African swine fever is a highly contagious viral disease that is very harmful to pigs. In the early stage, African swine fever usually shows some obvious symptoms, which can help us find and take measures to control the spread of the disease in time.

The initial symptoms of African swine fever mainly include: loss of appetite, pigs may become quieter than usual and reluctant to eat; elevated body temperature, up to 40-42 degrees Celsius; conjunctivae of the eyes are flushed and secretion of mucous tears; nasal lenses are dry and black or brown secretion appears; red or purple hemorrhages appear on the skin of the limbs and the abdomen; by touching the ears and the abdomen and other parts of the pig, you may feel the The pig's skin is hard.

If pigs are found to have the above symptoms, immediate measures should be taken, such as isolating the sick pigs, thoroughly disinfecting the barn, and prohibiting the circulation of pork products. Meanwhile, veterinarians should be contacted immediately for examination and treatment to avoid the spread and transmission of the disease.