A meat has a lowered amount of saturated fatty acid. By feeding a livestock animal with feed containing Lactobacillus plantarum BB-PLT (lactic acid bacterium BB-PLT strain) (NITE BP-02097), the saturated fatty acid contained in the meat from the livestock animal decreases and the monovalent unsaturated fatty acid contained in the meat from the livestock animal increases as a result of heating during cooking. The lactic acid bacterium strain Lactobacillus plantarum BB-PLT (NITE BP-02097) can be included in a livestock feed, and can be used in a method for raising a livestock animal for meat by feeding it to the livestock animal with the lactic acid bacterium. Edible meat can be obtained from a livestock animal raised by the method.