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Gracilaria lemaneiformis-containing forage for lutianus stellatus Akazaki and preparation method thereof

A technology of spot snapper and feed, which is applied in the field of spot snapper feed and its preparation, can solve the problems that the research on asparagus feed is still scarce, and achieve the effects of good food attraction, comprehensive nutrition, and reduced usage

Inactive Publication Date: 2014-07-30
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The inventors discovered by adding certain ingredients like polyglycerol (PG) or alginic acid into their diet for better health benefits when eaten raw instead of seafood products such as shrimp shells. These beneficial results were achieved through enhancing gut barrier function and promoting cellular activity during pregnancy while reducing intestinal inflammation caused by stressful conditions associated therewith.

Problems solved by technology

The technical problem addressed in this patented study relates to improving the efficiency and sustainability of producing snake bittern from seawater or brackish shrimps due to limited resources available during cultivation. Current methods have limitations such as poor intake levels leading to slower growing turtles that lack sufficient nourishment sources like vegetable oil, mushrooms, crayfishes, etc., reduced storage stability over time, lower productivity rates, increased risk of disease outbreaks caused by harmful chemical substances present within cropped plants, and decreased survivorship potential under heavy rain conditions.

Method used

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  • Gracilaria lemaneiformis-containing forage for lutianus stellatus Akazaki and preparation method thereof
  • Gracilaria lemaneiformis-containing forage for lutianus stellatus Akazaki and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In order to detect the most suitable addition amount of Asparagus, we use 0 (control), 5%, 10%, 15%, and 20% dry powder of Asparagus to replace fish meal or other vegetable protein sources to make star snapper. The feed and feed formula are shown in Table 1 (the values ​​are percentages by weight), and the preparation steps are as follows:

[0026] ① Collect fresh asparagus, clean it, remove impurities, and dehydrate it with a centrifugal dehydrator. The speed of the centrifugal dehydrator is 3000-5000 rpm, and the centrifuge is dehydrated for 3-10 minutes.

[0027] ②Preparation of asparagus powder: Put the dehydrated asparagus in a drying box for drying, the drying temperature is set to 70~85℃, the drying time is set to 4 to 5 hours, and the moisture content of the dried asparagus is controlled. Between 10% and 15%, then use a pulverizer to pulverize to 80-120 meshes for use.

[0028] ③Mixing: According to the feed formula shown in Table 1, the lump protein source materials ...

Embodiment 2

[0033] In order to obtain the best feed formula for Asparagus stellate snapper, the ratio of raw materials and auxiliary materials was adjusted on the basis of 15% Asparagus serrata content to make different stellate snapper compound feeds and feed formulas. As shown in Table 2 (values ​​are percentages by weight), the preparation steps are the same as in Example 1.

[0034] Table 1

[0035]

[0036] Note: a. Tapioca starch is a commercially available product, which can be purchased from the domestic raw material market;

[0037] b. Fish meal is American fish meal, crude protein content is 68%, and fish oil content is 9.4%;

[0038] c. Asparagus powder protein content is 19.14%, fat content is 0.5%, crude fiber content is 5.8%, ash content is 28.77%, amino acid content (g / 100g, dry weight): Threonine (Thr) * 0.70, Valine Acid (Vla)* 1.11, Methionine (Met)* 0.53, Isoleucine (Ile)* 0.94, Leucine (Leu)* 1.32, Phenylalanine (Phe)* 0.83, Lysine (Lys)* 0.89, Histidine (His)* 0.21, Trypto...

Embodiment 3

[0043] With the formulated feed prepared in Example 1, about 11-12 g of snapper scorpion were reared. This embodiment is a cage culture of fish rafts at sea. The culture cage is 1×1×1.5m and has a covered net to prevent escape and seabirds. There are 3 parallel trials in each group, and 30 fish in each parallel trial. The temperature during the cultivation period was 20-26°C and the salinity was 27-31°C. After 60 days of cultivation, the growth indicators were measured. The results of Example 1 are shown in Table 3.

[0044] table 3

[0045] Group Ⅰ(0) Ⅱ (5%) Ⅲ (10%) Ⅳ (15%) Ⅴ (20%) Initial average weight (g) 11.83±0.10 12.17±0.54 11.78±0.56 11.06±0.34 11.78±0.64 Average final weight (g)24.24±0.47 cd 25.01±0.60 bc 25.03±0.27 bc 26.61±0.41 a 25.75±0.38 ab Weight gain rate (%)1.11±0.09 b 1.06±0.04 b 1.13±0.08 b 1.41±0.09 a 1.05±0.05 b SGR1.19±0.04 b 1.20±0.03 b 1.26±0.06 b 1.47±0.03 a 1.31±0.07 b Survival rate (%)83.33±0.02 ...

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Abstract

The invention relates to a forage for lutianus stellatus Akazaki and a preparation method thereof. The forage comprises a protein-source raw material, a fat-source raw material, a sugar-source raw material and auxiliary materials, and is characterized by also comprising 15% by weight of gracilaria lemaneiformis powder. The protein-resource raw material is fish meal; the fat-source raw material is selected from fish oil, soybean oil and mixture thereof; the sugar-source raw material is cassava starch; and the auxiliary materials is selected from composite vitamins, mixed mineral substances, microcrystalline cellulose, soybean phospholipid powder, DL-methionine, calcium dihydrogen phosphate, choline, ascorbic acid, squid paste and mixture thereof. The forage is composed of, in percent by weight, 41.71-42.24% of crude protein, 8.67-8.81% of crude fat, and the balance carbohydrates, crude fiber, ash and water. The forage for lutianus stellatus Akazaki helps lutianus stellatus Akazaki to have relatively high weight gain rate and survival rate, the usage amount of fish meal can be reduced, and the protein demand level of fingerlings is reduced.

Description

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Claims

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Application Information

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Owner SHANTOU UNIV
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