The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613118320140901The protective role of copper nicotinate and vitamin E against neem seed oil induced oxidative stress and histopathological changes in Nile Tilapia (Oreochromis niloticus, Linnaeus, 1758)119221410.21608/ejabf.2014.2214ENAshraf El-BadawiCentral Laboratory for Aquaculture Research, Abbassa, Abo-Hammad, Sharkia,
Egypt.
2- Biological Department,University College,Umm Al-Qura University,Kingdom of
Saudi Arabia.Alkhateib GaafarHydrobiology Department, National Research Centre, Dokki 12622, Giza, Egypt.Hossam AbbasHydrobiology Department, National Research Centre, Dokki 12622, Giza, Egypt.Mohammad AuthmanHydrobiology Department, National Research Centre, Dokki 12622, Giza, Egypt.Journal Article20170404The aim of the current investigation was to evaluate whether neem (Azadirachta indica) seeds oil (NO) induced changes on some oxidative indicators and histopathological alterations in tissues of Oreochromis niloticus fish and the possible<br />protective effects of copper nicotinate (CN) and vitamin E on neem oil-induced changes. Fish were divided into 8 groups and treated with NO alone or in combination with CN, vitamin E and clean water. NO interfered with the antioxidant defense system of O. niloticus, as there was a decrease in GST, CAT and SOD activities in all studied organs as compared to control group. These alterations in antioxidantsactivities were accompanied with the occurrence of histological lesions and damage in gills, liver and posterior kidney tissues. The addition of CN and Vitamin E in fish<br />diets could protect the fish O. nilotcus against NO-induced oxidative damage and histopathological changes showing recovery of fish organs. It was concluded that although botanical pesticides are being considered as less toxic/safe, but it may provoke deleterious changes in vital organs of the fish. Hence, precautions must be taken into account when botanicals are being used in fish production facilities. The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613118320140901Use of hematological and biochemical parameters and histological changes to assess the toxicity of drumstick tree (Moringa oleifera) seeds extract on Tilapia (Oreochromis niloticus) fish2140221510.21608/ejabf.2014.2215ENHossam AbbasDepartment of Hydrobiology, Veterinary research Division, National research
Centre, Egypt.Ashraf El-BadawiEcology Department, Central Lab. For Aquaculture Research, ARC, Egypt.Journal Article20170404Nowadays Moringa oleifera (M. oleifera), family Moringaceae, is considered an important food source for human in many parts of the world, and as antiviral, antibacterial, sex reversal in tilapia fish and immunostimulant agent in fishes. This<br />study was conducted to investigate the effect of acute and chronic exposure of Moringa oleifera seeds extract on some hematological, biochemical variables and histopathological changes of tilapia fish species Oreochromis niloticus. The 96 h LC50 value of M. oleifera seeds extract to the studied fish was 138 mg/L. For acute study,the same concentration of 96 h LC50 (138 mg/L) was used while for chronic exposure,1/10 of 96 h LC50 value (13.8 mg/L) was taken. At the end of acute and chronic exposure, hematological parameters like red blood cell count (RBCs), hemoglobin(Hb), hematocrit (Hct), and mean corpuscular hemoglobin concentration (MCHC) were significantly (P<0.05) decreased in fish exposed to seeds extract. However a significant (P<0.05) increase in white blood cell count (WBCs), mean corpuscular<br />volume (MCV) and mean corpuscular hemoglobin (MCH) values were observed in the exposed fish during above treatment period when compared to that of the control groups. Biochemical parameters such as glucose showed a significant decrease in acute exposure while increased significantly in chronic exposure (P<0.05). The obtained results showed a significant decrease in total protein and plasma cholesterol levels in fish exposed to acute and chronic concentrations of seeds extract while a significant (P<0.05) increase in aspartate aminotransferase (AST), alanine<br />aminotransferase (ALT), creatinine, uric acid and alkaline phosphatase (ALP) activity was observed. Chemical muscle composition in fishes exposed to chronic exposure showed a significant increase in muscle water content and ash content while showing a significant decrease in muscle total lipids and total protein. The studied growth<br />indices showed a significant decrease in body weight gain (BWG), specific growth rate (SGR) and hepatosomatic index (HSI). Histopathlogical sections showed pathological changing in gills, liver, kidney and spleen and the obtained results were discussed. This study could provide valuable information about the toxicity of M.oleifera seeds extract to Oreochromis niloticus. especially with the wide spread of using in the field of aquaculture and to establish safer limit in water purification. The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613118320140901Some fishery aspects of Nile tilapia, Oreochromis niloticus at Rosetta Branch of the Nile River, Egypt4151221710.21608/ejabf.2014.2217ENEl-Azab El-BokhtyNational Institute of Oceanography and Fisheries, EgyptA. El-FarNational Institute of Oceanography and Fisheries, EgyptJournal Article20170404Cichlid fish species dominating in Rosetta Branch of the River Nile were studied.