墨西哥杜兰戈州鸡群中弓形虫感染的血清流行率。
Seroprevalence of Toxoplasma gondii infection in chickens in Durango State, Mexico.
作者信息
Alvarado-Esquivel C, González-Salazar A M, Alvarado-Esquivel D, Ontiveros-Vázquez F, Vitela-Corrales J, Villena I, Dubey J P
机构信息
Faculty of Medicine and Nutrition, Juárez University of Durango State, Avenida Universidad S/N, 34000 Durango, Mexico.
出版信息
J Parasitol. 2012 Apr;98(2):431-2. doi: 10.1645/GE-2979.1. Epub 2011 Oct 20.
Little is known concerning the seroprevalence of Toxoplasma gondii infection in chickens (Gallus domesticus) in Mexico. Antibodies to T. gondii were determined in 519 chickens in Durango, Mexico using the modified agglutination test (MAT). Two groups (A, B) of chickens were sampled. Group A chickens (n = 51) were raised in backyards in 7 municipalities in 3 geographical regions in Durango State. Group B chickens were raised in farms in the Mexican States of Sinaloa (n = 289) and Nayarit (n = 179) but slaughtered in 2 abattoirs in Durango City. Overall, antibodies to T. gondii were found in 36 (6.9%) of 519 chickens, with MAT titers of 1∶25 in 22, 1∶50 in 8, 1∶100 in 2, 1∶200 in 3, and 1∶400 in 1. Seroprevalence of T. gondii increased significantly with age and was significantly higher in Group A chickens than in Group B chickens. In Group A chickens, a 25.5% seroprevalence of T. gondii infection was found. Seropositive chickens were found in all 7 municipalities sampled. In Group B chickens, the seroprevalence of T. gondii infection was 4.9%. This is the first report of T. gondii infection in chickens in Durango State, Mexico.
关于墨西哥鸡（家鸡）中弓形虫感染的血清流行率，人们了解甚少。在墨西哥杜兰戈州，使用改良凝集试验（MAT）对519只鸡进行了弓形虫抗体检测。对两组（A组、B组）鸡进行了采样。A组鸡（n = 51）在杜兰戈州3个地理区域的7个市镇的后院饲养。B组鸡在墨西哥锡那罗亚州（n = 289）和纳亚里特州（n = 179）的农场饲养，但在杜兰戈市的2个屠宰场宰杀。总体而言，在519只鸡中有36只（6.9%）检测到弓形虫抗体，MAT滴度为1∶25的有22只，1∶50的有8只，1∶100的有2只，1∶200的有3只，1∶400的有1只。弓形虫的血清流行率随年龄显著增加，且A组鸡的血清流行率显著高于B组鸡。在A组鸡中，发现弓形虫感染的血清流行率为25.5%。在所有采样的7个市镇均发现了血清阳性鸡。在B组鸡中，弓形虫感染的血清流行率为4.9%。这是墨西哥杜兰戈州鸡中弓形虫感染的首次报告。
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