布氏菌属当前划分为6个种,即羊种布氏菌、牛种布氏菌、猪种布氏菌、沙林鼠种布氏菌、绵羊副睾种布氏菌以及犬种布氏菌。这样的分类在流行病学和实验室证明是有意义的。但是,由于种判定标准的主观性,即主要是基于表型的相似性及宿主的特性,因此,涉及到一些分类类别就出现了异议。例如,从狗身上分离的粗糙型布氏菌,既可作为猪种布氏菌的一个型(Biovar), The genus Brucella is currently divided into six species, namely, Brevibacterium brucei, Brevibacterium bovinum, Brucella bovinum, Brucella ssp. Brucei, Epimedium brevis and Brevibacterium brucei bacteria. This classification proves to be significant in epidemiology and laboratory. However, due to the subjectivity of the criteria for judgments, which are mainly based on phenotypic similarities and host characteristics, there have been objections to some taxonomic categories. For example, the rough-type Brucella isolated from dogs can be used as a genotype of B. bovis (Biovar)