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Now showing items 20-39 of 54

Effects of aerated and non-aerated biofilters on effluent water treatment from a small-scale recirculating aquaculture system for Nile tilapia (Oreochromis niloticus L.)

Zipporah Gichana, David Liti, Silke-Silvia Drexler, Werner Zollitsch, Paul Meulenbroek, Joseph Wakibia, Erick Ogello, Peter Akoll, Herwig Waidbacher (Sciendo, 2020-04-21)

Most recirculation aquaculture systems (RAS) use aerated biofilters to maintain suitable water quality for fish production. However, application of non-aerated biofilters may provide opportunities to lower aeration costs, ...
Effects of chicken manure extract on the population growth, mixis induction and body size of the freshwater rotifer Brachionus angularis Gosse 1851

Erick Ochieng Ogello, Atsushi Hagiwara (Asian Fisheries Society, 2015-12-31)

This study investigated the effects of chicken manure extract (CME) on the population growth, mixis induction and body size of the freshwater rotifer Brachionus angularis Gosse 1851. Four concentrations of CME (i.e.0.5, ...
The effects of dietary levels of protein and greenhouse on growth, behaviour and fecundity of Nile tilapia (Oreochromis niloticus L.) Broodstock

S Musal, Paul Sagwe Orina, Christopher Mulanda Aura, Rodrick Kundu, Erick Ochieng Ogello, Jonathan Mbonge Munguti (Kenya Marine and Fisheries Research Institute, Kegati Aquaculture Research Station, 2012)

The aim of the study was to assess the main and interactive effects of greenhouse and dietary crude protein levels on growth, behavior and fecundity of Nile tilapia at Kegati aquaculture research station, Kisii, Kenya ...
Effects of Nicotina tobacum (Linnaeus) on the survival and behavioral response of the freshwater leeches, Hirudinaria sp.

Erick Ochieng Ogello, Elija Migiro Kembenya, Kevin Odhiambo Obiero, Jonathan Mbonge Munguti (2016-01-01)

We investigated the efficacy of Nicotina tobacum as an anti-parasitic chemical to freshwater leeches of the genus Hirudinea, by assessing their behavioral and survival responses to different concentrations and ages of N. ...
Effects of pure and crude papain on the utilization and digestibility of diets containing hydrolysed feather meal by Nile tilapia (Oreochromis niloticus L.)

Jonathan Mbonge Munguti, Erick Ochieng Ogello, David Liti, Herwig Waidbacher, Michael Straif, Werner Zollitsch (KENYA MARINE AND FISHERIES RESEARCH INSTITUTE, 2014)

This study was conducted to evaluate the effects of pure and crude papain on the digestibility and utilization of diets containing hydrolysed feather meal (HFM) by Nile tilapia (Oreochromis niloticus L.) under indoor and ...
Efficiency of pumpkin (Cucurbita pepo), sweet wormwood (Artemisia annua) and amaranth (Amaranthus dubius) in removing nutrients from a smallscale recirculating aquaponic system

Gichana, Zipporah; Liti, David; Wakibia, Joseph; Ogello, Erick; Drexler, Silke; Meulenbroek, Paul; Ondiba, Robert; Zollitsch, Werner; Waidbacher, Herwig 2019 (Aquaculture International, 2019-08-28)

In aquaponic systems, plants absorb dissolved nutrients from aquaculture wastewater for their growth. The removal of nutrients allows reuse of water and minimises wastewater discharge to the surrounding environment. This ...
Evaluation of the associative effects of mixing Kenyan tree browse foliages and yeast supplementation on digestion in ruminants

Wambui, Caroline C (2012)
FISH-RESTOCKING OF LAKES IN KENYA: SHOULD SOLEMNLY BE AN ENVIRONMENTAL ISSUE

Aura Mulanda Christopher, Safina Musa, Murithi Njiru, Erick Ochieng Ogello, Rodrick Kundu (Nova Science Publishers, Inc., 2012)

