Feed additive capable of promoting development of ovaries and vitellogenesis of blue crabs and application of feed additive

A technology of portunus trituratus and feed additive, applied in application, animal feed, climate change adaptation and other directions, can solve problems such as frequent diseases and environmental pollution in aquaculture waters, and achieve the goal of improving survival rate, improving nutritional structure and regulating body metabolism. Effect

Inactive Publication Date: 2016-05-04
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the breeding process of portunus trituberculatus, low-value small miscellaneous fish and shellfish are often used for direct feeding. Not only is the contradiction between supply and demand of fresh bait increasingly prominent, but it is also very easy

Method used

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  • Feed additive capable of promoting development of ovaries and vitellogenesis of blue crabs and application of feed additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A feed additive for promoting ovarian development and yolk production of Portunus trituberculatus, weighed according to the following parts by weight: DHA ethyl ester oil 18, EPA ethyl ester oil 8, vitamin E acetate 13, cholesterol 8, soybean lecithin 8, glycerin Phosphatidylcholine 3, astaxanthin 2, soybean isoflavone 2, lignans 2, seaweed powder 23, clam clam powder 13. The above raw materials are evenly mixed to prepare a feed additive for promoting ovarian development and vitellogenation.

Embodiment 2

[0026] A feed additive for promoting ovarian development and yolk production of Portunus trituberculatus, which is basically the same as Example 1, except that the raw material formula is: DHA ethyl ester oil 15, EPA ethyl ester oil 5, vitamin E acetate 15, cholesterol 10 , soybean lecithin 10, glycerol phosphatidylcholine 2, astaxanthin 1, soybean isoflavone 1, lignan 1, seaweed powder 25, razor clam powder 10. The above raw materials are evenly mixed to prepare a feed additive for promoting ovarian development and vitellogenation.

Embodiment 3

[0028] A feed additive for promoting ovarian development and yolk production of Portunus trituberculatus, which is basically the same as Example 1, except that in the raw material formula: DHA ethyl ester oil 20, EPA ethyl ester oil 10, vitamin E acetate 10, cholesterol 5 , soybean lecithin 5, glycerol phosphatidylcholine 5, astaxanthin 3, soybean isoflavones 3, lignans 3, seaweed powder 20, razor clam powder 15. The above raw materials are evenly mixed to prepare a feed additive for promoting ovarian development and vitellogenation.

[0029] 2. Experimental example

[0030] Breeding species: 600 Portunus trituberculatus with an average weight of 150 grams, randomly assigned to 4 groups, with 3 replicates in each group, and 50 Portunus trituberculatus in each cement pond (size: 7.5m×4m×1m, length×width×depth) Only, the initial body weight of each experimental group was the same; the breeding conditions such as environmental factors, chemical factors and biological factors wer...

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Abstract

The invention discloses a feed additive capable of promoting the development of ovaries and vitellogenesis of blue crabs and the application of the feed additive. The feed additive is characterized by being prepared through uniformly mixing and compounding the following raw materials in parts by weight: 15-20 parts of DHA ethyl ester oil, 5-10 parts of EPA ethyl ester oil, 10-15 parts of vitamin E acetic ester, 5-10 parts of cholesterol, 5-10 parts of soybean lecithin, 2-5 parts of L-alpha-glycerophosphorylcholine, 1-3 parts of astaxanthin, 1-3 parts of soybean isoflavone, 1-3 parts of lignanoid, 20-25 parts of dried marine algae powder and 10-15 parts of sinonovacula constricta powder. The mass percentage of the additive in released feeds is 0.8-1.0%. The feed additive has the advantages that the survival rate of the blue crabs can be increased by 20-23%, the sexual gland index can be increased by 40-50%, the content of vitellogenin can be increased by 35-45%, the molecule expression quantity of the vitellogenin can be increased by 60-80%, the average weight can be increased by 25-30%, and the breeding yield can be increased by 20-22%.

Description

technical field [0001] The invention relates to a feed additive for portunus trituberculatus, in particular to a feed additive for promoting ovarian development and yolk generation of portunus trituberculatus and an application thereof. Background technique [0002] In the breeding process of portunus trituberculatus, low-value small miscellaneous fish and shellfish are often used for direct feeding. Not only the contradiction between supply and demand of fresh bait is becoming increasingly prominent, but also it is very easy to cause environmental pollution of breeding waters and frequent occurrence of diseases. What is more prominent is that the cultured portunus trituberculatus has poor ovarian development, the color of the crab paste is obviously light (or not red), the muscle and crab paste are poor in plumpness and other quality problems, as well as the number of eggs and the development of offspring are poor. And so on. Vitellogenesis refers to the formation of vario...

Claims

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Application Information

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IPC IPC(8): A23K50/80A23K20/00
CPCY02A40/818
Inventor 丁立云周歧存孙蓬陆游袁野马红娜
Owner NINGBO UNIV
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