Identification of blue ear disease in pigs

Identification method of sow

1. There will be a high abortion rate in all stages of pregnancy, and the abortion will be repeated.

2. Stillbirth: mummies and stillbirths may not appear.

3. Heavy fetal sows: sows with high fever after 90 days of pregnancy may have higher mortality (active abortion can partially reduce mortality).

4. Mortality: when the disease occurs, the mortality rate of sows is higher, which can be more than 5%, up to 90%.

Identification method of diseased pigs

The main results are as follows: 1. Heavy fetus sows or conservation pigs appeared first, and the disease occurred almost at the same time in the whole herd.

2. The body temperature is as high as 40,42.5 ℃.

4. Concomitant symptoms: lying in bed, constipation, little urine, not eating.

5. Encephalitis and pulmonary edema are the main causes of death.

6. The secondary infection was serious, mainly streptococcus and Haemophilus parasuis.