A kind of anti-stress grass carp extruded feed and preparation method thereof

Abstract

The invention discloses an anti-stress puffed compound feed for grass carps. The anti-stress puffed compound feed is prepared from the following raw materials in parts by weight: 1-4 parts of fish meal, 10-25 parts of soybean meal, 20-35 parts of rapeseed meal, 5-15 parts of cottonseed meal, 5-13 parts of DDGS, 0-10 parts of rice bran, 15-25 parts of wheat, 0.2 part of choline chloride, 1.2-2 parts of monocalcium phosphate, 0.5 part of a multi-mineral-substance pre-mixture, 1-2 parts of soybean oil, 0.15 part of a multi-vitamin pre-mixture, 0.01-0.03 part of alanyl-glutamine, 0.02 part of bile acid, 0.02-0.1 part of high temperature resisting phytase, 0.1-0.3 part of radix ophiopogonis, 0.1-0.3 part of eclipta and 0.1-0.3 part of astragalus membranaceus. The invention provides the puffed compound feed for the grass carps, and the puffed compound feed has the advantages of satisfying the rapid growth demands of the grass carps, improving the high-temperature stress resistance of the grass carps, reducing economic loss caused by poor transportation resistance of the grass carps and promoting continuous development and healthy cultivation of the grass carps.

Description

technical field [0001] The invention relates to the field of feed, in particular to an anti-stress grass carp extruded feed and a preparation method thereof. Background technique [0002] Grass carp is the freshwater fish species with the highest aquaculture output and the most extensive aquaculture area in my country. In 2012, the aquaculture output was 4.78 million tons, accounting for about 37% of the domestic bulk freshwater fish (eating) aquaculture output. Guangdong, Hubei and Hunan are the main breeding areas for grass carp. As the scale and density of farming increase year by year, and the water quality environment gradually deteriorates, the stress problem of grass carp is becoming more and more serious. Especially in the high temperature season from July to September every year, the water temperature is usually above 30°C, and the stock of pond culture is relatively high. High temperature and crowding stress cause a greater degree of stress to grass carp, and it is...

AI Technical Summary

Problems solved by technology

At the same time, this stage is the peak of grass carp growth and feed feeding, and the amount of feed feeding accounts for more than 60% of the whole year. Farmers usually feed excessively or feed high-grade extruded materials in order to pursue growth speed, resulting in a large metabolic load for grass carp. Poor physique

In recent years, the price of hot water fish has been relatively high. When farmers sell and transport fish at high temperatures, some fish with poor physique or strong stress are prone to red body, debonding, and scale loss, which will affect the selling price in the terminal market and even die during transportation. , causing farmers to suffer setbacks in selling fish, farming benefits and production decline, which has become one of the important factors restricting the development of grass carp farming industry

[0003] At present, the grass carp feed widely used in the market is generally a compound feed of sinking pellets, which excessively pursues the lowest cost, and has disadvantages such as slow growth rate, high feed coefficient, and easy waste leading to water pollution.

Some grass carp breeding areas also use extruded compound feed, but usually only focus on the growth rate of grass carp, and the high temperature and high humidity in the production process of extruded feed can easily lead to the loss of some heat-sensitive substances (such as vitamins, etc.), resulting in the loss of grass carp raised on extruded feed. More prone to strong stress and intolerance to transportation