23.下列何者為造成雛雞心臟或肺臟白色結節病變之主要病原?
(A)Clostridium perfringens
(B)Riemerella anatipestifer
(C)Avibacterium paragallinarum
(D)Salmonella Pullorum
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統計: A(35), B(251), C(606), D(1848), E(0) #1588604
統計: A(35), B(251), C(606), D(1848), E(0) #1588604