<br />They were collected from the commercial catches of widespread used trammel nets during<br />2008-2009. Analysis of the species composition revealed that Oreochromis niloticus<br />dominated the tilapia catch followed by Oreochromis aureus and Tilapia zillii. The lengthfrequency<br />of the dominated O. niloticus varied between 11 and 27 cm total length and its<br />length weight relationship was W = 0.023966 L2.92209. The selection range as deduced<br />from the probability of capture varied according to the mesh size used of the inner layer of<br />the net The selection factor corresponding to the compared two different mesh sized nets,<br />that widely used, was also estimated. The results indicated that the mean selection length<br />should be increased to reach at least 15cm by increasing the mesh size of the inner layer of<br />trammel nets to 60 mm stretched mesh or 30 mm mesh bar. This will lead to increasing<br />the average weight of O. niloticus to 65 gm. These basic data may be helpful in<br />understanding the mesh selectivity and fishery management of the Nile tilapia.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613118320140901Effect of exploitation of fish ponds in the cultivation of wheat in the winter season on growth performance and total yield of Oreochromis niloticus.5366221810.21608/ejabf.2014.2218ENAhmed Fath El-BabCentral Laboratory for Aquaculture Research at Abbassa, Agriculture Research CenterMohamed MostafaCentral Laboratory for Aquaculture Research at Abbassa, Agriculture Research CenterAmal HassanCentral Laboratory for Aquaculture Research at Abbassa, Agriculture Research Center.Journal Article20170404This study aimed to illustrate healthy and profitable alternative culture method for Oreochromis niloticus with wheat. Six earthen ponds (4200 m²) were used in this study. Fish farming has been two successive seasons separated by cultivating wheat in the winter period. Fish farming of O. niloticus in the first season was in the period 15/5/2012 until 21/10/2012 followed cultivating wheat in the period 5/11/2012 until 10/05/2013 followed farming O. niloticus in the period from 21/15/2013 until 27/10 /2013. O. niloticus fish were exposed to three treatments (Two replicates for each<br />treatment). The first treatment fish were fed on artificial feed 25% crude protein only, in the second treatment fish were fed on artificial feed 25% crude protein with inorganic fertilization and in the third treatment fish were fed on artificial feed 25% crude protein with organic fertilization. The wheat was cultured without fertilization. O. niloticus<br />fingerlings averaging 30.07g for first year and 30.83g for second year were assigned randomly (12000 fingerlings/ feddan). Results obtained can be summarized as follows: Season of aquaculture: the first season recorded the highest ranges of body weight (BW), body length (BL), condition factor (K), daily weight gain (DWG) and<br />specific growth rate (SGR).<br />Treatments: treatment3 recorded the highest ranges of body weight (BW), body<br />length (BL), condition factor (K), daily weight gain (DWG) and specific growth rate<br />(SGR).<br />Wheat culture: third tratment recorded the highest ranges of total weight of<br />Wheat crop.<br />Based on results obtained in this study and on the economical evaluation, it could<br />be concluded that, wheat can grow in the fish ponds during the winter season, taking<br />into account feeding O. niloticus on a artificial feeding contain 25% crude protein in<br />addition to organic fertilization using chicken manure also add organic fertilization to<br />increase the weights of fish as well as increasing wheat crop of fish ponds, in addition to<br />that it was the best in terms of economic efficiency compared with other treatments.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613118320140901The effect of using some natural growth promoters on growth performance and feed utilization of monosex Nile tilapia (Oreochromis niloticus), fingerlings6778221910.21608/ejabf.2014.2219ENNabil Abdel-HakimDepartment of Animal Production, Faculty of Agriculture, Al-Azhar University, EgyptMohamed LashinDepartment of Animal Production, Faculty of Agriculture, Al-Azhar University, EgyptAl-Desoki Al-AzabDepartment of Animal Production, Faculty of Agriculture, Al-Azhar University, EgyptAshraf GodaAquaculture Division, National Institute of Oceanography and Fisheries (NIOF), EgyptHani NazmiAquaculture Division, National Institute of Oceanography and Fisheries (NIOF), EgyptJournal Article20170404An experimental study was conducted to evaluate the effect of three different natural growth promoters as feed additives on growth performance of monosex Nile tilapia fingerlings. Three nutritional treatments were applied at two additive levels (0.15 & 0.3 %) of Paprika (Hot Red Pepper “Capsicum annuum” meal), Proplis (Bee Glue) and Humapol-FIS Substance (Humic & Fulvic acids with Mixture of Minerals) each one in addition to Control diet. The tested treatments were conducted in two cement ponds (8×4×1 m), divided with nets to 16 equal aquatic compartments (2×2×1<br />m); 14 of them were used and stocked randomly with 20 fish/each one with an average initial body weight of 23.62 ± 0.13 g. The experiment lasted for 20 weeks (Six feeding days/week with the feeding rate at 3% of live body weight/day). The results at the end of the experiment showedthat, growth performance and feed conversion ratio were significantly (P< 0.05) improved for monosex tilapia fingerlings fed on diets with the aforementioned natural feed additives compared to fish fed on the control diet. Feed cost required to produce 1kg weight gain compared<br />to fish fed on the control diet was reduced by using the feed additives. These results revealed that using Proplis (P) at a dietary additive level of 0.3 % was the best treatment in terms of growth performance and feed utilization, while the highest revenue and the best economic evaluation were obtained from the Paprika (K) diet at a level of 0.3 % compared to the control diet.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613118320140901Evaluation of Oreochromis niloticus and Tilapia zillii fisheries at Aswan region,River Nile, Egypt7989222010.21608/ejabf.2014.2220ENEl-Azab El-BokhtyNational Institute of Oceanography and Fisheries, EgyptAlaa El-FarFish Biology Laboratory,
