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Influence of fertilizers' types and stocking density on water quality and growth performance on Nile tilapia African catfish in polyculture system
Type: Conference Paper
The effects of fertilizer types and stocking density were investigated on water quality parameters that expected to affect growth performance of the polyculture of Nile tilapia <i> (Oreochromis niloticus) </i>, African ...
Exploring the trophic structure in organically fertilized and feed-driven tilapia culture environments using multivariate analyses
Type: Journal Article
Reports of similar yields in manure and feed-driven tilapia culture environments raise questions on food utilization in these environments. The possibility that similar production rates are because of utilization of different ...
Production economics of Nile Tilapia (Oreochromis niloticus) pond culture in El-Fayum Governorate, Egypt
Type: Journal Article
Econometric techniques were used to estimate a production function for tilapia pond culture in El-Fayum Governorate, Egypt, utilizing cross-sectional field data. Explanatory variables were feed, initial stocking weight, ...
Total replacement of fishmeal with soybean meal in diets for Nile tilapia in pre-fertilized ponds
Type: Conference Paper
This study was conducted to investigate the effect of replacing fishmeal with soybean meal in diets with different levels of dietary protein on the production economics of Nile tilapia. The results demonstrate that soybean ...
Efficiency of African catfish Clarias gariepinus in controlling unwanted reproduction of Nile tilapia Oreochromis niloticus in low input production system
Type: Journal Article
The present experiment was conducted in twelve earthen ponds 2100-m2 at WorldFish Center research facility at Abbassa, Egypt, to assess the efficiency of African catfish (Clarias gariepinus) in controlling unwanted Nile ...
Rhizons improved estimation of nutrient losses because of seepage in aquaculture ponds
Type: Journal Article
Seepage represents one of the largest water losses in static ponds accounting for about 30-70% of total pond water losses. This short communication describes a novel method in which a similar principle as in Masuda and ...
Effect of varying density and water level on the spawning response of African catfish Clarias gariepinus: Implications for seed production
Type: Journal Article
The development of a reliable methodology for spawning of African catfish, Clarias gariepinus without the use of hormone injections would greatly improve the prospects of aquaculture in Africa. Earlier work has shown that ...
Roles of ponds in integrated agriculture-aquaculture systems
Type: Book Chapter
The effects of adding an aquaculture pond to existing farming operations on nutrient use efficiency and productivity were explored. Ponds can be used to cycle nutrients from agricultural by-products such as manures and ...