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Now showing items 31-40 of 67
Control of microcystis aeruginosa using tannic acid
Type: Journal Article
One of the most difficult challenges facing the commercial fish producers is how to keep the constant balance that required maintaining a stable relationship among the water, fish and microscopic flora and fauna in their ...
Genetic and environmental factors affecting growth of Nile tilapia (Oreochromis niloticus) juveniles: Modelling spatial correlations between hapas
Type: Journal Article
The aim of this study was to quantify the environmental and genetic effects on early growth of Nile tilapia, Oreochromis niloticus.
Predicting the water requirement of river fisheries.
Type: Journal Article
This paper is arranged in two parts. The first summarizes technical issues surrounding such assessments, briefly reviews the water requirements of river fish and fisheries, and examines some of the ways for predicting these ...
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 ...
The importance of fisheries for development
Type: Journal Article
Declining fish stocks and degraded aquatic environments are easily overlooked in debates about sustainable development. This issue of id21 insights aims to bring these challenges forward. It examines the problems facing ...
Effect of dietary probiotic Biogen supplementation as a growth promoter on growth performance and feed utilization of Nile tilapia Oreochromis niloticus (L.)
Type: Journal Article
Probiotic microbial feed supplements are gaining wide acceptance in livestock production, and may be applicable to aquaculture production systems. The present study was conducted to examine probiotic treatment in the ...
Survival of Clarias gariepinus fry in earthern ponds: effects of composts and leaks
Type: Journal Article
To inform decisions on improving the yields of African catfish Clarias gariepinus fingerlings in earthen ponds, the hypothesis that composts and leaks were partly responsible for usually low and variable fry survivals was ...
Impact of development and dissemination of Integrated Aquaculture-Agriculture (IAA) Technologies in Malawi
Type: Journal Article
Malawi is a small but densely populated country in Southern Africa. Fish is an important part of the nutrition of Malawians, providing essential protein and micronutrients. However, per capita fish consumption has halved ...
Advanced nursing of Clarias gariepinus (Burchell, 1822) fingerlings in earthen ponds, through recycling of tilapia recruits
Type: Journal Article
In an attempt to improve the stocking size and yield of Clarias gariepinus, small fingerlings (average weight=3 g) of the type usually produced by African hatcheries were stocked together with tilapia (Oreochromis niloticus) ...
Small scale rural aquaculture in Assam, India: a case study
Type: Journal Article
The state of Assam in northeastern India has an excellent sub-tropical climate for the development of fresh water fish culture in a variety of aquatic bodies. Aquaculture not only plays an important role in nutrition but ...