The invention discloses a duck feed and a preparation method thereof. The feed is composed of the following raw materials in parts by weight: roxburgh rose residues, corn stalks, wheat straws,
bran,
soybean meal powder,
sunflower meal, distillers' grains, mixed
powder, washed sand,
rape seed cakes,
vegetable oil, a complexing agent, table salt and
bacillus subtilis. The duck feed is prepared by
silage preparation,
fermentation material preparation, mixing, re-
fermentation,
granulation and packaging, and corn stalks and wheat stalks are fermented by utilizing waste roxburgh rose residues produced by a roxburgh rose
processing factory to prepare the feed, the roxburgh rose residues, distillers' grains,
soybean meal powder and
sunflower meal are fermented together, so that the nutritional ingredients of the feed are improved, the
flavor ingredients of the feed are increased, the eating property of ducks is improved, loss of part of nutritional substances in the
fermentation process is effectively supplemented by additionally adding the nutritional substances, and the nutritional ingredients of the feed are guaranteed. The preparation method is simple in process and low in cost, and the prepared feed is rich in
nutrition and can promote ducks to eat.