The invention belongs to the field of
grass carp feeds and discloses an expanded feed for promoting weight reduction of
grass carp as well as a preparation method thereof. The expanded feed consists of the following components in percentage by
mass: 4 to 10 percent of flour, 4 to 10 percent of corns, 5 to 15 percent of cassava, 8 to 15 percent of rice
bran, 5 to 12 percent of soybeans, 10 to 15 percent of bean pulp, 20 to 25 percent of
rapeseed meal, 6 to 12 percent of
cottonseed meal, 3 to 6 percent of Baijiu
vinasse, 2 to 5 percent of
fish meal, 2 to 5 percent of meat
meal, 1.5 to 2.5 percent of
soybean oil, 1 to 2 percent of a
zeolite powder, 2 to 3 percent of
monocalcium phosphate and 2 percent of premix. Through multi-validation, the
grass carp achieves a good weight-reducing effect,the growth is not influenced, the internal organs such as liver are healthy, and transportation resistance is achieved. Through reasonable matching of the soybean, the bean pulp, the
rapeseed pulp, the
fish meal, the meat meal and the like, the
protein content and the
fat content of the feed are moderate, and the fatness of the grass
carp eating the feed is 1.9 to 2.3 percent.