The invention provides cod strains selected from a group, including (a) ECA preserved as dsm32324, (b) ECA preserved as dsm32325, (c) ECA as (a) or (b) variant,It is sensitive to amphetamine, vancomycin, zhentanmycin, jinnaimycin, streptomycin, erythromycin, clindamycin, tetracycline and ketamine, and has inhibitory effect on E.coli and clonium perfrringens. The invention refers to the composition of COD, including at least one subtropical cod strain, preferably dsm32324 cod strain and / or dsm32325 cod strain, as the microorganism for direct food management, premezcla,Animal feed additive or animal feed additive. The invention provides a method for improving the performance parameters of one or more selected animals, including (I) adding weight (AP),（2） Feed conversion low index (ICP),（3） Necrotizing enteritis has the lowest injury score, the lowest incidence of necrotizing enteritis, the lowest mortality of necrotizing enteritis, and the highest production efficiency factor (feep) in Europe,（7） Mortality is reduced and a strain or compound is provided to the animal according to the invention.La presente invencion proporciona una cepa de Bacillus subtilis seleccionada del grupo que consiste en a) la cepa depositada como DSM32324, b) la cepa depositada como DSM32325, y c) una cepa mutante de (a) o (b), la cual tiene sensibilidad a la ampicilina, vancomicina, gentamicina, kanamicina, estreptomicina, eritromicina, clindamicina, tetraciclina y al cloranfenicol； y tiene actividad inhibidora contra E. coli y Clostridium perfringens. La invencion se refiere ademas a composiciones de Bacillus que comprenden por lo menos una cepa de Bacillus subtilis de la invencion, preferentemente la cepa de Bacillus subtilis DSM32324 y/o la cepa de Bacillus subtilis DSM32325, como producto microbiano para administracion directa en el alimento, premezcla, aditivo de piensos para animales o pienso para animales. La invencion proporciona un metodo para mejorar uno o mas parametros de rendim
