Of blue ear pig disease after infection common symptom is calorific, the temperature of 40.0 ~ 41.5 degrees, the body skin cyanosis, hemorrhage, serious skin with violet cyanosis, ear is violet cyanosis. But these symptoms easy and other disease confusion, four special signal hint of blue ear pig disease.
The first signal hair follicle bleeding. Common two kind of situations: a bleeder is dotted with the whole body, big tip, won’t expand, if improved, bleeder will gradually disappear. Another is a pig skin, especially the neck and back with skin color or rust onto blue purple.
The second signal "three blue" phenomenon. The pigs of large area, appear orbital swelling, cyanosis is violet, kiss is a defect blue-purple, ear is violet blue cyanosis three phenomenon.
The third weak signal tire and stillbirth. The sow the weak young gave birth in 24 hours after death and the undead 3 ~ 4 days after MaoJiao, angular, nose appeared lip dry, difficulty breathing, temperature, shaking, limbs of swimming do posture, hoof is violet, standing side cyanosis, diarrhea, unable to absorb can milk, and a high mortality rate.
The fourth signal boar scrotal bleeding. Boar scrotal skin just started to hemorrhage is the dense pale spot to violet and further development violet necrosis, dry solid focal bleeding, scleroma, similar spherical scabby blue purple.