Scale pig farm pig infectious gastroenteritis
Porcine transmissible gastroenteritis is a highly infectious bowel disease caused by a coronavirus. The incidence and mortality of piglets are generally high, especially in piglets up to 10 days of age. The incidence and mortality of other pigs are low. The disease occurs in the form of sporadic or epidemic, spread rapidly, and is more common in the spring birth season. Sows, boars and fattening pigs generally exhibited transient fever (mainly apparent faecal dryness), after which individual pigs vomited, pulled softer feces, and quickly returned to normal. However, in recent years there have been cases of acute miscarriages and deaths in very few sows; diarrhea occurs in piglets within 16 to 24 hours of infection, followed by severe watery diarrhoea. The stools are white, yellow-white or yellow-green. The pigs are severely dehydrated, have sunken eyes, dry skin, lack of strength, long hair, and rapid weight loss. They often die within 2 to 3 days, and can quickly cause death within 1 day. Mortality decreases with increasing age of infection. According to statistics, the mortality rate is 100% between the ages of 1 and 5 days, the mortality rate is 62.5% between the ages of 6 and 10 days, and the mortality rate is between 60% and 11 to 20 days, and 21 to 45 days of age. The mortality rate from 46 to 49 days of age was 29.8% and 4.9 percent, respectively, and the shelf life of pigs above 91 days of age was very low.
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