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Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei. / John Thompson

Swansea University Author: John Thompson

Abstract

A significant problem faced by the aquaculture industry is the loss of stock through infection and disease. Cultured animals, particularly larval and post-larval stages, suffer increased incidences of disease primarily as a result of the high population densities at which they aie stocked. Thus far...

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Published: 2009
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
URI: https://cronfa.swan.ac.uk/Record/cronfa42345
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first_indexed 2018-08-02T18:54:29Z
last_indexed 2018-08-03T10:09:54Z
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spelling 2018-08-02T16:24:28.9165885 v2 42345 2018-08-02 Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei. 99f2ad3307340a71e20a07c95336022d NULL John Thompson John Thompson true true 2018-08-02 A significant problem faced by the aquaculture industry is the loss of stock through infection and disease. Cultured animals, particularly larval and post-larval stages, suffer increased incidences of disease primarily as a result of the high population densities at which they aie stocked. Thus far the typical approach to bacterial pathogen control in the majority of commercial crustacean aquaculture facilities involves the prophylactic (and often incorrect) use of antimicrobials, i.e. antibiotics and chemotherapeutic agents. These are however costly to develop, limited in their application and most significantly are instrumental in creating antibiotic resistant strains. Many current theories in crustacean pathogen control embrace a multifaceted approach, often combining the therapeutic use of antibiotics/chemotherapeutic agents with the administration of probiotic bacteria and immunostimulants and improved farm management. The purpose of this project was to identify any benefits and potential mechanisms by which probiotic bacteria may act on the health/growth parameters of the commercial aquaculture species, Litopenaeus vannamei and Euiopean shore crab, Carcinus maenas. Work was also undertaken to isolate and identify bacteria from healthy shrimp microbiota that may be of use as probiotics, with the possibility of commercial application within the industry. In vitro methods were utilised for screening potential probiotics for inhibitory activity against crustacean pathogens, followed by a series of in vivo trials to assess the effects of probiotic feed enrichment on the gut bacterial population and growth parameters. Molecular techniques were utilised to elucidate any effects probiotic administration may have on the bacterial community structure of the gut of L. vannamei. E-Thesis Aquatic sciences.;Animal sciences. 31 12 2009 2009-12-31 COLLEGE NANME Biosciences COLLEGE CODE Swansea University Doctoral Ph.D 2018-08-02T16:24:28.9165885 2018-08-02T16:24:28.9165885 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences John Thompson NULL 1 0042345-02082018162447.pdf 10798053.pdf 2018-08-02T16:24:47.1700000 Output 18250893 application/pdf E-Thesis true 2018-08-02T16:24:47.1700000 false
title Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei.
spellingShingle Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei.
John Thompson
title_short Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei.
title_full Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei.
title_fullStr Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei.
title_full_unstemmed Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei.
title_sort Studies into the potential application of probiotic bacteria as feed supplements for commercially cultured Crustacea, primarily the Pacific white shrimp, Litopenaeus vannamei.
author_id_str_mv 99f2ad3307340a71e20a07c95336022d
author_id_fullname_str_mv 99f2ad3307340a71e20a07c95336022d_***_John Thompson
author John Thompson
author2 John Thompson
format E-Thesis
publishDate 2009
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description A significant problem faced by the aquaculture industry is the loss of stock through infection and disease. Cultured animals, particularly larval and post-larval stages, suffer increased incidences of disease primarily as a result of the high population densities at which they aie stocked. Thus far the typical approach to bacterial pathogen control in the majority of commercial crustacean aquaculture facilities involves the prophylactic (and often incorrect) use of antimicrobials, i.e. antibiotics and chemotherapeutic agents. These are however costly to develop, limited in their application and most significantly are instrumental in creating antibiotic resistant strains. Many current theories in crustacean pathogen control embrace a multifaceted approach, often combining the therapeutic use of antibiotics/chemotherapeutic agents with the administration of probiotic bacteria and immunostimulants and improved farm management. The purpose of this project was to identify any benefits and potential mechanisms by which probiotic bacteria may act on the health/growth parameters of the commercial aquaculture species, Litopenaeus vannamei and Euiopean shore crab, Carcinus maenas. Work was also undertaken to isolate and identify bacteria from healthy shrimp microbiota that may be of use as probiotics, with the possibility of commercial application within the industry. In vitro methods were utilised for screening potential probiotics for inhibitory activity against crustacean pathogens, followed by a series of in vivo trials to assess the effects of probiotic feed enrichment on the gut bacterial population and growth parameters. Molecular techniques were utilised to elucidate any effects probiotic administration may have on the bacterial community structure of the gut of L. vannamei.
published_date 2009-12-31T03:52:47Z
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score 11.037581

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