Porcine infection with rotavirus can cause diarrhea in piglets aged 1 to 4 weeks and is often associated with piglet diarrhea syndromes such as white piglets, milk diarrhea, or 3-week-old diarrhea. Seed pigs up to 7 days of age are often not infected.
Symptoms Clinical symptoms similar to those of infectious gastroenteritis can occur. Anorexia and diarrhea occur within 12 to 24 hours of onset. Diarrhea started with a large amount of light brown watery stools, followed by a mixture of yellow curd-like and brown clear liquids. Due to vomiting, sick pigs are most prone to dehydration and death. Natural infections often occur in piglets 2 to 3 weeks of age, with mostly hidden infections. The sick pigs presented with liquid, creamy or pasty mild diarrhea. The feces were yellow or white, with a duration of 1 to 3 days. Pigs infected with pathogenic E. coli or transmissible gastroenteritis virus at the same time have a higher mortality rate.
The necropsy shows that the stomach is full of curd, the small intestine wall is thin and transparent, and there is a lot of liquid inside. The colon and cecum are often enlarged by gray, yellow or dark liquids and the villi of the small intestine atrophy.
Prevention and control under good hygienic conditions, and allow the piglets to eat enough colostrum and milk juice, can reduce the disease. At present, there is no specific treatment for this disease, but the use of glucose-containing electrolyte solutions to the pigs can reduce the occurrence of dehydration.
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