The invention discloses a pregnant sow special-purposed bioactive
feed additive, a feed premix, and a feed batch. The
feed additive is prepared through the steps that: (1) a Chinese herbal
medicine is prepared into Chinese herbal
medicine powder, wherein the
powder comprises the raw materials of, by weight: 15-30 parts of Mongolian
milkvetch root, 6-15 parts of
ligusticum, 10-25 parts of pilose asiabell root, 5-20 parts of largehead atractylodes
rhizome, 5-20 parts of licorice root, 15-30 parts of immature
tangerine fruit and dried
tangerine peel, 10-40 parts of malt, 6-15 parts of Chinese pulsatilla, 8-20 parts of prepared
rehmannia rhizome, and 16-40 parts of Szechwan lovage
rhizome; (2) 15-20 parts by weight of a bioactive probiotics
fermentation broth is uniformly mixed with 15 parts by weight of
silicon dioxide; the mixture is subjected to low-temperature
drying, such that a bioactive probiotics
solid powder preparation is prepared; (3) 90% by weight of the Chinese herbal
medicine powder obtained in the step (1) is uniformly mixed with 10% of the bioactive probiotics
solid powder preparation obtained in the step (2), such that the
feed additive is obtained. When the additive is used for feeding pregnant sows, healthy developments of fetuses in the mothers can be promoted. Also, pregnant sow
miscarriage, stillbirths, mummified pig, postnatal hunger strike,
mastitis,
endometritis, and the like can be prevented. With the feed additive, piglet
vitality and
birth weight can be improved.