@article { author = {}, title = {Biochemical studies in Oreochromis niloticus exposed to lead acetate and treated by carob or fig ether extracts}, journal = {Egyptian Journal for Aquaculture}, volume = {7}, number = {1}, pages = {1-14}, year = {2017}, publisher = {Blue Resources for Aquaculture, Environment and Society Development}, issn = {2090-7877}, eissn = {2636-3984}, doi = {10.21608/eja.2019.31470}, abstract = {The  effect of carob pods (Ceratonia siliqua)  and fig fruits (ficus carica) ether extracts 600 mg/kg in  the diet   against  sublethal doses of Pb (1/2  and 1/4 LC50)  on   aspartate amino transferase (AST) , alanine amino transferase (ALT) , urea  , creatinine  and   accumulation of lead in muscle and visceral organs in  (Oreochromis niloticus) was investigated .The half  lethal  concentration (LC50) for 96 hr was 155 mg/l . Results showed that   aspartate amino transferase (AST) , alanine amino transferase (ALT) , urea  , creatinine  and   accumulation of lead in muscle and visceral organs was increased after exposed to 1/2 LC50 and 1/4 LC50 of  Pb for 30 ,60 and 90 days. On the other hand  O. niloticus exposed to 1/2 LC50 and 1/4 LC50 of  Pb and fed with diet contain 600 mg of carob  extract /kg for 90 days showed  no significant changes in  creatinine ,   accumulation of  lead in muscle and visceral . Also  the fish exposed to 1/2 LC50 and 1/4 LC50 of  Pb  and fed with diet contain 600 mg of fig  extract /kg for 90 days revealed  no significant changes  in  AST , ALT , urea , creatinine ,   accumulation of lead  in muscle and visceral organs.It could be concluded that both carob and fig ether extracts had ameliorative effect against lead acetate toxicity in Oreochromis niloticus.}, keywords = {}, url = {https://eja.journals.ekb.eg/article_31470.html}, eprint = {https://eja.journals.ekb.eg/article_31470_c186c27643c6eb969c311fe0ccddfbd7.pdf} } @article { author = {}, title = {ARTIMIZIA EXTRACT AS GROWTH PROMOTORES AND INCREASED OREOCHROMIS NILOTICUS (L.) RESISTANT AGAINST A. Hydrophilia}, journal = {Egyptian Journal for Aquaculture}, volume = {7}, number = {1}, pages = {15-33}, year = {2017}, publisher = {Blue Resources for Aquaculture, Environment and Society Development}, issn = {2090-7877}, eissn = {2636-3984}, doi = {10.21608/eja.2019.31471}, abstract = {The main objective of this study was the use of (Artimizia) extract as immunostimulant effect, growth promoters and fish resistance to Aeromonas hydrophila infection; in Nile tilapia, Oreochromis nilocticus fingerlings.  Four monosex fish (12 ± 2 gram) groups fed commercial diets (30% crude protein) and isocaloric (4.4 kcal/gm) contained 0.0 (control) and 0.5, 1, and 1.5% of Artimizia extract. All diets are isonitrogenous. The result showed that Diet containing 0.5% Artimizia extract significantly (p< 0.05) gave the better growth  performance as reflected in weight gain %, Specific Growth Rate (SGR), Feed Conversion Ratio (FCR), Feed Efficiency Ratio (FER), Protein Efficiency Ratio (PER), Apparent Protein Utilization (APU) and Energy Utilization (EU). Also the survival rate was enhanced. Artimizia extract supplemented diet had no effect on body composition of O. nilotiticus. (Artimizia) extract supplement diet improved fish health, which improved Hemoglobin (Hb), Red Blood Cells (RBCs), hematocrit (PCV), total protein, albumin and globulin while showed a decrease in creatinine, urea, Aspartate aminotransferase (AST), Alanine aminotransferase (ALT) and glucose in all treatment groups. Artimizia extract supplement diet had Positive effect on Hb, RBCS, PCV, total Protein, albumin, globulin, creatinin, glucose, urea, AST and ALT. }, keywords = {}, url = {https://eja.journals.ekb.eg/article_31471.html}, eprint = {https://eja.journals.ekb.eg/article_31471_df6f9b89bffc904460e27b8236b06756.pdf} } @article { author = {}, title = {EFFECT OF MYRRAH EXTRACT ON GROWTH PERFORMANCE AND ANTIBCTERIAL INFECTION OF OREOCHROMIS NILOTICUS (L.)