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In early winter, farmers must guard against swine choking disease

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Pigs of different ages, sexes and breeds can all be infected. Although the disease can occur in all four seasons, it is more common in the early winter when the climate is changeable, and it often occurs as a mixed infection or secondary infection with swine fever virus and Mycoplasma hyopneumoniae. The most acute cases can die within a few hours, before there is time for treatment. In acute cases, the main symptoms are septicemia and acute pleuropneumonia. Body temperature rises to 41°C, the pig is listless, appetite is completely lost, coughing and wheezing occur, breathing is difficult with a sitting-dog posture, the nostrils discharge a serous secretion, and the conjunctiva has a purulent secretion. First constipation, then diarrhea. In the later stage

Pigs of different ages, sexes and breeds can all be infected. Although the disease can occur in all four seasons, it is more common in the early winter when the climate is changeable, and it often occurs as a mixed infection or secondary infection with swine fever virus and Mycoplasma hyopneumoniae. The most acute cases can die within a few hours, before there is time for treatment. In acute cases, the main symptoms are septicemia and acute pleuropneumonia. Body temperature rises to 41°C, the pig is listless, appetite is completely lost, coughing and wheezing occur, breathing is difficult with a sitting-dog posture, the nostrils discharge a serous secretion, and the conjunctiva has a purulent secretion. First constipation, then diarrhea. In the later stage, the skin becomes congested or has small bleeding spots, breathing becomes more difficult, and death is mostly due to suffocation; those that do not die often turn chronic. The course of the disease is 4-6 days. In chronic cases, there are symptoms of enteritis and pneumonia, persistent coughing, difficult breathing, and a purulent secretion from the nostrils. Long-term diarrhea and gradual emaciation. Sometimes scab-like eczema appears on the skin, along with joint swelling and lameness. Most die of exhaustion after 2-4 weeks, and 30%-40% of the cases can gradually recover, but growth and development often stagnate.

Prevention: Pig houses should be regularly disinfected with 10% lime milk or 30% hot wood ash water. Healthy pigs are injected once each in spring and autumn with swine pasteurellosis vaccine. When sick pigs are found, they should be isolated immediately, disinfected strictly, the epidemic area sealed off, and carcasses destroyed.

Treatment: (1) Penicillin, at 8000-10000 units per kg of pig body weight, intramuscular injection once every 4 hours, for 7 consecutive days. (2) Streptomycin, large pigs injected 4 grams per day, medium pigs 2-3 grams, small pigs 1-2 grams, divided into 2 injections per day, for one consecutive week. (3) With 20% sulfadiazine sodium, large pigs injected 30-40 milliliters per day, medium pigs 20-30 milliliters, small pigs 10-20 milliliters, intramuscular injection twice daily, for 4-6 consecutive days, until fully recovered. (4) Oxytetracycline hydrochloride, 30-40 milligrams per kg of body weight, dissolved in normal saline or injection water, intramuscular injection, twice daily. After body temperature and appetite return to normal, one more injection is still needed. (5) Tetracycline dissolved in 5% glucose sodium chloride, with hydrocortisone or dexamethasone added at the same time, intravenous injection, once daily. (6) Early-stage treatment with Chinese herbal medicine: 15 grams each of honeysuckle flower, weeping forsythia fruit, purple gromwell root and mirabilite, 12 grams of dwarf lilyturf tuber, 9 grams each of skullcap root, rhubarb, tree peony bark, blackberry lily rhizome, subprostrate sophora root and thunberg fritillary bulb, decocted in water and given orally.

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