The invention discloses an organic aquatic
feed additive and a preparation method thereof, and relates to the technical field of feed additives. The organic aquatic
feed additive comprises the following raw materials in percentage by weight: 2-2.5 percent of aloes, 3-3.5 percent of
green tea leaves, 3-3.5 percent of pine leaves, 1-1.5 percent of brown
sugar, 0.1-0.15 percent of dry
yeast and the balance being water. The preparation method comprises the steps of immersing the aloes, the
green tea leaves and the pine leaves in boiled water for 2-3 hours, filtering out residues and impurities of the aloes, the
green tea leaves and the pine leaves, standing filtrate and then adding the dry
yeast and the brown
sugar into the filtrate for
fermentation for 30 days or longer till the product becomes sour, thus obtaining the organic aquatic
feed additive. According to the preparation method, immersion solutions of the three plants are fermented to obtain the
fermentation liquor serving as the organic aquatic feed additive, so that the feed source is expanded, and the production cost is lowered; the
disease resistance of aquatic animals is enhanced, the
survival rate of aquatic animals is increased,
water quality can be improved, and the growth of aquatic animals is promoted.