National Institute of Oceanography and Fisheries, EgyptJournal Article20170404Cichlid fish species dominating River Nile at Aswan region (namely Oreochromis niloticus and Tilapia zillii) were collected from the widespread used trammel nets. Analysis of the length-frequency using (FiSAT) computer program revealed that, the estimated the Von Bertalanffy's growth parameters were L∞ = 25.73 cm (asymptotic length); k = 0.73 year -1 for O. niloticus and L∞ = 19.43 cm ; k = 1.4 year -1 for Tilapia zillii . The instantaneous total mortality rate of O. niloticus was 3.64 and 5.60 year -1 for T. zillii. The estimated natural mortality rate was 1.44 for O. niloticus and 2.38 year -1<br />for the second species. The respective fishing mortality rates were 2.2 and 3.22 year -1, while their estimated exploitation rates were 0.60 and 0.57 year-1. The results indicated that, O. niloticus and T. zillii fisheries are overexploited. Therefore, it is recommended to decrease the fishing effort in the area of study and increase the mesh size of the inner layer of trammel nets to at least 3 cm mesh bar to secure profitable fisheries and optimum catch for the future. The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613118320140901Possible effects of feeding fish the dried-treated sewage on bioaccumulation of metals, morphological lesions and mortality rate91104222110.21608/ejabf.2014.2221ENAbdelhamid AbdelhamidDepartment of Animal Production, Faculty of Agriculture, Al-Mansoura University, Egypt.Ahmed MehrimDepartment of Animal Production, Faculty of Agriculture, Al-Mansoura University, Egypt.Moustafa AlkatanDepartment of Animal Production, Faculty of Agriculture, Al-Mansoura University, Egypt.Journal Article20170404A feeding field experiment was conducted for 102 days, using a polyculture system (Nile tilapia, silver carp, common carp, and African catfish at a rate 1: 1: 1: 1) in two Hapas, one for control fish fed a commercial diet and the second one fish were fed on a dried sewage sludge (DSS). The control diet, DSS, fish body and muscles<br />were analyzed for metals contents. Throughout the experimental period, any symptoms and death cases were recorded. From the obtained results, it was clear that DSS contained very high percentage of ash and very low percentages of ether extract (EE) and total carbohydrate percentages comparing with the diet of the control group.<br />It was found that DSS contains higher levels of P, Cu, Pb, and Cd than the commercial control diet. The P and Cd levels were higher in DSS fed fish than the control ones, regardless of the fish species. However, catfish body contained the<br />highest level of P and Cu but silver carp body contained the highest Pb and Cd levels.<br />The interaction effect (dietary treatment × fish species) was significant, except for Cu.The control fish muscles presented higher contents of Cu, Pb, and Cd, but the opposite was true for P, where the DSS fed fish contained significantly higher level of P in their muscles than the control fish, silver carp contained significantly higher Cu and Cd and tilapia contained the highest level of Pb in the muscles comparing with the other fish species, regardless of the dietary treatment. The interaction effect was significant. Fish fed on DSS were darker with friable livers comparing with the control fish. Concerning mortality rate, when the fish were fed on the DSS, silver and common carps were more tolerant than the Nile tilapia and catfish. Therefore, it is recommended to give more concern on food and water quality (environmental<br />friendly) used in aquaculture to offer safe products for human consumption.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613118320140901Effect of monsoon on zooplankton variations and environmental characteristics in a tropical fish pond at Aligarh, India105114222210.21608/ejabf.2014.2222ENHesham Abdel MolaNational Institute of oceanography and fisheries, 101 Kasr El-Einy st., Cairo,
Egypt.Saltanat ParveenLimnology Lab, Department of Zoology, Aligarh Muslim University, IndiaJournal Article20170404The phsico-chemical parameters and zooplankton abundance were analyzed monthly in Lal Diggi pond at Aligarh, India during the period from October, 2010 to August, 2011. High variations of zooplankton and water quality were observed in the pond. Thirty nine species were identified belonging to Copepoda (3 species), Rotifera (27 species), Cladocera (6 species) and Protozoa (3 species). Copepoda formed the highest percentage of zooplankton (66.65 %), followed by Cladocera (14.93 %), Rotifera (9.61 %) and Ostracoda (8.61 %), while Nematoda and Protozoa formed the lowest dominant groups being 0.15 % and 0.05 % respectively. The principal component analysis was conducted to clear the<br />correlation between zooplankton and the environmental factors. Due to the disturbance effect on the pond, the biotic indices recorded a relatively decrease during monsoon in June and July and start to increase during<br />August. The authors suggested that, using the pond for fish culture,especially, after monsoon for six months (from October to March) because it has the best water quality and zooplankton productivity during this period.