Analysis of the Antibodies of Type O and Type A FMD in Large⁃scale Dairy Farms in Qingyuan Fity From 2020 to 2021
HE Shuzhi1 ，ZHENG Jingcheng2 ，TAN Weijun1*
Guangdong Journal of Animal and Veterinary Science . 2023, (4): 76 -78 .  DOI: 10.19978/j.cnki.xmsy.2023.04.14

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