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Use of alpha lipoic acid as a feed additive for aquatic animals

A technology for aquatic animals and lipoic acid, applied in animal feed, molding or processing of animal feed, medical preparations containing active ingredients, etc., can solve problems such as negative effects on fish performance

Pending Publication Date: 2020-12-22
DSM IP ASSETS BV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, it has been observed that the use of drugs and stress often leads to negative effects on fish performance

Method used

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  • Use of alpha lipoic acid as a feed additive for aquatic animals
  • Use of alpha lipoic acid as a feed additive for aquatic animals
  • Use of alpha lipoic acid as a feed additive for aquatic animals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0175] Embodiment 1: the preparation of pressing fish feed

[0176] The main raw materials are ground and mixed. Minor ingredients are then added to the mixer and a homogeneous mixture is conditioned by adding water and steam to this mass in the preconditioner. This starts the cooking process of the starch fraction (bound components). This material is fed into a granulator. The material is forced through the die of the mill, and the ribbons are broken into pellets on the outside of the die. The moisture content is low, so there is no need to dry the feed.

[0177] Additional oil comprising a fish feed composition according to the invention is then sprayed onto the surface of the pellets, but since the pellets are quite dense, the total lipid content rarely exceeds 24%. The added oil may be fish oil, microbial / algae oil or vegetable oil, such as rapeseed oil or soybean oil, or a mixture of oils. After oil coating, the pellets were cooled in a cooler and bagged. The final ...

Embodiment 2

[0178] Embodiment 2: the preparation method of extruding fish feed

[0179] The main raw materials are ground and mixed. The minor ingredients comprising the fish feed composition according to the invention are added to the mixer. A homogeneous mixture is conditioned by adding water and steam to the mass in a preconditioner. Additional oil may also be added to the feed at this stage. This starts the cooking process of the starch fraction (bound components). Feed the material into the extruder. Extruders can be of the single-screw or twin-screw type. Due to the rotational movement of the material in the extruder, the material is further mixed. Additional oil, water and steam can be added to the feed in the extruder. At the end of the extruder, the temperature of the material is above 100°C and the pressure is above ambient pressure. Material is forced through openings in the extruder pull die. Due to the reduction in temperature and pressure, some of the moisture will i...

Embodiment 3

[0185] Example 3: Process for the Preparation of Alpha-Lipoic Acid Compositions in Oil

[0186] Alpha lipoic acid (AL) in powder form was sieved through a 1 mm sieve to remove larger particles. A small amount of oil is preheated to 45°C and mixed with the powder to form a homogeneous liquid paste. The added oil may be fish oil, microbial / algae oil or vegetable oil, such as rapeseed oil or soybean oil, or a mixture of oils. Add more oil until desired consistency is achieved. Oil acts as a carrier. The AL composition can be sprayed while stirring to prevent AL settling. This composition was used to coat the feedstuffs described in Examples 1 and 2.

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Abstract

The present invention relates to the use of alpha lipoic acid as feed additive for aquatic animals including fish and shrimp, especially for cold water fish as for example salmon, bream, bass and forwarm water fish as for example carp, tilapia, catfish. More particular, this invention relates to the use of alpha lipoic acid for the improvement of the feed conversion ratio and / or daily weight gainin fish, for reducing mortality by regulating the micro flora of the gut and / or by protecting the animal against infections caused by pathogenic viruses.

Description

Background technique [0001] An important factor in aquaculture is the turnover rate. The turnover rate depends on how quickly the fish grow to a harvestable size. [0002] For example, rearing Atlantic salmon from smolt (the physiological stage when Atlantic salmon can first move from freshwater to seawater) to harvestable size takes 12 to 18 months. The quick turnaround has several positive consequences. First, it helps with cash flow. Second, it improves risk management. [0003] The turnover rate may eg be influenced by the feed conversion ratio (FCR), however it may also be influenced by the mortality rate. [0004] It is generally known in the art that mortality is increased by an unbalanced microbial flora and / or by infections caused by pathogenic microorganisms or viruses. Fish diseases are common and are more likely to occur during the growing season. There is also a risk that the fish will escape by accident, for example when the net is moved, or the fish pen is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/00A23K50/80
CPCA23K50/00A23K50/80Y02A40/818Y02A40/81A23K20/147A23K20/158A23K20/163A23K20/174A23K40/20A23K40/25A23K40/30A61K31/355A61K31/415A61K47/44
Inventor 伊丽莎白·阿萨姆拉尔夫·比克代克大卫·克里斯蒂安·马丁薇薇安·维尔哈克
Owner DSM IP ASSETS BV
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