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Nucleotide feed additive for tilapia

A feed additive and nucleotide technology, which is applied in the field of fish feed additives and tilapia feed additives, to achieve the effects of increasing the activity of superoxide dismutase and lysozyme, increasing the length of the intestinal tract, and improving the nutritional value

Active Publication Date: 2013-04-03
NANJING BIOTOGETHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a new type of feed additive, nucleotides are less studied in aquaculture

Method used

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  • Nucleotide feed additive for tilapia
  • Nucleotide feed additive for tilapia
  • Nucleotide feed additive for tilapia

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A nucleotide feed additive for tilapia: Saccharomyces cerevisiae is used as a raw material, the extracted ribonucleic acid is subjected to enzymolysis, and then the enzymolysis solution is directly spray-dried to obtain four kinds of nucleotides AMP, CMP, GMP, The mixed nucleotides of UMP, the mixed nucleotides contain the following components by weight percentage: 50% mixed nucleotides, 18% crude protein, 4% crude fat, 20% ash, and 8% water. Detect the content of four nucleotides, on this basis, add an appropriate amount of pure single nucleotides, so that the weight ratio between the four nucleotides is: adenylic acid: cytidylic acid: guanylic acid: uridylic acid =1.0:0.8:1.9:0.8, in this additive, the total content of nucleotides is finally 61.3%.

Embodiment 2

[0025] A nucleotide feed additive for tilapia: baker's yeast is used as a raw material, the extracted ribonucleic acid is subjected to enzymolysis, and then the enzymolysis solution is directly spray-dried to obtain four kinds of nucleotides AMP, CMP, GMP, The mixed nucleotides of UMP, the mixed nucleotides contain the following components by weight percentage: 42% mixed nucleotides, 18% crude protein, 6% crude fat, 25% ash, and 9% water. Then add an appropriate amount of pure mononucleotide on its basis, so that the weight ratio between the four nucleotides is: adenylic acid: cytidylic acid: guanylic acid: uridylic acid=1.5:1.2:1.6:1.5 , in this additive, the total content of nucleotides is finally 52.7%.

Embodiment 3

[0027] A nucleotide feed additive for tilapia: using Candida tropicalis as a raw material, enzymatically hydrolyzing the extracted ribonucleic acid, and then directly spray-drying the enzymatic solution to obtain four kinds of nucleotides AMP, CMP, Mixed nucleotides of GMP and UMP, the mixed nucleotides contain the following components by weight percentage: 60% mixed nucleotides, 14% crude protein, 2% crude fat, 19% ash, and 5% moisture. , and then add an appropriate amount of pure mononucleotide on its basis, so that the weight ratio between the four nucleotides is: adenylic acid: cytidylic acid: guanylic acid: uridylic acid = 0.9:0.9:1.1 1.4 , in this additive, the total content of nucleotides is finally 69.3%.

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Abstract

The invention discloses a nucleotide feed additive for tilapia. The nucleotide feed additive is characterized in that nucleotide comprises adenylic acid 5'-AMP, cytidylic acid 5'-CMP, guanylic acid 5'-GMP and uridylic acid 5'-UMP in a weight ratio of (0.9-1.5):(0.7-1.2):(1.1-2.0):(0.8-1.5). The nucleotide feed additive has the beneficial effects that the nucleotide feed additive can obviously increase the length of the intestinal tract of tilapia and improve the growth efficiency, feed utilization rate and environment tolerance of tilapia, and at the same time, the non-specific immunity of tilapia is greatly enhanced by adding nucleotide, which have profound significance for the present intensive culture industry of intensive tilapia.

Description

technical field [0001] The invention relates to a fish feed additive, in particular to a tilapia feed additive, and belongs to the field of fish farming. Background technique [0002] Tilapia native to Africa does not require high external environmental conditions, has strong adaptability and reproductive ability, short breeding cycle, rich nutrition, delicious meat and rich in protein, calcium, phosphorus, iron and vitamins Wait. So now tilapia has become the most active trade object of aquatic products in the international market and has a broad market prospect. [0003] However, in the process of high-density farming of tilapia at present, there are generally high feed coefficients, low feed conversion ratios, abuse of chemically synthesized drugs, deterioration of the water environment caused by high feed coefficients, and subsequent fish problems. Decreased immune system etc. Moreover, as the price of global energy and food resources continues to increase in recent y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16
Inventor 陈晓春黄小权蔡家栋张磊盛兵李淑亚汤亦文
Owner NANJING BIOTOGETHER
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