Composite premixed fodder for replacement gilts and feeding method of fodder

The invention discloses a composite premixed fodder for replacement gilts and a feeding method of the fodder. The composite premixed fodder comprises the following components in percentage by weight: 2-3.7 percent of a trace element premixed fodder, 7.5-12.5 percent of edible salt, 20-35 percent of calcium hydrophosphate, 20-35 percent of mountain flour, 5-12.5 percent of lysine, 1-3 percent of methionine, 2.5-5 percent of threonine and 20-50 percent of a carrier, wherein the trace element premixed fodder contains the copper element, the iron element, the zinc element, the manganese element, the selenium element and the iodine element. The composite premixed fodder for the replacement gilts contains various trace elements and mineral substances, and the composite premixed fodder is mixed with corn, wheat brans and soya bean meal in a certain proportion to form a complete feed for the replacement gilts; according to the feeding method of the fodder, healthy growth of reproductive organs of the gilts can be pro