additional direct salary microorganisms (DFM), including in combination with xylanase and - glucanase (in any comprising fibers decomposition enzyme) to provide a feed additive composition. In here, DFM enzyme production strain is selected from or a combination thereof C5 sugars fermentation strain short-chain fatty acid production line fiber degradable within microorganisms flora promote strain. DFM Bacillus subtilis (Bacillus subtilis) AGTP BS3BP5, Bacillus subtilis (Bacillus subtilis) AGTP BS442, Bacillus subtilis (Bacillus subtilis) AGTP BS521, Bacillus subtilis (B.subtilis) AGTP BS918, Bacillus subtilis (Bacillus subtilis) AGTP BS1013, Bacillus subtilis (B.subtilis) AGTP BS1069, Bacillus subtilis (B.subtilis) AGTP 944, Bacillus pumilus (B.pumilus) AGTP BS 1068 or Bacillus pumilus (B.pumilus) KX11-1, Enterococcus faecium (Enterococcus faecium) ID7, Propionibacterium foot Diplomat Pio Western (Propionibacterium acidipropionici) P169, Lactobacillus rhamnosus (Lactobacillus rhamnosus) CNCM-l-3698, Lactobacillus Farsi Minis (Lactobacillus farciminis) CNCM-l- 3699, strains having all of these features are selected from the group consisting of any derivative or variant thereof, additional fiber degrading enzymes, Cerro O cellobiohydrolase (E.C.3.2.1.176 and E.C.3.2.1.91), - glucosidase (E.C.3.2.1.21), - xylosidase (E.C.3.2.1.37), feruloyl esterase (E.C.3.1.1.73), - arabinofuranosidase (E.C.3.2.1.55), pectinase (for example, end polygalacturonase (E.C.3 .2.1.15), end polygalacturonase (E.C.3.2.1.67) or pectin lyase (E.C.4.2.2.2)), or a combination thereof It is selected from the group consisting.BACKGROUND直接給与微生物(DFM)をキシラナーゼおよびβ-グルカナーゼと組み合わせて含む(任意で追加的な繊維分解酵素を含む)、飼料添加用組成物を提供する。ここにおいて、DFMは酵素生産株;C5糖類発酵株;短鎖脂肪酸生産株;繊維分解性内性微生物菌叢促進株;またはこれらの組み合わせから選択される。DFMはバチルス・スブチリス(Bacillus subtilis)AGTP BS3BP5、バチルス・スブチリス(Bacillus subtilis)AGTP BS442、バチルス・スブチリス(Bacillus subtilis)AGTP BS521、バチルス・スブチリス(B.subtilis)AGTP BS918、バチルス・スブチリス(Bacillus subtilis)AGTP BS1013、バチルス・スブチリス(B.subtili