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Feed additive capable of improving intestinal function of grass carps and application of feed additive

A technology for feed additives and intestinal function, which is applied in the field of aquatic product feed additives, and can solve problems such as intestinal atrophy, slow growth of grass carp, and decreased digestion and absorption capacity

Inactive Publication Date: 2015-11-11
YANCHENG TIANBANG FEED SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a grass carp that promotes the growth of grass carp, improves the Antioxidant capacity, feed additives for improving intestinal function of grass carp and their application

Method used

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  • Feed additive capable of improving intestinal function of grass carps and application of feed additive
  • Feed additive capable of improving intestinal function of grass carps and application of feed additive

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0018] Experimental Example 1: Effects of Glycylglutamine (Gly-Gln) on Growth Performance and Antioxidative Immunity of Grass Carp

[0019] Test materials: Glycylglutamine was purchased from Beijing Dingguo Changsheng Biotechnology Co., Ltd., white powder with a purity of 98%.

[0020] The test location: the cage culture base of Chetianjiang Reservoir, Xinhua County, Hunan Province.

[0021] Experimental feed and production: Feed raw materials are crushed and passed through a 60-mesh sieve, and trace ingredients are uniformly mixed by step-by-step expansion method. After mixing, pellet feed with a particle size of 1.5mm-2.0mm is extruded with a feed pellet machine, and air-dried in a cool place Store at -20°C for later use. The test feed was divided into a control group and a glycylglutamine added group (the feed group of the present invention). The feed group of the present invention is to replace 2.5 grams of secondary powder in the control group with 2.5 grams of glycyl...

Embodiment 2

[0030] Example 2: Effects of Glycyl Glutamine on Blood Physiological and Biochemical Indexes of Grass Carp ring

[0031] Test site, test fish, test feed and feeding method are all described in Example 1. After the breeding experiment, 10 grass carp with similar specifications were randomly selected from each cage, and blood was collected from the tail vein with a 1ml syringe. After being refrigerated overnight at 4°C, centrifuged at 3500r / min for 15min, the upper serum was taken for detection of serum biochemical components.

[0032] The test results are shown in Table 3. As can be seen from Table 3, after grass carp is fed with the feed of the present invention adding glycyl glutamine, the content of total cholesterol, super antioxidant dismutase and catalase in serum is significantly lower than that of the control group, while urea nitrogen, glutathione Glycerin, glutathione peroxidase and total antioxidant capacity were significantly higher than those in the control grou...

Embodiment 3

[0035] Example 3: Effects of Glycylglutamine on Grass Carp Intestinal Morphology and Function

[0036] Test site, test fish, test feed and feeding method are all described in Example 1. After the breeding experiment, 3 grass carp were randomly selected from each cage, placed in an ice tray and quickly dissected, and the foregut was washed with 0.86% saline, fixed in Bouin's solution for 24 hours, and paraffin sliced ​​for measurement and analysis. Calculate the height of intestinal villi, depth of crypts, thickness of mucosa, number of goblet cells, and number of lymphocytes; randomly select 6 grass carp from each box, take the foregut, mash it, homogenize it in a water bath, centrifuge and take the supernatant to measure the intestinal Trypsin, lipase and amylase.

[0037] The test results are shown in Table 4. As can be seen from Table 4, after grass carp is fed with the feed of the present invention adding glycyl glutamine, the height of intestinal villi, the depth of cry...

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Abstract

The invention discloses a feed additive capable of improving an intestinal function of grass carps and application of the feed additive. An effective component of the additive is glycylglutamine; and the adding amount in grass carp feed is 0.25-0.75%. With the adoption of the additive disclosed by the invention, the growth and fat metabolism of the grass carps can be effectively facilitated, and the oxidation resistance of the grass carps is improved; a shape structure of small intestines of the grass carps can be improved; villus height, crypt depth, mucous membrane thickness, the quantity of goblet cells and the quantity of lymphocytes of the intestines are increased; and the secretion of an intestinal digestive enzyme can be accelerated, and the feed additive has active improvement effect on the intestinal function of the grass carps.

Description

technical field [0001] The invention relates to a feed additive for aquatic products, in particular to a feed additive for improving intestinal function of grass carp. Background technique [0002] grass carp( Ctenopharyngodonidella ) is an important cultured fish in my country. According to the 2014 China Fishery Statistical Yearbook, the aquaculture output of grass carp was 5.0699 million tons, ranking first in the aquaculture output of freshwater fish. Grass carp is large in size, fast in growth, delicious in meat quality and high in protein content. It is one of the main economic fishes in artificial breeding in my country. However, with the development of aquaculture technology, the continuous increase of aquaculture density, the continuous deterioration of the aquaculture water environment and the degradation of planting resources, it is easy to appear diseases such as hemorrhagic disease, enteritis disease and ascites disease in the process of grass carp aquaculture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16
Inventor 胡毅何志刚王爱民吕富方波陈正勇
Owner YANCHENG TIANBANG FEED SCI & TECH CO LTD
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