IMMUNE-ENHANCED EXTRUDED PELLET FEED FOR GRASS CARP AND PREPARATION METHOD THEREOF

Abstract The present invention belongs to the technical field of fish feed, and discloses an immune-enhanced extruded pellet feed for grass carp, Ctenopharyngodon idella and a preparation method thereof. The immune-enhanced extruded pellet feed is composed of corn meal, fish meal, soybean cake meal, wheat bran, sweet potato meal, salt, auxin, calcium hydrophosphate, bentonite, lysine hydrochloride, an antioxidant, soybean oil, high-gluten wheat flour, monocalcium phosphate, choline chloride, a mildew preventive, natural xanthophyll, premix, Copperleaf herb, wormwood, plantain herb, verbena, Chinese gall, Fructus meliae azedarach and a feed additive. Due to porosity, a volume of the feed in the present invention is increased, so that the feed can float on water. Due to high processing temperature, the feed can be well disinfected and sterilized. The feed is partially gelatinized, maintains nutrition to the utmost extent, and is easily digested and absorbed by fishes, so that a feed conversion ratio can be greatly increased. Moreover, water content in the dried feed can be decreased by 6-8 times, and preservation time of the feed can be effectively prolonged. Drawings of Description Preparation of basal feed: step 1: step 1: weighing corn meal, fish meal, soybean cake meal, wheat bran, sweet potato 01 meal and salt; mixing and grinding the materials; adding the materials into a mixer after grinding; and mixing the materials to obtain coarsely ground raw materials; step 2: re-grinding the coarsely ground raw materials obtained in the step 1; and adding auxin, calcium hydrophosphate, bentonite, lysine hydrochloride and an antioxidant for performing secondary mixing to obtain secondary mixed raw materials; step 3: uniformly spraying soybean oil onto the surfaces of the secondary mixed raw materials by an oil spray machine to obtain the basal feed for later use Preparation of premix feed: weighing high-gluten flour, monocalcium phosphate, choline chloride, a mildew preventive, an antioxidant, natural xanthophylls and premix; and grinding and mixing the various components to obtain primary mixed feed; and re-grinding and tempering the primary mixed feed to obtain the premix feed for later use; grinding and screening the various components such as the high-gluten wheat flour, monocalcium phosphate, choline chloride, the mildew preventive, the antioxidant, natural xanthophylls and premix by a sieve of 1.5 mm and then mixing; and then re-grinding the primary mixed f