Traditional Chinese medicine feed additive suitable for pregnant sows and application

The invention discloses a traditional Chinese medicine feed additive suitable for pregnant sows and an application, and belongs to the field of feed additives. The traditional Chinese medicine feed additive consists of the following components in parts by weight: 10-30 parts of radix codonopsis, 10-30 parts of bighead atractylodes rhizomes, 5-20 parts of radix angelicae sinensis, 5-20 parts of common sinopodophyllum fruits, 15-35 parts of glossy privet fruits, 5-15 parts of licorice roots, 1-3 parts of protogen and 2-5 parts of NCG (N-carbamylglutamic acid). The additive is added to a feed according to the weight of the additive being 0.6% of that of the feed at 30 days before birth of the sows, so that the pitocin content and the prolactin content in serum of the sows can be increased, the birth process and the farrowing interval of the sows are shortened, the healthy piglet rate and the average daily gain (ADG) of piglets are increased, the postpartum recovery of the sows is promoted, and effects are signif