Feed additive for promoting growth of bred shrimps and crabs after shelling

Abstract

The invention relates to a feed additive for promoting growth of bred shrimps and crabs after shelling. The feed additive is prepared by screening the following components with an 80-mesh sieve and uniformly mixing the components in percentage by weight: 2 to 5 percent of beta-molting hormone, 3 to 15 percent of antibacterial peptide, 5 to 10 percent of yeast, 10 to 20 percent of bacillus subtilis and the balance of maize starch, wherein the molecular structure of the molting hormone is C27H44O7 and high performance liquid chromatography (HPLC) is more than or equal to 85 percent; the total number of viable bacteria in every gram of yeast is more than or equal to 50 hundred millions; and the total number of viable bacteria in every gram of bacillus subtilis is more than or equal to 200 hundred millions. The feed additive is preferably prepared by screening the following components with the 80-mesh sieve and uniformly mixing the components in percentage by weight: 5 percent of beta-molting hormone, 12 percent of antibacterial peptide, 8 percent of yeast, 15 percent of bacillus subtilis and 60 percent of maize starch, wherein the molecular structure of the molting hormone is C27H44O7 and high performance liquid chromatography (HPLC) is more than or equal to 85 percent; the total number of viable bacteria in every gram of yeast is more than or equal to 50 hundred millions; and the total number of viable bacteria in every gram of bacillus subtilis is more than or equal to 200 hundred millions. The feed additive has a rational formula, the preparation method is simple, and metabolism and in-vivo protein synthesis of the bred shrimps and crabs are promoted through the synergistic effect of the components, so that the autoimmunity and the digestion functions of the shrimps and the crabs can be improved while the shrimps and the crabs are shelled, the growth is promoted, the survival rate is increased and the economic benefit is obviously improved.

Description

technical field [0001] The invention relates to a feed additive for aquatic animals, in particular to a feed additive for promoting growth of cultured shrimp and crabs after shelling. Background technique [0002] The periodic molting or shedding of shrimp and crabs is one of their physiological characteristics, and molting must be initiated and regulated by β-molting. Whether shrimps, crabs and other breeding objects can obtain appropriate hormones from compound feed, and whether the digestion and absorption of various nutrients can be organically combined with the growth of molting, so as to become large-scale shrimps and crabs and obtain high benefits. one of the key technologies. In the high-density environment of artificial breeding, due to the influence of various factors such as water quality, external environment, and incomplete nutritional varieties in the bait, it is difficult to shell shrimps and crabs, which seriously affects the normal growth of shrimps and cra...

AI Technical Summary

Problems solved by technology

In the high-density environment of artificial breeding, due to the influence of various factors such as water quality, external environment, and incomplete nutritional varieties in the bait, it is difficult to shell shrimps and crabs, which seriously affects the normal growth of shrimps and crabs. Individual crabs are smaller than their counterparts living in the natural environment, which even leads to a decrease in the survival rate of breeding. Therefore, it is of great practical significance to develop a preparation that can successfully shell shrimp and crabs.