The existing commercial vaccines could effectively control diarrhea caused by E. coli in newborn piglets from immuning sow, while it was unlikely effective to PWD.
现有商业疫苗通过母猪免疫能有效控制新生仔猪大肠杆菌性腹泻，而对PWD却难以奏效。
2
The reassortant also has a higher yield via microcarrier culture. We could get the better anti-serum by immuning female goat, and selected suitable purification method of the anti-serum.