alexa Possibility Of Marine Eukaryote, Thraustochytrids As Novel Probiotic Candidates In Aquaculture
ISSN: 2332-2608

Journal of Fisheries & Livestock Production
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Share This Page

Additional Info

Loading Please wait..

6th Global Summit on Aquaculture and Fisheries 2017
May 25-26, 2017 Osaka, Japan

Yousuke Taoka
University of Miyazaki, Japan
ScientificTracks Abstracts: J Fisheries Livest Prod
DOI: 10.4172/2332-2608-C1-008
World aquaculture production has continued to increase. Fishmeal is used as protein sources for aqua-feeds. However, the price is drastically increased to around 170,000/ ton in 2013 during recent 10 years because of the decrease of fish resources, anchovy. This is serious problem for sustainable aquaculture. Therefore replacement of fishmeal to another resource is urgently needed. Several researchers reported the replacement of protein sources from fishmeal to plants. However, the complete replacement by plant proteins is not established yet because plant sources contained some components that negatively affect the growth of the cultured fish due to the low digestibility. We focused on the “thraustochyrids” as probiotics to enhance the digestibility of plant sources. Thraustochytrids are widely distributed in marine environment and have unique characteristics that accumulate large amount of lipids in cell bodies. Additionally, it is known that thraustochytrids produce various extracellular enzymes including refractory components such as cellulose. In this study, we researched the profile of extracellular enzymes from thraustochytrids and the tolerant ability in the gastrointestinal juices in vitro and in vivo to evaluate the potency as probiotics. Production of various extracellular enzymes, protease, amylase, lipase (tween 80 hydrolytic enzyme), cellulase and tannase were detected depending on the genus or species of thraustochytrids. The tolerance to artificial gastric juices was high in genus Aurantiochytrium and Ulkenia, and low in genus Oblongichytrium. In the case of in vivo test, Aurantiochytrim was recovered from the intestine of Japanese short-necked clam, Ruditapes philippinarum (“Asari” in Japanese). Additionally, we have isolated more than one hundred thraustochytrids from marine environment and are screening probiotic abilities to select adequate strain now. As next step, we are planning the rearing trial with aquaculture-major fish species and supply live thrautochytrids by oral administration.

Yousuke Taoka has completed his PhD from the United Graduate School of Agricultural Sciences, Kagoshima University and Post-doctoral studies from University of Miyazaki. He worked in a commercial fisheries company, Nippon Suisan Kaisha, Ltd. as a Researcher and joined University of Miyazaki in 2011. Recently, he has focused on the production of functional substances from marine microbes and the utilization in the field of aquaculture.

Email: [email protected]

image PDF   |   image HTML

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version