Truscott R B, Ferguson A E, Ruhnke H L, Pettit J R, Robertson A, Speckmann G
Can J Comp Med. 1974 Jul;38(3):341-3.
A slow-spreading infection due to a strain of Mycoplasma gallisepticum was detected serologically in a flock which remained free of clinical symptoms. The strain was shown to be tylosin resistant. Serological studies indicated that vertical transmission occurred.
在一个没有临床症状的鸡群中,通过血清学检测发现了由一株鸡败血支原体引起的缓慢传播的感染。该菌株显示对泰乐菌素耐药。血清学研究表明发生了垂直传播。