The invention discloses compound feed for pregnant sows in expected date of delivery. The feed is prepared by smashing and mixing following raw materials by weight: 55-65 parts of corn, 8-15 parts of soybean pulp, 2-10 parts of corn
gluten powder, 3-8 parts of malt sprout, 0-3 parts of
soybean oil, 2-8 parts of middlings, 3-5 parts of full-fat soybean, 0-8 parts of wheat
bran, 0.4-0.6 part of a microelement premix, 0.4-0.6 part of a
vitamin premix, 1.0-1.5 parts of
calcium hydrophosphate, 0.2-0.4 part of edible salt, 0.5-1.0 part of stone
powder, 0.2-0.5 part of
lysine, 0-0.2 part of
threonine, 0.08-0.1 part of
tryptophan, 0.3-0.8 part of
yeast culture, 0.1-0.12 part of
choline and 0.1-0.4 part of
magnesium sulfate. According to the feed, requirements of rapid growth of
fetus in the latter half period of
gestation of the sows are met, and reasonable birth weights and
vitality are guaranteed; contraction functions of uterine and intestinal smooth muscles of the sows under the condition of high
abdominal pressure are guaranteed; problems, namely difficult delivery, prolonged delivery, postpartum triad syndrome, and the like, occurred to the sows during delivery and
lactation are reduced; and sow production performances are improved.