}, journal = {Egyptian Journal for Aquaculture}, volume = {7}, number = {1}, pages = {35-54}, year = {2017}, publisher = {Blue Resources for Aquaculture, Environment and Society Development}, issn = {2090-7877}, eissn = {2636-3984}, doi = {10.21608/eja.2019.31472}, abstract = {The main objective of this study was showing the effect of myrrah extract at different levels as growth promoters on growth performance, feed utilization, whole-body composition and Aeromonas hydrophila; challenge for all-male Nile tilapia, Oreochromis nilocticus fingerlings. Four experimental diets were formulated to contain 0.0 (control) and 0.5, 1, and 1.5% for myrrah. All diets are isonitrogenous (30% crude protein) and isocaloric (4.4 kcal/gm GE). The study was conducted in triplicate treatments. Each aquarium was stocked with 15 fingerlings of an average weight 12±2 gm. Experimental  diets were provided at a rate of 3 % of live body weight of total biomass, twice/day, 6 days a week, for 90 days. Diet containing 1% Myrrah resulted significantly (p < 0.05) in improvement in growth performance and feed utilization as reflected in gain %, Specific Growth Rate (SGR), Feed Conversion Ratio (FCR), Feed Efficiency Ratio (FER), Protein Efficiency Ratio (PER), Apparent Protein Utilization (APU) and Energy Utilization (EU). The survival rate was enhanced due to the inclusion of myrrah in fish diets. With regard to body composition, there was no significant difference in dry matter, protein, lipids, and ash (p > 0.05) contents which could be related to the levels of mirra meal in the experimental diets. Blood plasma profile showed an improvement in Hemoglobin (Hb), Red Blood Cells (RBCs), hematocrit (PCV), total protein, albumin and globulin while showed a decrease in creatinine, urea, Aspartate aminotransferase (AST), Alanine aminotransferase (ALT) and glucose in all treatment groups. Myrrah were found to have antibacterial activity antagonized to A. hydrophila in O. niloticus.}, keywords = {}, url = {https://eja.journals.ekb.eg/article_31472.html}, eprint = {https://eja.journals.ekb.eg/article_31472_70ad35e455867b7c82b78c0891c1ba6b.pdf} } @article { author = {Abdel-Hamid, Eman}, title = {Assessment of Some Water Quality Characteristics and Bacterial Contamination in Water, Sediments and Some Fish species of El-Manzala Lake}, journal = {Egyptian Journal for Aquaculture}, volume = {7}, number = {1}, pages = {55-75}, year = {2017}, publisher = {Blue Resources for Aquaculture, Environment and Society Development}, issn = {2090-7877}, eissn = {2636-3984}, doi = {10.21608/eja.2019.31473}, abstract = {Water plays a vital role in the proper functioning of earth ecosystem and also essential for fish life. In autumn season, 2016, three different regions from El-Manzla Lake (El-Boughaz, Domiette and El-Ganka) were selected to determine their water quality and bacterial contaminations. Water, sediment and fish samples were collected from four different sites of each region. The selected regions are exposing to direct and indirect industrial, municipal wastewater and agricultural drainage disposals. The results showed that El-Ganka region had significantly (P<0.05) highest nitrogenous compounds (NH3-N, NO2 & NO3), total nitrogen, total and available phosphorus and Chlorophyll a followed by Domiette and then El-Boughaz. While had the significantly (P<0.05) lowest pH and secchi disk (SD). Water exchange between the Mediterranean Sea and the lake led to significant increase values (P<0.05) in its salinity and conductivity at the El-Boughaz region. Also, some bacteriological characteristics (Bacterial count, coliform and some pathogens) in water, sediment and some fish organs (skin, muscle & gills) of Oreochromis niloticus and Clarias gariepinus were determined.  Total bacterial count, coliform group, fecal coliform and Vibrio cholera recoded higher values in sediment than in water. Total bacterial count and coliform group in the muscle of the two investigated fish species had lower values than skin and gills, while fecal coliform and vibrio were not detected. Gills recorded higher values than those in the skin. Muscles of Clarias gariepinus recorded higher levels in all bacterial parameters than the Oreochromis niloticus in contrast the skin and gills. On base of the present study, it could be concluded that Manzala' lake water resources need more attention to be protected for aquaculture purposes and sustainable development through the detection of aquatic biological agents and possible control of water quality.}, keywords = {water quality,Sediment,fish,Bacterial contamination,Nile tilapia,catfish}, url = {https://eja.journals.ekb.eg/article_31473.html}, eprint = {https://eja.journals.ekb.eg/article_31473_fb9db074af86d1aee7e02bd229a8f996.pdf} }