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Litopenaeus vannamei feed added with rhodotorula paludigenum extract

A technology of marine red yeast and white prawns, applied in animal feed, animal feed, additional food elements, etc., can solve problems such as defects, achieve the effects of reducing dissolution loss, strong anti-oxidation ability, and low environmental impact and pollution

Inactive Publication Date: 2016-10-12
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there have been many reports on the extraction process of marine rhodotorula at present, there are more or less defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Formula 1, 2, 3, 4, and 5 shown in Table 1 were used to formulate feeds with an initial weight of 1.0 g Litopenaeus vannamei for 8 weeks, and then compare formula 2 with formula 1, formula 3 with formula 1, and formula 4 with formula 1 1. Various physiological indexes of Litopenaeus vannamei raised under formula 5 and formula 1. Among them, formula 1 is the basic feed without adding yeast extract, formula 2 is added with 0.81% yeast extract, formula 3 is added with 1.08% yeast extract, formula 4 is added with 0.27% yeast extract, and formula 5 is added with 1.36% yeast extract.

[0027] Table 1 Nutritional composition weight percentage (%) of each embodiment

[0028] raw material Recipe 1 Recipe 2 Recipe 3 Recipe 4 Recipe 5 fish meal 25 25 25 25 25 dehulled soybean meal 25 25 25 25 25 peanut bran 12 12 12 12 12 flour 27.7 26.89 26.62 27.42 26.33 Krill Meal 4 4 4 4 4 fish oil 1 1 1 1 1 S...

Embodiment 2

[0044] The feed formula of this implementation is the same as formula 3 in Example 1. The only difference is that the preparation method of the yeast extract is different from that of Example 1. The preparation method of the yeast extract in this example is: marine rhodotorula dry powder plus 2 times the mass Suspension was made with distilled water, and then ultrasonically broken (500 v, 20 min, broken for 8 s, intermittently for 4 s), the pH was adjusted to 6.0, the temperature was 45 °C, 0.2% papain (w / v) was added, and the enzyme was hydrolyzed 24h. Centrifuge (8000 rpm, 4 °C, 15 min), take the precipitate, freeze dry and centrifuge. That is the obtained yeast extract.

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Abstract

The invention belongs to the technical field of aquatic feeds, and particularly discloses a litopenaeus vannamei feed added with a rhodotorula paludigenum extract. The feed is prepared from, by weight, 38%-45% of crude protein, 6%-10% of crude fat, 15%-30% of total sugar, 7%-15% of ash, 1%-4% of salinity, 1%-3% of total phosphorus, 7%-10% of moisture and 0.1%-2% of rhodotorula paludigenum extract. According to the litopenaeus vannamei feed added with the rhodotorula paludigenum extract, the rhodotorula paludigenum extract adopts a technology of combining enzymolysis and ultrasonication, intermediate reaction conditions are optimized, a cell wall breaking effect is good, operation is simple, convenient and easy to perform, and pollution to environment is less; the feed produced from the formulas is good in palatability, bred litopenaeus vannamei achieves a good growth effect, liver antioxidant enzyme and immune enzyme activities are high, and compared with a feed without a feed group, the litopenaeus vannamei feed added with the rhodotorula paludigenum extract can achieve a better growth effect and improve the immune and oxidation resistance.

Description

technical field [0001] The invention belongs to the technical field of aquatic feed, in particular to a feed for Penaeus vannamei added with marine red yeast extract. Background technique [0002] Shrimp is one of the most popular seafood products. Penaeus vannamei is the most widely cultivated prawn species. It has many advantages such as strong resistance to water environment, low nutritional requirements, fast growth speed, and large meat content in the shrimp body. . However, with the expansion of the culture scale of Penaeus vannamei, the deterioration of the culture environment, the development of diseases such as bacteria, and the low immunity and low survival rate of Penaeus vannamei have seriously affected the healthy development of the Penaeus vannamei industry. Therefore, the autoimmunity of shrimp can be enhanced, and the defense ability of the body can be improved to prevent and treat diseases. [0003] Marine Rhodotorula ( Rhodotorula paludigenum ) is a si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/80A23K10/22A23K10/37A23K20/158A23K20/105A23K10/30A23K20/26A23K20/174A23K10/16A23K20/20A23K20/163
CPCY02A40/818Y02P60/87
Inventor 田丽霞刘永坚牛津陈明李雅婷万米根
Owner SUN YAT SEN UNIV
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