本欧洲标准定义了含有双歧杆菌作为单一细菌成分或与其他微生物混合的饲料样品（添加剂，预混物和饲料）中益生菌双歧杆菌计数的一般规则。该标准不适用于矿物饲料，矿物饲料定义为主要由矿物质组成的含有至少40％粗灰的补充饲料（理事会指令79/373/EEC）[3]。 饲料样品有不​​同类别: a）含有约1010个菌落形成单位（CFU）/ g的添加剂 b）预混合物含有约108CFU/g c）含有约106 CFU/g的饲料，膳食或丸剂，包括完整的饲料和牛奶替代品。 检测限定在ISO 7218中

This European Standard defines general rules for the enumeration of probiotic bifidobacteria in feed samples (additives, premixtures and feeding stuffs) that contain bifidobacteria as a single bacterial component or in a mixture with other microorganisms. This standard is not applicable for mineral feeds which are defined as complementary feeding stuffs composed mainly of minerals and containing at least 40% crude ash (Council Directive 79/373/EEC) [3]. There are different categories of feed samples: a) Additives containing about 1010 colony forming units (CFU)/g b) Premixtures containing about 108 CFU/g c) Feeds, meal or pellets, which contain about 106 CFU/g and include complete feeding stuffs, and milk replacers. The detection limit is as defined in ISO 7218.