500g/ bag *30 bags/box.1. Micro-coating, not affected by feed environment: The active ingredient doxycycline in this product is made into micro-capsules by coating technology, which reduces the contact between doxycycline and feed, but not affected by feed environment. 2. Full absorption: This product is made of special coating, which can significantly enhance the lipophilic property of the drug, and can be quickly absorbed after oral administration. Moreover, after absorption of doxycycline, it can be discharged into the intestine for re-absorption through bile, with a half-life of up to 20 hours and a quick and long-acting effect.Doxycycline.It was mainly responsible for infection of porcine bacteria, mycoplasma, eosymbidiosis, chlamydia, rickettsiae, etc. 1. Respiratory tract infection in pigs: asthma, cough, dyspnea, purple ear tip and red body caused by asthma, pig lung disease, atrophic rhinitis. 2. Digestive tract infection in pigs: diarrhea, diarrhea and paratyphoid fever of piglets caused by yellow, gray, dark green or bloody excrement. 3. Postpartum infection in sows: mastitis - hysteritis - milk-free syndrome, postpartum temperature increase in sows, uterine lochia unclean, red and swollen breasts, with lumps, reduced or no lactation, etc. 4. Others: leptospirosis, chlamydia caused by pregnant sow abortion, etc.Mixed feeding: each bag of 500g mixed with 1000kg of feed , for 3-5 days continuously.