WorldFish Repository: Recent submissions
Now showing items 1201-1220 of 5196
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Impact of Saturn herbicide on histological structures and residual aspects of Nile tilapia (Oreachromis niloticus)
(2008)Type: Journal ArticleThis investigation was performed to demonstrate the effect of Saturn herbicide on Nile tilapia (Oreachromis niloticus). Experimental studies were done to determine of LC50 of Saturn and evaluate its acute and chronic ... -
Effect of nitrogen fertilizer source on water quality and performance of two tilapia species
(2006)Type: Journal ArticleThe purpose of the present study was to compare the effect of urea and calcium nitrate (c. nitrate) as nitrogen fertilizer sources with mono superphosphate (msp) on water quality and the performance of two species of tilapia ... -
Inclusion of fermented fish by-product silage in diets of the Nile tilapia, Oreochromis niloticus
(2016)Type: Journal ArticleThe aim of this study was to evaluate the possibility of replacing of fish meal by silage made from fish by-product on growth performance, feed utilization and proximate composition of the Nile tilapia, O. niloticus fingerlings. -
Estimates of phenotypic and genetic parameters for carcass traits in Nile Tilapia selected for fast growth in low-input conditions
(2005)Type: OtherNile tilapia is sold as either un-gutted or gutted whole carcasses, or as depending on geographical location. In whichever state the is sold, meat yield is an important consideration. Although carcass traits are of economic ... -
Effect of using periphyton substrate (Bamboo stems) on water quality, phytoplankton, zooplankton, periphyton and growth performance for tilapia, mullet and catfish in earthen ponds
(2012)Type: Journal ArticleThis experiment shows that the bamboo substrate improved water quality, survival rate and total production of fish. -
Use of alternative sources for enhancing production in Egyptian fish farms
(2010)Type: ThesisThe present study was designed to investigate the advantages and disadvantages of using different organic fertilizers on fish safety and yield and also to investigate the production performance of mixed organic and inorganic ... -
Estimation of Some Chemical Parameters of River Nile Sediments Exposed to Fish Cages
(2006)Type: Journal ArticleThe aim of this study was to assess the environmental impact of cage farm for ongrowing fish (Oreochromis niloticus) on the river sediments beneath and adjacent to the cages in El-Bostan region, Damietta Governorate by ... -
The role of fish ponds in the nutrient dynamics of mixed farming systems
(2006)Type: ThesisThe major objective of the study, is to explore the use of ponds as nutrient traps (besides fish production) to increase nutrient use efficiency in integrated farming systems. It focuses on (i) nutrient utilization efficiency ... -
The assessment of mycotic settlement of freshwater fishes in Egypt
(2008)Type: Conference PaperThe objectives of this study are to determine the types of fungal pathogens affecting freshwater fish especially those causing high mortality rates, elucidate the incidence and distribution of such pathogens in Oreochromis ... -
Selection for growth of Nile tilapia (Oreochromis niloticus L.) in low-input environments
(2006)Type: ThesisThis thesis is a part of Wageningen University’s Interdisciplinary Research and Education Fund project entitled “Optimization of nutrient dynamics and fish for integrated agriculture- aquaculture systems” (INREF-POND). The ... -
Enhancing fish farm productivity through improved management. A case study in Egypt
(2000)Type: Conference PaperDuring a 3-week training program held during 1999 on field application for fish culture technology in Egypt, it was noticed that a significant enhancement in pond productivity could be achieved mainly through improved pond ... -
Review of tropical reservoirs and their fisheries: The cases of Lake Nasser, Lake Volta and Indo Gangetic Basin reservoir
(2011)Type: ReportFreshwaters contribute 15 percent of the world's reported fish catch, or about 10.1 million tonnes in 2006, most of which comes from tropical systems. The true contribution of tropical inland fisheries is likely to be ... -
Biological control of the cyanobacterium Microcystis aeruginosa using Chlorella and Scenedesmus mass culture
(2006)Type: Conference PaperThis study aimed to investigate the use of Chlorophyta Chlorella elliposoides and Scenedesmus bijuga (Turpin) Lageh as a biological control means against Microcystis aeruginosa Kutz as a laboratory trial before field application. -
Growth performance, feed utilization and gonad development of diploid and triploid Nile tilapia, Oreochromis niloticus
(2017)Type: Journal ArticleA 16 week experiment was conducted to evaluate growth performances, gonads development, carcass and proximateanalysis of diploid and triploid Nile tilapia, Oreochromis niloticus. -
Value chain analysis of the Egyptian aquaculture sector
(2012)Type: Conference PaperEgypt’s aquaculture production (921,585 tonnes in 2010) is by far the largest of any African country and places it 11th in terms of global production. Despite the fact that the aquaculture sector in Egypt is now a mature ... -
Effect of Photoperiod, Dietary Protein and Temperature on Reproduction in Nile Tilapia (Oreochromis niloticus)
(2000)Type: Conference PaperPhotoperiod, crude protein level and water temperature were studied for their effects on reproductive performance and egg hatchability in Nile tilapia (Oreochromis niloticus). -
Production of genetically improved organic Nile tilapia
(2008)Type: Journal ArticleDemand for organic products for human consumption has been on the increase due to the belief that organic products are safer and healthier to the consumer and the environment. In developing countries, Nile tilapia (Oreochromis ... -
Reproductive and patho-physiological responses of blue tilapia (Oreochromis aureus) exposed to chromium with or without chelating substances
(2006)Type: Journal ArticleWater pollution with chromium included significant negative impact in the hematological and biochemical parameters together with marked histopathological alteration and lowering reproductive performance of fish. The addition ... -
Economic impacts of ponds management on water quality and growth performance of fish in polyculture
(2016)Type: Journal ArticleThe present study was conducted to evaluate the economics of the fish farms management under different systems and different water sources and its impact on the growth performance of fish in polyculture. -
Assessment of immune response supplemental immunoton and bovine lactoferrin as alternatives to antibiotics in nile tilapia (Oreochromis niloticus)
(2013)Type: Journal ArticleAn experiment was conducted to two different immunostimulants were investigated to detect changes in the activity of innate non-specific immune response, disease resistance and growth performance as alternatives to antibiotics ...