Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae)

A series of experiments were conducted to evaluate the use of tropical fodder legume, Gliricidia sepium leaf as a potential source of protein in the diet of Mozambique tilapia, Oreochromis mossambicus. The effect of leaf age (plant leaf harvesting time) on crude protein (CP) and crude fiber (CF)...

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Main Author:	Temesgen, Gebeyehu Gebre-Michael
Format:	Thesis
Language:	English English
Published:	2004
Subjects:	Gliricidia sepium - Mozambique tilapia - Case studies
Online Access:	http://psasir.upm.edu.my/id/eprint/57/1/1000548929_t_FP_2004_51.pdf
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spelling	my-upm-ir.572013-05-27T06:45:21Z Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae) 2004-12 Temesgen, Gebeyehu Gebre-Michael A series of experiments were conducted to evaluate the use of tropical fodder legume, Gliricidia sepium leaf as a potential source of protein in the diet of Mozambique tilapia, Oreochromis mossambicus. The effect of leaf age (plant leaf harvesting time) on crude protein (CP) and crude fiber (CF) contents of Gliricidia sepium were determined. G. sepium trees were pruned and leaf samples were taken monthly for five months. Results from chemical analyses of leaves revealed that in terms of its crude protein content, G. iv sepium leaves need to be harvested within 1-3 months after cutting. Leaves harvested from older trees tend to contain less protein. The chemical composition and apparent protein digestibility (APD) of Gliricidia sepium leaves by tilapia, O. mossambicus, were also investigated. G. sepium leaf meal was found to contain high (26.0%) crude protein but low in essential amino acids such as histidine, isoleucine, leucine, phenylalanine, valine and methionine. The apparent protein digestibility was found to be about 56%. In addition, G. sepium has the high crude fiber content. The optimum inclusion level of G. sepium leaf meal in tilapia (O. mossambicus) diet was also determined. Six diets containing 0%, 10%, 25%, 40%, 50% and 88% G. sepium leaf meal were prepared and fed at 4% per body weight per day for 27 g tilapia for 70 days. Growth performances data obtained revealed that the optimum inclusion level of G. sepium leaf meal is 40% of the total diet. Inclusion of G. sepium leaf meal above this level resulted in lower growth of O. mossambicus. The effect of different feeding rate on the performance of G. sepium leaf meal as O. mossambicus diet was also evaluated. Fish were fed diet containing 40% G. sepium leaf meal at 2%, 3%, 4% and 5% per fresh body weight per day. Data on growth and feed utilization performances showed v that O. mossambicus can be fed diet containing 40% G. sepium leaf meal at two percent of wet body weight per day. This feeding rate resulted in statistically comparative growth and feed utilization performance by the tilapia with 3%, 4% and 5% feeding rates. In addition to these, two processing methods of G. sepium leaf meal were compared. Three diets were prepared: 1) a control diet (using fishmeal as sole protein source), 2) oven-dried and 3) presoaked and dried G. sepium leaf meal. The diets were fed to O. mossambicus fingerlings for 70 days. Growth and feed utilization performances of O. mossambicus showed that the three diets resulted in similar performances. It was therefore concluded that G. sepium leaf meal can be used as oven-dried (unsoaked) meal. This might be due to the fact that the major anti-nutritional factors found in this legume are so low in the leaf part of the plant. Gliricidia sepium - Mozambique tilapia - Case studies 2004-12 Thesis http://psasir.upm.edu.my/id/eprint/57/ http://psasir.upm.edu.my/id/eprint/57/1/1000548929_t_FP_2004_51.pdf application/pdf en public phd doctoral Universiti Putra Malaysia Gliricidia sepium - Mozambique tilapia - Case studies Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Gliricidia sepium - Mozambique tilapia - Case studies
spellingShingle	Gliricidia sepium - Mozambique tilapia - Case studies Temesgen, Gebeyehu Gebre-Michael Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae)
description	A series of experiments were conducted to evaluate the use of tropical fodder legume, Gliricidia sepium leaf as a potential source of protein in the diet of Mozambique tilapia, Oreochromis mossambicus. The effect of leaf age (plant leaf harvesting time) on crude protein (CP) and crude fiber (CF) contents of Gliricidia sepium were determined. G. sepium trees were pruned and leaf samples were taken monthly for five months. Results from chemical analyses of leaves revealed that in terms of its crude protein content, G. iv sepium leaves need to be harvested within 1-3 months after cutting. Leaves harvested from older trees tend to contain less protein. The chemical composition and apparent protein digestibility (APD) of Gliricidia sepium leaves by tilapia, O. mossambicus, were also investigated. G. sepium leaf meal was found to contain high (26.0%) crude protein but low in essential amino acids such as histidine, isoleucine, leucine, phenylalanine, valine and methionine. The apparent protein digestibility was found to be about 56%. In addition, G. sepium has the high crude fiber content. The optimum inclusion level of G. sepium leaf meal in tilapia (O. mossambicus) diet was also determined. Six diets containing 0%, 10%, 25%, 40%, 50% and 88% G. sepium leaf meal were prepared and fed at 4% per body weight per day for 27 g tilapia for 70 days. Growth performances data obtained revealed that the optimum inclusion level of G. sepium leaf meal is 40% of the total diet. Inclusion of G. sepium leaf meal above this level resulted in lower growth of O. mossambicus. The effect of different feeding rate on the performance of G. sepium leaf meal as O. mossambicus diet was also evaluated. Fish were fed diet containing 40% G. sepium leaf meal at 2%, 3%, 4% and 5% per fresh body weight per day. Data on growth and feed utilization performances showed v that O. mossambicus can be fed diet containing 40% G. sepium leaf meal at two percent of wet body weight per day. This feeding rate resulted in statistically comparative growth and feed utilization performance by the tilapia with 3%, 4% and 5% feeding rates. In addition to these, two processing methods of G. sepium leaf meal were compared. Three diets were prepared: 1) a control diet (using fishmeal as sole protein source), 2) oven-dried and 3) presoaked and dried G. sepium leaf meal. The diets were fed to O. mossambicus fingerlings for 70 days. Growth and feed utilization performances of O. mossambicus showed that the three diets resulted in similar performances. It was therefore concluded that G. sepium leaf meal can be used as oven-dried (unsoaked) meal. This might be due to the fact that the major anti-nutritional factors found in this legume are so low in the leaf part of the plant.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Temesgen, Gebeyehu Gebre-Michael
author_facet	Temesgen, Gebeyehu Gebre-Michael
author_sort	Temesgen, Gebeyehu Gebre-Michael
title	Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae)
title_short	Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae)
title_full	Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae)
title_fullStr	Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae)
title_full_unstemmed	Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae)
title_sort	utilization of gliricidia sepium leaf meal as protein source in diets of mozambique tilapia, oreochromis mossambicus (piscs: cichlidae)
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Agriculture
publishDate	2004
url	http://psasir.upm.edu.my/id/eprint/57/1/1000548929_t_FP_2004_51.pdf
_version_	1747810157262274560

Utilization of Gliricidia Sepium Leaf Meal as Protein Source in Diets of Mozambique Tilapia, Oreochromis Mossambicus (Piscs: Cichlidae)

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