Feed additive suitable for stomachless fish and containing high-temperature-resistant neutral lipase and application of feed additive

A feed additive and neutral lipase technology, applied in the field of feed additives, can solve the problems of complex lipase research and development, lack of gastric differentiation, etc., and achieve the effects of improving apparent digestibility, improving health status, and improving body shape

Active Publication Date: 2016-06-01
WUHAN SUNHY BIOLOGICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in aquaculture animals, especially freshwater economic fish such as green, grass, carp, crucian carp, and bream, which have a large aquaculture area and a large aquaculture output in my country, there are few reports on the research and application of lipase. It is because these farmed fish lack the differentiation of the stomach during the development of the digestive system, and their digestive tracts are mostly in a neutral environment, which is quite different from livestock and poultry, which leads to the research and development of lipases suitable for them. Development is much more complex than livestock

Method used

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  • Feed additive suitable for stomachless fish and containing high-temperature-resistant neutral lipase and application of feed additive
  • Feed additive suitable for stomachless fish and containing high-temperature-resistant neutral lipase and application of feed additive
  • Feed additive suitable for stomachless fish and containing high-temperature-resistant neutral lipase and application of feed additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Based on 100% by mass, 10% of lipase, 10% of sucrose fatty acid ester, 5% of vitamin E, and 75% of rice husk powder are fully mixed and dried to form a powder to obtain the feed additive of the present invention.

[0015] In order to verify the effect of the feed additive, tests were carried out in the following manner.

[0016] 120 grass carp whose average body weight is (121.5 ± 3.41) grams are divided into 2 groups on average, and each group of 3 parallels is fed with basal feed and feed containing the feed additive of the present invention respectively. Body fatness, liver-to-body ratio, intestinal fat ratio, apparent digestibility of crude fat, fat content in hepatopancreas, and activities of lipoproteinase, liver lipase, total lipase, aspartate aminotransferase, and alanine aminotransferase in hepatopancreas . The results are shown in Table 1:

[0017] The impact of table 1 feeding additives of the present invention on grass carp

[0018]

[0019] The result...

Embodiment 2

[0021] According to the mass percentage of 100%, take 40% of neutral lipase, 40% of soybean lecithin, 10% of vitamin E, and 10% of corncob powder, mix well and dry to make a powder, which can promote the digestion and absorption of fat in grass carp feed feed additives.

[0022] In order to verify the effect of the feed additive, tests were carried out in the following manner.

[0023] Select 360 healthy herrings with the same size and average weight of (5.1±0.73) grams and divide them into 3 groups on average, with 3 fish in parallel in each group, and feed them with feed with a crude fat content of 5% (high-fat group), and with a crude fat content of 5%. 4.5% feed (low-fat group) and crude fat content are 4.5% and contain the feed (test group) of feed additive of the present invention, after having carried out 8 weeks breeding test, measure and calculate the weight gain rate of each group of fish , specific growth rate, apparent digestibility of crude fat, feed factor, and ...

Embodiment 3

[0028] According to 100% by mass percentage, take 30% of neutral lipase, 10% of sucrose fatty acid ester, 5% of vitamin E, and 55% of corn cob powder respectively, fully mix and dry to make a powder, that is, the fat in grass carp feed can be obtained. Feed additive for digestion and absorption.

[0029] In order to compare the effects of adding each single component in the present invention and the additive of the present invention respectively, tests were carried out in the following manner.

[0030] Select 1200 grass carp with an average body weight of (14.5 ± 0.5) grams and divide them into 5 groups on average, with 3 parallels in each group, and 40 test fishes in each parallel, and feed them with basic feed and basal feed containing neutral lipase and sucrose fatty acid ester. , vitamin E and the feed of the feed additive of the present invention, compared the growth performance of the fish body, feed utilization and fat utilization in aspects such as deposition after car...

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Abstract

The invention relates to the field of feed additives, in particular to a feed additive suitable for stomachless fish and containing high-temperature-resistant neutral lipase and application of the feed additive. The feed additive is prepared from, by weight, 10-40% of lipase, 10-40% of emulgator, 5-10% of vitamin E and the balance carriers. According to the feed additive, the apparent digestibility of fish for fat in feed is improved, and accumulation of fat in livers and mesenterium is reduced; injuries of fat to livers of fish are reduced, and the health condition of fish bodies is improved; figures of fish bodies are improved, and commodity of cultured fish is improved.

Description

technical field [0001] The invention relates to the field of feed additives, in particular to a feed additive containing high-temperature-resistant neutral lipase suitable for stomachless fish and an application thereof. Background technique [0002] Lipase, also known as triacylglycerol acyl hydrolase, is a class of enzymes that decompose and synthesize fat. It can not only catalyze ester hydrolysis, but also catalyze ester synthesis and transesterification. Lipase is a kind of digestive enzyme. Exogenous fat needs to be digested and decomposed into free fatty acid, glycerol and monoglyceride before it can be used by animals. The storage and use of fat in the body is also indispensable for lipase. Lipase also participates in intracellular lipid metabolism. In recent years, lipase has been widely used in livestock and poultry feed because of its unique physiological functions and effects. However, in aquaculture animals, especially freshwater economic fish such as green, g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/80A23K20/189A23K20/158A23K20/174
CPCY02A40/818
Inventor 吴建军周樱詹志春邱权
Owner WUHAN SUNHY BIOLOGICAL
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