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A special nutrition enhancer for broodstock of cold-water fish and its application method

A nutritional fortifier, a technology for cold water fish, applied in the application, fish farming, climate change adaptation and other directions, can solve the problems of poor nutritional status, lack and low reproductive capacity of cold water fish broodstock, and achieve the goal of improving nutritional status and reproductive capacity. Effect

Active Publication Date: 2022-03-11
山东省海洋资源与环境研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the current lack of nutritional enhancers specifically for cold-water fish broodstock, resulting in poor nutritional status and low reproductive capacity of cold-water fish broodstock. The special nutrient enhancer for fish broodstock and its use method can improve the nutritional status of cold-water fish broodstock, thereby improving the quality of its reproductive cells and improving the survival rate of larvae

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this example, the nutritional enhancer for male broodstock in stage I uses the following raw materials in parts by weight: 18 parts of Schizochytrium sp., 15 parts of Nannochloropsis, 15 parts of Haematococcus pluvialis, 10 parts of phospholipids, and envelope essence. 15 parts of amino acid, 8 parts of enveloped isoleucine, 4 parts of enveloped leucine, 3 parts of enveloped valine, 0.25 parts of vitamin A, 0.5 parts of vitamin C, 1 part of zinc sulfate, 1 part of yeast selenium, N - 2 parts carbamoylglutamate (NCG), 2 parts bile acid, 5.25 parts bran.

[0043] The nutritional enhancer for male broodstock in stage II uses the following raw materials in parts by weight: 12 parts of Schizochytrium sp., 10 parts of Nannochloropsis, 20 parts of Haematococcus pluvialis, 10 parts of phospholipids, 20 parts of enveloped arginine, 6 parts of enveloped isoleucine, 3 parts of enveloped leucine, 3 parts of enveloped valine, 0.25 parts of vitamin A, 0.5 parts of vitamin C, 0.25 ...

Embodiment 2

[0059] In this example, the raw material of Stage I male parent fish-specific nutrient enhancer contains the following components in parts by weight: 18.5 parts of Schizochytrium sp., 15.5 parts of Nannochloropsis, and 15.5 parts of Haematococcus pluvialis. 9 parts of phospholipids, 14 parts of enveloped arginine, 7 parts of enveloped isoleucine, 3.5 parts of enveloped leucine, 3.5 parts of enveloped valine, 0.3 parts of vitamin A, 0.5 parts of vitamin C, zinc sulfate 1.5 parts, 1.5 parts of yeast selenium, 2 parts of N-carbamylglutamic acid (NCG), 2.5 parts of bile acid, 5.2 parts of bran;

[0060] Stage II male broodstock nutritional enhancer, the raw material contains the following components, according to the weight of each component: 12.4 parts of Schizochytrium sp., 10.2 parts of Nannochloropsis, 21 parts of Haematococcus pluvialis, and 11 parts of phospholipids 20 parts of enveloped arginine, 5 parts of enveloped isoleucine, 2.5 parts of enveloped leucine, 2.5 parts of ...

specific example

[0077] 1. In October 2016, a sturgeon nursery in Linyi, Shandong Province began to strengthen the nutrition of broodstock (10 female broodstock and 2 male broodstock) by adopting the special nutrition-enhanced compound feed for broodstock.

[0078] In March 2017, induced labor, fertilization and breeding began. The reproductive production lasted for 42 days, and a total of 5 batches were induced.

[0079] A total of 5.5 million fertilized eggs were harvested in this breeding production, and 4.5 million sturgeon fry were bred. The average egg production of broodstock is 550,000 eggs / tail, the relative fecundity is 11,000 eggs / kg, the egg weight is 40,000 eggs / kg, and the hatching rate is 81.82%.

[0080] Compared with broodstock breeding and production that did not eat cold-water fish broodstock-specific nutrient fortifiers for intensive feeding, the egg weight increased by about 15%, the amount of eggs laid increased by about 23%, and the average hatching rate increased by 30%...

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Abstract

The invention relates to a special nutrition enhancer for broodstock of cold-water fish and a using method thereof, belonging to the technical field of aquaculture. According to the sex of the broodstock, the enhancers are divided into nutritional enhancers for male broodstock and nutritional enhancers for female broodstock. The special nutritional enhancer includes the special nutritional enhancer for stage I female broodstock, the special nutritional enhancer for female broodstock in stage II and the special nutritional enhancer for female broodstock in stage III. According to the growth characteristics of broodstock in different periods, different raw material formulas are selected, and nutritional fortification is carried out at different times to improve the nutritional status of broodstock in cold water. The invention has the advantages of scientific formula, reasonable process, convenient use, strong pertinence, supplements special nutritional elements in the breeding and production process of cold-water fish broodstock, and adds functional substances at the same time to improve the fecundity of broodstock.

Description

technical field [0001] The invention relates to a nutritional enhancer specially used for broodstock of cold-water fish, a preparation method thereof and a method for using the nutritional enhancer specially used for broodstock, specifically, a special nutrition for broodstock of cold-water fish produced by optimizing functional feed materials and matching biologically active substances The enhancer and its application method belong to the technical field of aquaculture. Background technique [0002] Cold-water fish refers to fish that live in water with a water temperature lower than 20°C. Common cold-water fish include sturgeon, rainbow trout, Schizothorax, turbot, scorpionfish, Atlantic salmon (salmon), etc. Due to the low temperature of the living environment, these fish have higher requirements for liquid fatty acids against low temperature and anti-oxidative vitamins. Broodstock is a special stage in the reproduction process of fish. Its own requirements for nutrients...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A23K10/16A23K10/37A23K20/111A23K20/142A23K20/158
CPCA23K50/80A23K10/16A23K20/158A23K20/142A23K20/174A23K20/30A23K10/37A23K20/111Y02A40/818Y02P60/87Y02A40/81
Inventor 李宝山郝甜甜卜洪医孙永智宋志东黄炳山王际英
Owner 山东省海洋资源与环境研究院
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