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Item Soroepidemiologia da leucemia bovina (lb) em bovinos curraleiros dos estados de Goiás e Tocantins, Brasil(José Henrique Stringhini, 2014-07-02) Juliano, Raquel Soares; Fioravanti, Maria Clorinda Soares; Brito, Wilia Marta Elsner Diederichsen de; Abreu, Urbano Gomes Pinto de; Souza, Saura Nayane deAiming to verify bovine leukaemia (BL) occurrence in Curraleiro cattle breed, sera of 1051 animals were sampled from Goias (n=11) and Tocantins (n=12) states. BL serological diagnosis was performed by agar gel immunodiffusion method (AGID). The total occurrence rate was 21.1% (222/1051). In Tocantins it was 27.8% (136/489) occurrence was observed, higher value than in Goias, where 15.3% (86/562) occurrence was found. The serum reactivity was higher in females than in males, 23.3% (198/852) and 11.8% (23/195), respectively, and in animals older than 48 months old.