Feed additive for promoting ovarian development and egg yolk generation of river crabs as well as preparation method and application thereof

Abstract

The invention discloses a feed additive for promoting ovarian development and egg yolk generation of river crabs as well as a preparation method and application thereof. The feed additive for promoting ovarian development and egg yolk generation of river crabs mainly comprises the following raw materials, by weight: 2-10% of icariin, 40-50% of rice bran and 40-50% of corn protein powder. The feedadditive disclosed by the invention fills the blank of regulating and controlling egg yolk development and egg yolk generation of river crabs through an exogenous feed additive at present. According to the invention, a uniform feed additive prepared by taking icariin as a main effective substance and rice bran and corn gluten powder as auxiliary materials can promote the growth of river crabs andpromote the secretion of sex hormones, the egg yolk generation and the ovarian development level of the river crabs; the quality is safe and controllable, the supply is reliable, the use is convenientand the effect is obvious.

Description

technical field [0001] The invention belongs to the technical field of aquatic animal additives, and is a feed additive for crabs, in particular to a feed additive for promoting ovarian development and yolk generation of river crabs, a preparation method and application thereof. Background technique [0002] River crab is an important economically farmed crab in my country, and its output is increasing year by year. According to statistics from the Food and Agriculture Organization of the United Nations, the aquaculture output of river crabs in China reached 812,103 tons in 2016. In the process of artificial breeding of crustaceans, the comparison between feeding natural food and artificial feed has been perplexing the aquaculture industry of crustaceans. Iced fresh fish used to be the main source of bait in crab farming. However, with the development of the river crab farming industry, the number of traditional natural bait resources such as ice fresh fish and snails has d...

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Problems solved by technology

[0004] At present, the research and application of icariin are limited to human clinical medicine and pharmacological experiments, such as the prevention and treatment of kidney disease, the prevention and treatment of male reproductive dysfunction, and it is used as a feed additive of Chinese herbal plant extracts in There is still a gap in the healthy breeding of crustaceans

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