alexa Prebiotic Evaluation of Copra-Derived Mannooligosaccharides in White-Leg Shrimps | OMICS International | Abstract
ISSN: 2155-9546

Journal of Aquaculture Research & Development
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Research Article

Prebiotic Evaluation of Copra-Derived Mannooligosaccharides in White-Leg Shrimps

Do Bien Cuong1, Vu Kim Dung2, Nguyen Thi Thu Hien3 and Dang Thi Thu1*

1School of Biotechnology and Food Technology, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi, Vietnam

2Breeding and Biotechnology Center, Vietnam Forestry University, Hanoi, Vietnam

3National Broodstock Center for Mariculture Species in Northern Vietnam. (NACMAN), Research Institute for Aquaculture No 1, Hai Thanh, Duong Kinh, Haiphong, Vietnam

*Corresponding Author:
Dang Thi Thu
School of Biotechnology and Food Technology
Hanoi University of Science and Technology
1 Dai Co Viet, Hanoi, Vietnam
E-mail: [email protected]

Received Date: May 27, 2013; Accepted Date: July 22, 2013; Published Date: July 24, 2013

Citation: Cuong DB, Dung VK, Hien NTT, Thu DT (2013) Prebiotic Evaluation of Copra-Derived Mannooligosaccharides in White-Leg Shrimps. J Aquac Res Development 4:188. doi:10.4172/2155-9546.1000188

Copyright: © 2013 Cuong DB, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

β-Mannooligosaccharides, produced by partial enzymatic hydrolysis of copra pulp residues using recombinant A. niger β-mannanase, were evaluated for its potential use as a prebiotic feed supplement for L. vannamei culture. Results observed in a 30-day feeding trial showed that dietary supplementation of copra-derived MOS, with doses varying from 4 to 10 g kg-1 of dried feed, increased the number of intestinal Lactobacilli and Bifidobacteria in shrimps fed copra-MOS supplemented diets increased approximately from 150-300%. The number of intestinal presumptive Vibrio, Coliforms, Clostridia and Salmonella reduced to 39.6-54.1%, 56.9-65.9%, 71.8-86.1% and 100-100%, respectively. In addition, copra-MOS supplement in the feed led to an enhancement of the weight gain, specific growth rate, feed conversion ratio and feed intake of shrimps (P<0.05). After a 7-day challenging test with Vibrio harveyi pathogen (~106 CFU mL-1) by immersion, the cumulative mortality of the shrimps fed with the diet supplemented 10 g kg-1 copra-MOS was 3.5%, that obviously decreased compared to the control shrimps (29.5% mortality). Taking advantage of its intestinal microflora modulation towards increasing probiotic-like bacteria and Vibriosis resistance, this cheap oligosaccharide will be valuable in various aquatic animal farming.

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