Table 3.
Farm | No. of sows | Vaccination a | Illness rate (%/y) | Mortality rate (%) |
---|---|---|---|---|
(Yongjing Tai Chi Breed Co., Ltd.) YJ | 400 | Yes | 80 | 60 |
(Hoggery of Science and Technology Breed Park of Jiugang Hongfeng Company) JY | 2000 | Yes | 80 | 60 |
a Sows were vaccinated with divalent inactivated transmissible gastroenteritis (TGE) and porcine epidemic diarrhea (PED) vaccine before delivery.