Azaza mohamed salahNational Institute of Marine Sciences and Technologies | INSTM · Department of Aquaculture
Azaza mohamed salah
PhD, HDR
About
35
Publications
77,195
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
983
Citations
Introduction
Additional affiliations
January 2002 - present
Education
September 1997 - December 2009
University of Tunis El-Manar, Faculty of science of Tunis
Field of study
Publications
Publications (35)
The growth of the aquafeed sector is highly dependent upon the availability of fish feed with a balanced nutritional composition. The use of prebiotics and probiotics can be an effective solution to increase the bioavailability of feed components. In this study, we evaluated the effect of dietary supplementation with β-propeller phytase (0, 600, 12...
Whatever the aqua-cultured species, it is crucial that aqua feed be adequate and sustainable, as feeds represent the main contribution to production costs. In the face of this challenge, in the last few decades, substantial efforts have been oriented to identify alternatives to high-cost ingredients (e.g., fishmeal and fish oil) from unconventional...
In order to increase the low-temperature resistance of Nile tilapia, the purpose of this study was to determine the potential effect of ω3 fatty acid incorporation in Oreochromis niloticus diet. To perform this, two experimental diets containing soybean oil (D1) and cod liver oil (D2) have been supplied to juvenile tilapia for 30 days. According to...
A 45-day feeding trial was conducted to assess the capacity of juvenile Nile tilapia (2.12 ± 0.02 g) to utilize different sources of carbohydrate in their diets. Growth performance, nutrient digestibility, hematological parameters, and hepatic oxidative stress were evaluated. Four experimental diets were formulated to be isonitrogenous (25% crude p...
Optimized aquafeeds have long been a major concern of the sustainable aquaculture development. Not only should the feed composition meet the nutritional requirements of the fish, it should also be reasonably managed (feed ration and feeding frequency) to enhance the feed utilisation efficiency, growth performance and decrease the amount of wastes....
Abstract The influence of tuna by-product meal (TBM) diets on the activities of antioxidant enzymes in the muscles, gill and kidney of tilapia was evaluated. The control diet (A0) used fish meal (FM) as the sole source of animal protein and the other three diets (A10-A30), 33%-100% of FM was substituted by TBM at 10% increments. The cytotoxicity of...
The growth dispersion of farmed fish is a subject of increasing interest and one of the most important factors in stocking density. On a duration of 60 days, the effect of stocking density on the growth, coefficient of variation and inter-individual variation of feed intake (CVFI) of juvenile Nile tilapia Oreochromis niloticus L. (14.9 ± 1.2 g) wer...
We have studied the possible use of faba bean meal (FBM) in juvenile Nile tilapia-practical diets by progressively increasing its inclusion level at the expense of dehulled soybean meal (DSBM) in isonitrogenous (27.5%) and isoenergetic formulated (15.20 kJ g− 1) diets. DSBM was replaced by 12, 24 and 36% of FBM (diets 1, 2 and 3, respectively). A d...
The effect of various dietary starch to proteins ratios (STA/P) on growth performance, oxidative status
and liver enzyme activities involved in intermediary metabolism in juvenile Nile tilapia was evaluated. Four isocaloric-practical diets (12.73 MJ kg-�1digestible energy) with increasing STA/CP ratios were formulated. These were designated D0 (344...
Heavy metals can accumulate in organisms via various pathways, including respiration, adsorption and
ingestion. They are known to generate free radicals and induce oxidative and/or nitrosative stress with
depletion of anti-oxidants. Tuna by-product meal (TBM) is rich in proteins and can, therefore, offer an
attractive protein source for animals. Th...
Heavy metals can accumulate in organisms via various pathways, including respiration, adsorption and
ingestion. They are known to generate free radicals and induce oxidative and/or nitrosative stress with
depletion of anti-oxidants. Tuna by-product meal (TBM) is rich in proteins and can, therefore, offer an
attractive protein source for animals. Th...
The salt work of Sfax (southern Tunisia) is a potential site for the exploitation and production of local Artemia. Significant quantities of Artemia (cysts and biomass) are harvested each year and are used in larval feeding. Since this salt work is surrounded by several sources of emissions and pollution, assessing the quality of the cysts and biom...
A 45-day feeding trial was conducted to study the effect of replacing dietary fish meal (FM) with a tuna by-product meal (TBM) on the growth, feed efficiency, carcass composition and stress oxidative status of juvenile Nile tilapia, Oreochromis niloticus L.). Triplicate groups of fish (2.21 ± 0.01 g) were fed on four iso-nitrogenous and iso-energet...
This study aimed at determining the food particle sizes (diameter) that produce the fastest growth (Sopt) in juvenile Nile tilapia, and modeling the growth penalties for particles departing from Sopt. Three 14-day experiments were run with 3, 7 and 11 g juveniles, which were raised in 120-L flow-through cylindro-conical tanks at 29 ± 1 °C, fed at t...
La présente étude a pour objectif la détermination de la taille de première maturité sexuelle, l'estimation de la fécondité ainsi que la taille correspondant à un meilleur rendement de production de larves chez le Tilapia du Nil Oreochromis niloticus (L.) maintenu en captivité dans les eaux géothermales du sud tunisien. Les résultats ont montré que...
