Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.)

Steviol glycoside is a healthy low calorie natural sweetener extracted from a bushy plant, Stevia rebaudiana Bertoni which is used in the human food industry. Despite extensive research conducted to investigate the properties of steviol glycoside for human consumption, only a few reports is avail...

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Main Author:	Choy, Jason Min Sheng
Format:	Thesis
Language:	English
Published:	2019
Subjects:	Tilapia - Research
Online Access:	http://psasir.upm.edu.my/id/eprint/83977/1/FP%202019%2037%20-%20ir.pdf
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id	my-upm-ir.83977
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spelling	my-upm-ir.839772022-01-04T07:04:37Z Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.) 2019-02 Choy, Jason Min Sheng Steviol glycoside is a healthy low calorie natural sweetener extracted from a bushy plant, Stevia rebaudiana Bertoni which is used in the human food industry. Despite extensive research conducted to investigate the properties of steviol glycoside for human consumption, only a few reports is available on its use in aquafeeds. This research aimed to investigate the potential of steviol glycoside in the diet of the fish by measuring the survival, growth index, gut short chain fatty acid and blood plasma biochemistry. Tilapia were fed diets prepared by two different methods: extrusion and compact pelletization. The effects of supplementation of 0, 1, 3 and 6% of dietary steviol glycoside on the survival, growth, blood plasma chemistry and short chain fatty acid of red tilapia were investigated. Both experiments showed that stevia had no significant effects on fish growth, proximate and short chain fatty acid composition. However, an apparent sweet smelling taste was observed while manufacturing the feeds using a common pelletizer. In addition, increasing dietary steviol glycoside level in feed made with a common pelletizer decreased hepatosomatic index (HIS) indicating stress while extruded feeds with increasing amount of dietary steviol glycoside resulted in higher viserosomatic index (VSI) indicating more fat was deposited in the viscera. Further plasma analysis between stevia-free and 6% steviol glycoside fed fish showed no significant differences in blood plasma glucose, total protein, cholesterol and triglycerides. In conclusion, dietary steviol glycoside did not give any beneficial effect to hybrid red tilapia. Inclusion of 6%, in fact, indicated stress based on the decrease in HSI and irregular changes in blood plasma biochemistry of glucose, total protein, triglycerides and cholesterol trend. Tilapia - Research 2019-02 Thesis http://psasir.upm.edu.my/id/eprint/83977/ http://psasir.upm.edu.my/id/eprint/83977/1/FP%202019%2037%20-%20ir.pdf text en public masters Universiti Putra Malaysia Tilapia - Research Kamarudin, Mohd Salleh
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Kamarudin, Mohd Salleh
topic	Tilapia - Research
spellingShingle	Tilapia - Research Choy, Jason Min Sheng Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.)
description	Steviol glycoside is a healthy low calorie natural sweetener extracted from a bushy plant, Stevia rebaudiana Bertoni which is used in the human food industry. Despite extensive research conducted to investigate the properties of steviol glycoside for human consumption, only a few reports is available on its use in aquafeeds. This research aimed to investigate the potential of steviol glycoside in the diet of the fish by measuring the survival, growth index, gut short chain fatty acid and blood plasma biochemistry. Tilapia were fed diets prepared by two different methods: extrusion and compact pelletization. The effects of supplementation of 0, 1, 3 and 6% of dietary steviol glycoside on the survival, growth, blood plasma chemistry and short chain fatty acid of red tilapia were investigated. Both experiments showed that stevia had no significant effects on fish growth, proximate and short chain fatty acid composition. However, an apparent sweet smelling taste was observed while manufacturing the feeds using a common pelletizer. In addition, increasing dietary steviol glycoside level in feed made with a common pelletizer decreased hepatosomatic index (HIS) indicating stress while extruded feeds with increasing amount of dietary steviol glycoside resulted in higher viserosomatic index (VSI) indicating more fat was deposited in the viscera. Further plasma analysis between stevia-free and 6% steviol glycoside fed fish showed no significant differences in blood plasma glucose, total protein, cholesterol and triglycerides. In conclusion, dietary steviol glycoside did not give any beneficial effect to hybrid red tilapia. Inclusion of 6%, in fact, indicated stress based on the decrease in HSI and irregular changes in blood plasma biochemistry of glucose, total protein, triglycerides and cholesterol trend.
format	Thesis
qualification_level	Master's degree
author	Choy, Jason Min Sheng
author_facet	Choy, Jason Min Sheng
author_sort	Choy, Jason Min Sheng
title	Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.)
title_short	Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.)
title_full	Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.)
title_fullStr	Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.)
title_full_unstemmed	Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.)
title_sort	efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (oreochromis sp.)
granting_institution	Universiti Putra Malaysia
publishDate	2019
url	http://psasir.upm.edu.my/id/eprint/83977/1/FP%202019%2037%20-%20ir.pdf
_version_	1747813428622262272

Efficacy of steviol glycoside supplementation on survival growth and blood biochemistry profiles of hybrid red tilapia (Oreochromis sp.)

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