Zaugg J L
J Wildl Dis. 1987 Apr;23(2):205-10. doi: 10.7589/0090-3558-23.2.205.
Anaplasma ovis was experimentally transmitted from sheep to pronghorn antelope (Antilocapra americana) and back to sheep. Anaplasma ovis was recovered in splenectomized sheep, from two of three spleen-intact pronghorns following their inoculation with blood from known A. ovis carrier sheep. These two pronghorns exhibited a 0.5% or higher A. ovis parasitemia within 48 days after exposure, and an anaplasmosis-positive serological response 91 days after exposure. Clinical signs of illness were not observed. Blood from the infected pronghorns produced disease in four splenectomized sheep.
绵羊无形体通过实验从绵羊传播到叉角羚（美洲叉角羚），然后再传回绵羊。在脾切除的绵羊中检测到绵羊无形体，三只脾脏完整的叉角羚中有两只在接种来自已知绵羊无形体携带者绵羊的血液后检测到该病原体。这两只叉角羚在接触后48天内出现了0.5%或更高的绵羊无形体血症，在接触后91天出现了无形体病阳性血清学反应。未观察到疾病的临床症状。来自受感染叉角羚的血液在四只脾切除的绵羊中引发了疾病。