La présente étude a pour objectif la détermination de la taille de première maturité sexuelle, l’estimation de la fécondité ainsi que la taille correspondant à un meilleur rendement de production de larves chez le Tilapia du Nil Oreochromis niloticus (L.) maintenu en captivité dans les eaux géothermales du sud tunisien. Les résultats ont montré que...
The growth of Nile tilapia Oreochromis niloticus (0.02-20.00 g) was measured when fed to excess during the hours of light, following their exposure to five thermal regimes fluctuating around the thermal optimum for growth (T(opt) = 30 degrees C) over the diel cycle of day (light, L) and night (dark, N), i.e. 27 degrees C(L):33 degrees C(N), 28.5 de...
This study was undertaken in order to determine the effect of feeding heat-treated, defatted soybean meal (SBM) on growth,
feed utilization, and body composition of Nile tilapia (Oreochromis niloticus). A control diet (SBM0) of 378gkg−1 crude protein with 18.4kJg−1 gross energy was formulated, and three diets identical to the basal diet were autocl...
La présente note signale pour la première fois, la présence du Tilapia, Tilapia rendalli (poisson, cichlidé) dans les eaux marines et littorales du golfe de Gabès. Un nombre important d'individus de cette espèce a été observé dans les eaux du port de pêche de Gabès durant le mois de septembre 2008. La présence de cette espèce dans les eaux marines...
Ce travail consiste à tester l’acclimatation d’une espèce thermophile, le tilapia du Nil Oreochromis niloticus dans la retenue du barrage Lebna (Cap Bon), moyennant un système extensif de grossissement. Les résultats montrent que le tilapia introduit directement en pleine retenue a pu se maintenir et supporter les mauvaises conditions hivernales en...
The potential of waste date meal (WDM; low-quality date palm, Phoenix dactylifera L.) as a carbohydrate source in formulated diets for Nile tilapia was evaluated. Four isocaloric-practical diets (15.7 kJ g−1) were formulated incorporating WDM at 0, 100, 200 and 300 g kg−1 levels as partial substitutes for soybean meal (SBM). These were designated D...
The effects of dietary carbohydrate to protein ratio levels on growth performance and oxidative status were studied in juveniles of Nile tilapia (Oreochromis niloticus). Four practical diets (D0–D3) were formulated incorporating waste date meal (WDM) at 0, 100, 200 and 300 g kg-1 levels as partial substitution for soybean meal (SBM); D0: 28.4% prot...
Growth of juvenile Nile tilapia, Oreochromis niloticus (Maryut strain) was studied under laboratory conditions. Four thermal regimes (22, 26, 30, and 34 °C) were tested on 480 20-day-old fry. Significant (P<0.05) effects of temperature on growth were observed. Results showed that the final mean weight was significantly
higher at 26 and 30 1C than a...
La présente étude a pour objectif la détermination de la taille de première maturité sexuelle, l’estimation de la fécondité ainsi que la taille correspondant à un meilleur rendement de production de larves chez le Tilapia du Nil Oreochromis niloticus (L.) maintenu en captivité dans les eaux géothermales du sud tunisien. Les résultats ont montré que...
The use of green algae ulva meal (UM) (Ulva rigida) was evaluated as a replacement for soybean meal in a practical diet formulated to contain 28% crude protein, 7.50% lipid and 15 kJ gross energy g−1. Soybean meal was replaced by 0%, 10%, 20% and 30% of UM (diets U0, U1, U2 and U3, respectively). The feeding experiment was carried out in an open ci...
Dans le cadre de son programme de recherche baptisé TENMIA (Technologie d’Elevage de Nouvelles Espèces Marines à Intérêt Aquacole), l’INSTM a entrepris une série d’expériences qui visent la maîtrise de la reproduction artificielle et la production d’alevins des muges, Mugil cephalus et Chelon labrosus, en écloserie marine, dans un objectif de diver...
In fish farming practices, stocking density is considered to be one of the important factors that affects fish growth, feed utilization and the gross fish yield. the determination of optimal stocking density to reach best growth is a prerequisite to optimizing production. The full utilization of space for maximum fish production through intensive c...
L’objectif de cette étude est de déterminer la capacité de tolérance à la température et à la salinité chez le tilapia, Oreochromis niloticus, dans des conditions contrôlées au laboratoire. L’influence de la taille et de la température d’acclimatation sur les températures létales chez Oreochromis niloticus ont été étudiées après une période d’accli...
Cette étude s'incère dans le cadre de l'optimisation de l'exploitation des plans d'eau continentaux et la valorisation des importantes ressources en eau géothermales du sud tunisien pour la production d'une nouvelle source de protéine animale dans les régions intérieures défavorisées et mal desservies en poissons.
La première expérience a été réal...
Afin de réduire le coût des aliments aquacoles, nous avons procédé à la substitution d’une matière première végétale importée: le tourteau de soja (TS) par un sous produit local : la farine de tomate (FT). L’expérience est menée sur des juvéniles de Tilapia (Oreochromis niloticus) monosexe mâle ayant un poids moyen initial de 20,54 ± 0,08 g. (poids...
Dans le but de promouvoir l’alimentation du Tilapia en élevage dans les fermes aquacoles tunisiennes, quatre aliments composés secs ont été élaborés à partir de matières premières conventionnelles et contenant différents taux de farine de poisson de fabrication locale (0 %, 10%, 20 % et 30 %). Ces aliments composés, de 36 % de protéines brutes et 6...
