Selenium-rich compound hard pellet feed for polyculture fishes and preparation method thereof

Abstract

The invention discloses a selenium-rich compound hard pellet feed for polyculture fishes. The raw materials of the feed comprises a selenium-rich fermented raw material, red fish meal, spray-dried animal blood cells, cottonseed protein powder, flour, wheat, rapeseed meal, rice bran, a mineral premixture, monocalcium phosphate, fish oil, calcium propionate and oligosaccharide which are prepared into a feed base material by weight parts, and the feed base material is conditioned and cured by using a double-shaft differential conditioner under the conditions of certain steam pressure, humidity and temperature. The feed has the advantages of high utilization ratio, high resistance to trophic factor damages, high stability in water and small feed coefficient. When the feed is used for breeding polyculture fishes, water pollution can be reduced, the survival rate of the polyculture fishes can be improved, and the breeding cost can be reduced; and moreover, bred fishes have the advantages of good body shapes, delicious meat and abundant organic selenium content, and free radicals in the human bodies can be cleared away by eating the bred fishes, so that the selenium-rich compound hard pellet feed has a health-care effect on the health of the human bodies.

Description

technical field [0001] The invention relates to a feed for mixed fish, in particular to a fermented feed raw material of a selenium-enriched microbial fermentation treatment process added to a mixed fish matured hard pellet feed and a preparation method thereof. Background technique [0002] With the application of polyculture fish farming and supporting technologies, the aquaculture industry of polyculture fish has developed rapidly, such as crucian carp, grass carp, herring, bream, silver carp, silver carp, etc. With the improvement of people's living standards, the consumption of aquatic products is gradually increasing. As people pay more and more attention to health, the demand for special aquatic products is increasing. At present, rapeseed meal, wheat and low-quality Feeding with ordinary hard pellets, the cost per unit of fish farming is high, the utilization rate is low, there are many residual baits, and the feed coefficient is greater than 1.8-2. For the hard pel...

AI Technical Summary

Problems solved by technology

Low feed utilization rate and high feed coefficient will lead to more residual bait deposition, resulting in eutrophication of aquaculture water, high nitrogen and phosphorus discharge, heavy water pollution, frequent fish diseases, decreased survival rate, and reduced production , the cost of farming per unit of fish is also higher

At present, there is no hard pellet feed produced by adding selenium-enriched fermented feed materials in mixed fish feed. This requires creative research and experiments on raw material components, the content of each raw material component, and suitable production processes. Obtain the matured hard pellet feed of selenium-enriched polyculture fish suitable for polyculture fish feeding, with reasonable nutrition and small feed coefficient