Disease-resistant and yield-increasing feed additive specially used for tilapia mossambica

A feed additive, tilapia technology, applied in the direction of animal feed, animal feed, application, etc., can solve the problem that there is no fish feed additive of Candida chinensis, and achieve the effects of enhancing immunity level, simple preparation method and reducing use.

Active Publication Date: 2015-09-16
RIZHAO CHAOFAN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Disease-resistant and yield-increasing feed additive specially used for tilapia mossambica
  • Disease-resistant and yield-increasing feed additive specially used for tilapia mossambica

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0014] Example 1 Preparation of Nanzhuzi extract

[0015] Weigh 1.2 kg of dried Nanzhuzi, grind it to the end, place it in an extraction device with a round-bottomed flask, add 15L of pure water to reflux extraction for 5h, filter to obtain the water extract, repeat twice, combine the water extracts, Concentrate under reduced pressure to a relative density of 1.10-1.20, let cool, add an equal volume of petroleum ether to extract 3 times, discard the petroleum ether extract, concentrate the water phase under reduced pressure to a thick paste, dry below 70℃, and crush Into a fine powder and sieved through a 100-mesh sieve to obtain the Nanzhuzi extract.

Example Embodiment

[0016] Example 2 The effect of different extracts of Nanzizi on the non-specific immunity of tilapia

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Abstract

The invention provides a disease-resistant and yield-increasing feed additive specially used for tilapia mossambica. The feed additive is Asiatic bilberry extract and can be used for enhancing immunity level of tilapia mossambica and improving survival rate and yield of the tilapia mossambica; meanwhile, raw materials are available, cost is low, efficiency is high, the preparation method is simple, and the feed additive is natural and non-toxic and has no residue, so that usage amount of antibiotic and chemicals is reduced.

Description

technical field [0001] The invention belongs to the technical field of feed additives for aquatic fish, and in particular relates to a special feed additive for tilapia that resists diseases and increases production. Background technique [0002] Tilapia is one of the excellent species promoted by the Food and Agriculture Organization of the United Nations to the whole world. In 2010, my country's tilapia aquaculture production accounted for 39.2% of the world's total production, becoming the leading product of my country's freshwater aquatic product exports. However, with the development of high-density intensive aquaculture, various fish diseases occur frequently, causing huge economic losses. The prevention and treatment of fish diseases mainly includes the use of drugs such as antibiotics for treatment and preventive immunity. Although antibiotics can effectively control the occurrence of a variety of fish diseases, they also lead to the emergence of drug-resistant st...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/16A23K1/14
Inventor 李静
Owner RIZHAO CHAOFAN BIOTECH
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