying hens, premixes, and preparation methods thereof

The present invention discloses a feed for relieving combined poisoning of cadmium and lead for laying hens. The feed comprises the following components: corn, soybean meal, soybean oil, calcium carbonate, calcium hydrophosphate, edible salt, choline chloride, compound multi-vitamins, mineral premixes, DL-methionine, probiotics, an organic acidifying agent and premixes. The premixes comprise the following components: tea polyphenols, natural vitamin E, vitamin A, vitamin C, yeast selenium, canthaxanthin, 25-hydroxyl-D3 and rice chaffs. A preparation method is as follows: the corn and soybean meal are crushed to a particle size of 1,500 [mu]m, and then each of the components is mixed evenly in a step-by-step method to prepare the compound feed. The feed solves the problems of reduced production performances and deteriorated eggshell quality due to the combined poisoning of the cadmium and lead for the laying hens, can improve the anti-oxidation ability of the commercial laying hen organisms, and alleviates the