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Detailed Explanation of Key Technical Points for Feeding and Management of Lactating Sows

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1. Sows enter the farrowing house 7 days before farrowing; keep the farrowing room dry, clean and hygienic, and gradually reduce the feed amount; for those in poorer body condition, reduce the feed less or not at all; 2. Before farrowing, wash the sow's udder and vulva, then scrub and disinfect with a 0.1% potassium permanganate aqueous solution; after farrowing, inject one dose of penicillin and streptomycin to prevent perinatal diseases; in high-temperature seasons, one week before farrowing, give the sow an intramuscular injection of cod liver oil-antibiotic mixture to prevent high-temperature syndrome; 3. During the farrowing process, the sow must be carefully attended by a dedicated person, and during delivery assistance

1. Sows enter the farrowing house 7 days before farrowing; keep the farrowing room dry, clean and hygienic, and gradually reduce the feed amount; for those in poorer body condition, reduce the feed less or not at all;

2. Before farrowing, wash the sow's udder and vulva, then scrub and disinfect with a 0.1% potassium permanganate aqueous solution; after farrowing, inject one dose of penicillin and streptomycin to prevent perinatal diseases; in high-temperature seasons, one week before farrowing, give the sow an intramuscular injection of cod liver oil-antibiotic mixture to prevent high-temperature syndrome;

3. During the farrowing process, the sow must be carefully attended by a dedicated person; during delivery assistance, keep the environment quiet, clean and dry, warm in winter and cool in summer, and strictly prevent high temperatures in the farrowing room; if dystocia occurs, oxytocin is usually injected intramuscularly, with a dosage of 10-20 units each time; if no piglet is delivered after 30 minutes, manual assistance should be performed; after farrowing, it is best to perform uterine washing and inject prostaglandin (a one-time intramuscular injection of 2 mL of PGF2alpha 36-48 hours after the last piglet is born) to help with the discharge of lochia and uterine involution, which also helps the sow to return to estrus after weaning;

4. On the day of farrowing, do not feed the sow any feed, only bran salt water or bran electrolyte water; within 1 week, the feed amount should be gradually increased, and once the feed amount is normal, the sow's feed intake should be maximized; follow the principle of "feed small amounts frequently" and strictly prohibit feeding moldy feed; during lactation, also provide sufficient clean drinking water to prevent constipation in the sow, which would affect feed intake;

5. Check the sow's udder promptly, and take timely measures to treat sows that develop mastitis;

6. Reduce the feed amount 2-3 days before weaning, feed less or not at all on the day of weaning, and appropriately reduce water intake; only after wrinkles appear on the udder 2-3 days after weaning can the feed amount be increased and flushing feeding begin; this can prevent sows from developing mastitis after weaning.

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