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Now showing items 11-20 of 23
Pathological studies on encysted metacercariae infections among some freshwater fish in Egyptian aquaculture
Type: Conference Paper
Fish may harbor pathogens especially parasitic diseases which interfere with the aquaculture production and could consitiute a zoonotic importance, especially in developing countries. In this study, 200 freshwater fishes ...
Aquaculture genetics research in Egypt
Type: Conference Paper
Fish production in Egypt has significantly increased over the last few years reaching 546 000 t in 1998 compared to 306 000 t in 1988. The contribution of aquaculture in the overall fish production has increased as well ...
Impact of Saturn herbicide on histological structures and residual aspects of Nile tilapia (Oreachromis niloticus)
Type: Journal Article
This 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 ...
Interaction between calcium and some heavy metals in fish ponds that receive different water sources
Type: Journal Article
The current study was carried out to investigate the effect of interaction between calcium and some heavy metals in fish reared in two different water sources (agricultural drainage water and irrigation Nile water).
The role of fish ponds in the nutrient dynamics of mixed farming systems
Type: Thesis
The 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 ...
Laboratory studies for preventing the growth of Microcystis sp. using Chlorella and Sendessmus in the Nile tilapia culture
Type: Conference Paper
This study is a trial for the prevention of Microcystis sp. growth using Chlorella and Scenedesmus mass culture via indoor experiment.
Reproductive and patho-physiological responses of blue tilapia (Oreochromis aureus) exposed to chromium with or without chelating substances
Type: Journal Article
Water 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 ...
Enhancing fish farm productivity through improved management. A case study in Egypt
Type: Conference Paper
During 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 ...
Effect of Photoperiod, Dietary Protein and Temperature on Reproduction in Nile Tilapia (Oreochromis niloticus)
Type: Conference Paper
Photoperiod, crude protein level and water temperature were studied for their effects on reproductive performance and egg hatchability in Nile tilapia (Oreochromis niloticus).
The assessment of mycotic settlement of freshwater fishes in Egypt
Type: Conference Paper
The 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 ...