Zimmerman J J, Dreesen D W, Owen W J, Beran G W
Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames 50011.
J Am Vet Med Assoc. 1990 Jan 15;196(2):266-70.
Of swine from 104 herds, 2,616 were tested for antibodies against Toxoplasma gondii, using an ELISA. Data were analyzed according to swine type, herd size, facility type, and season. The true prevalence of toxoplasmosis was estimated as 5.4% among finishing swine and 11.4% among sows and gilts. Herds with less than 100 breeding swine were significantly (P less than 0.05) more likely to be infected than were herds with greater than or equal to 100 breeding swine. The rate of seropositivity in breeding swine was approximately the same in infected herds, regardless of herd size. Herds with finishing swine maintained in total confinement were as likely to become infected as were herds maintained in other types of facilities, but infected herds with finishing swine maintained in confinement appeared to have a lower in-herd prevalence than did herds maintained in other types of facilities (P = 0.09). Seasonal effects were not observed, and prevalence remained relatively constant throughout the year.
对来自104个猪群的2616头猪，使用酶联免疫吸附测定法（ELISA）检测其抗弓形虫抗体。根据猪的类型、猪群规模、养殖设施类型和季节对数据进行分析。经估计，育肥猪弓形虫病的实际患病率为5.4%，母猪和后备母猪为11.4%。繁殖猪少于100头的猪群比繁殖猪大于或等于100头的猪群感染可能性显著更高（P小于0.05）。在受感染猪群中，无论猪群规模如何，繁殖猪的血清阳性率大致相同。全封闭饲养育肥猪的猪群与其他类型养殖设施的猪群感染可能性相同，但全封闭饲养育肥猪的受感染猪群的群体患病率似乎低于其他类型养殖设施的猪群（P = 0.09）。未观察到季节效应，全年患病率保持相对稳定。
