Feed for replacement gilts and preparation method of t feed

The invention belongs to the technical field of a feed, in particular to a feed for replacement gilts, which comprises the following components by weight: 50% to 60% of corns, 8% to 18% of bran, 10% to 15% of bean pulp, 10% to 15% of extruded soybeans, 1% to 2% of mountain flour, 1% to 2% of calcium hydrophosphate, 0.3% to 0.7% of fine salt, 1% to 2% of soya-bean oil, 2% to 4% of fish meal, 0.1% to 0.2% of sow multi-vitamin, 0.1% to 0.2% of sow polymineral, 0.5% to 1.5% of herbal medicines, 0.2% to 0.5% of amino acid and 0.5% to 1% of natural additive. Compared with the prior art, according to the feed for the replacement gilts, a formula of the replacement gilts is optimized, and the herbal medicines are reasonably added in the formula so as to promote the sows to heat, improve immunity and increase the ovulation quantity of the sows, so that multiple fetus and the birth number of the replacement gilts are improved, the heat and the ingravidation between the fetuses are shortened, the lifetime use ratio of the replacement gilts is improved, and the economical value of the pig farms is greatly elevated.