Grass carp and crucian carp polyculture expanded feed and preparation method thereof

Abstract

The invention discloses a grass carp and crucian carp polyculture expanded feed and a preparation method thereof. The feed comprises the following components in percentage by weight: 5 to 15 percent of fermented soybean meal, 20 to 30 percent of rapeseed meal, 3 to 10 percent of coconut meal, 5 to 10 percent of palm kemel cake, 4 to 9 percent of distillers dried grains with soluble (DDGS), 3 to 9 percent of kelp residues, 15 to 40 percent of wheat middling, 0.5 to 1 percent of calcium hydrophosphate, 1 to 2 percent of premix for omnivorous fish, 1 to 3 percent of fish oil, 0.2 to 0.5 percent of crystal methionine, and 0.5 to 1.0 percent of crystal lysine. The polyculture expanded feed can float on the water surface, so that enough ingestion time is provided for cultured fish, the waste of the feed is reduced, meanwhile, the feed expanded at high temperature has high stability in water and difficultly pollutes culture water.

Description

technical field [0001] The invention relates to a fish feed, in particular to a mixed cultured puffed feed for grass crucian carp and a preparation method thereof. Background technique [0002] Allogenetic gibel crucian carp and grass carp are important freshwater aquaculture species in my country. In order to give full play to the production potential of water bodies, according to the different ecological niches of gibel crucian carp and grass carp, many farmers in Jiangsu and Zhejiang adopt the mixed culture of grass carp and crucian carp, and have achieved good breeding benefits. [0003] The quality of feed is one of the key technologies for the development of freshwater aquaculture. For the polyculture mode of freshwater fish, someone has designed the compound feed of fresh water polyculture fish, discloses a kind of compound feed of fresh water polyculture fish as Chinese invention patent application CN1947556A, is mainly aimed at green, grass, silver carp, bighead fo...

AI Technical Summary

Problems solved by technology

For the polyculture mode of freshwater fish, someone has designed the compound feed of fresh water polyculture fish, discloses a kind of compound feed of fresh water polyculture fish as Chinese invention patent application CN1947556A, is mainly aimed at green, grass, silver carp, bighead four big carps and crucian carp, bream fish, etc., but there is no report on the compound feed specially for the mixed culture of grass crucian carp

[0004] On the other hand, most of the existing feeds are hard pellet feeds made by ordinary pellet mills, which have the problems of poor stability in water, large waste of feed, and serious impact on water quality.