Prevention and treatment of epidemic diarrhea in pigs

At the beginning of 2008, the weather in southern China was very cold. Some pig farms in Yangjiang, Jiangmen and other places in Guangdong Province had yellow or gray watery dung, especially piglets, accompanied by vomiting, severe dehydration, death and other symptoms. The majority of veterinary workers through clinical diagnosis, laboratory testing and other methods to determine that the disease occurred in these two places is porcine epidemic diarrhea.

Porcine epidemic diarrhea mostly occurs in the cold winter season from December to February next year, and pigs of all ages can be infected. The infection rate of suckling piglets, weaned piglets and fattening pigs is 100%, and that of adult sows is 15%-19%. Suckling piglets suffer the most, with an average fatality rate of 50%, which often spreads throughout the pig farm within 4 to 5 weeks. The pathogen of the disease is sensitive to ether and chloroform, but not resistant to external environment and disinfectants. General disinfectants can inactivate it.

The main symptoms of diseased pigs are vomiting, diarrhea and dehydration, as well as depression, anorexia, watery feces, emaciation and exhaustion.

From October to November every winter, the whole herd of sows and breeding boars were vaccinated with transmissible gastroenteritis-epidemic diarrhea vaccine, one dose per sow per month, and one dose per sow in 40 and 20 days before parturition. The piglets were inoculated 10 ~ 15 days after weaning. The effect of injection of Hai acupoint after injection of vaccine was better than that of cervical intramuscular injection.

Emergency prevention when the disease occurs in the pig farm, comprehensive disinfection should be done. Quicklime can be scattered all around the farm area to cut off the source of infection. Strengthening the work of heat preservation is the key. Generally, the effect of using thermal insulation lamp is better than burning coal, which can reduce feeding and give more drinking water when the disease occurs. Prevent body dehydration, acidosis, antibacterial and anti-inflammatory, stop diarrhea and replenish fluid.

When the disease occurs, the transmissible gastroenteritis-epidemic diarrhea vaccine can be inoculated urgently, or 50 portions of chicken plague Ⅰ vaccine can be injected intramuscularly to make it produce interferon.

Antibiotic therapy allowed pigs to drink oral rehydration salt solution with a formula of 20g glucose, 3.5g sodium chloride, 2.5g sodium bicarbonate and 1.5g potassium chloride in 1000 milliliters of water. Whole group medicine, mix: antiviral No. 1 1000 grams + doxycycline 400g + immunocrystal protein + synergistic sulfonamide dimethyl 600g + glucose 10kg + multi-dimensional, continuous use for a week. Individual piglets with particularly serious illness can be infused with antibiotics plus rehydration salt, and severe sows can be given by intravenous injection.