54.下列何種細菌種類中,何者是造成乾乳牛乳房炎(dry cow mastitis)以及夏季乳房炎
(summer mastitis)的主要病原?
(A)異乳鏈球菌(Streptococcus dysgalactiae)
(B)無乳鏈球菌(Streptococcus agalactiae)
(C)化膿隱密桿菌(Arcanobacterium pyogenes)
(D)牛黴漿菌(Mycoplasma bovis)
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統計: A(91), B(330), C(483), D(203), E(0) #853577
統計: A(91), B(330), C(483), D(203), E(0) #853577