| abstract |
The invention provides a composite feed additive. The composite feed additive is prepared from the following components in percentage by mass: 10-30% of streptococcus faecalis, 15-25% of bacillus subtilis, 10-25% of lactobacillus plantarum, 15-30% lactobacillus casei, 10-15% of sweet potato starch and the balance of shell powder. The composite feed additive is prepared through the steps of preparing strains by use of streptococcus faecalis, bacillus subtilis, lactobacillus plantarum and lactobacillus casei and then mixing the strains with sweet potato starch and shell powder. |