The self-described “social-ecologist”, Peter Drucker, said that what gets measured gets managed; a statement that could have welcomed political and social concepts into environmental matters. A case in point is the fish ...
Genetic differentiation of Artemia franciscana (Kellogg, 1906) in Kenyan coastal saltworks

Erick Ochieng Ogello, Betty M Nyonje and Gilbert Van Stappen (UGent) (Kenya Marine and Fisheries Research Institute, Kegati Aquaculture Research Station, 2014)

The nature of genetic divergence between the Artemia population native to San Francisco Bay, (SFB) USA and those from the introductions of SFB material in the Kenyan coast two decades ago were investigated using the ...
Genetic differentiation of Artemia franciscana (Kellogg, 1906) in Kenyan coastal saltworks

Erick Ochieng Ogello (Gent University, Belgium, 2013)

The nature of genetic divergence between the Artemia population native to San Francisco Bay, (SFB) USA and those from the introductions of SFB material in the Kenyan coast (Fundisha and Kensalt) 2 decades ago were ...
Growth and Nutrient Removal Efficiency of Sweet Wormwood (Artemisia annua) in a Recirculating Aquaculture System for Nile Tilapia (Oreochromis niloticus)

Zipporah Gichana, Paul Meulenbroek, Erick Ogello, Silke Drexler, Werner Zollitsch, David Liti, Peter Akoll, Herwig Waidbacher (Multidisciplinary Digital Publishing Institute, 2019-05)

The maintenance of optimal water quality for fish production is one of the major challenges in aquaculture. Aquaponic systems can improve the quality of water for fish by removing the undesirable wastes and in turn produce ...
Growth response of rotifers on a bacterial-based diet made from fishwastes

S Wullur, EL Ginting, V Waraow, IFM Rumengan, EO Ogello, A Hagiwara (IOP Publishing, 2019-07)

Fishwastes are potential low-cost diet sources for replacing microalgae, which is the popular diet for rotifers. Growth responses of rotifer were tested under different weights of the diet (i.e. 0.05, 0.1, 0.2 and 0.4 g/L), ...
Growth Response, Survival and Profitability of Nile Tilapia (Oreochromis niloticus) Fed at Different Feeding Frequencies in Fertilized Earthen Ponds

Mary A Opiyo, Jonathan Mbonge Munguti, Erick Ochieng Ogello, Harrison Charo-Karisa (Kenya Marine and Fisheries Research Institute, National Aquaculture Research Development and Training Center,, 2014)

Nile tilapia (Oreochromis niloticus) fingerlings were reared in earthen ponds at three different feeding frequencies; twice daily, twice after 1 day, and twice after 2 days for a period of 7 months. Three hundred and ...
Haematological response of African Catfish (Clarias gariepinus Burchell 1822) fingerlings exposed to different concentrations of tobacco (Nicotiana tobaccum) leaf dust

Safina M Musa, Christopher Mulanda Aura, Erick Ochieng Ogello, Reuben Omondi, Harrison Charo-Karisa, Jonathan Mbonge Munguti (Hindawi, 2013)

The present study set out to investigate the haematological effects of tobacco leaf dust on African catfish, Clarias gariepinus, fingerlings, with a mean weight of 3.01 ± 1.25 g using “static renewal bioassay system” ...
In vitro assessment of ruminal fermentation characteristics of tropical browse mixtures supplemented with yeast

Wambui, Caroline C; Ando, Sada; Osuga, , Isaac M; Abdulrazak, Shaukat; Ichinohe, Toshiyoshi (Blackwell Publishing Ltd, 2012-03-01)

An in vitro ruminal gas production study was conducted to assess the effect of yeast supplementation on rumen fermentation of tanniniferous tropical browse mixtures prepared by mixing Berchemia discolor with Acacia ...
In vitro organic matter disappearance of tanniferous browse using rumen liquid from goats ingesting grass versus browse

Wambui, Caroline C; Githiori, John; Lamber, Barry (Taylor & Francis, 2013-12-01)

In vitro organic matter disappearance (IVOMD) of African browse species often indicates artificially low nutritive value due to the presence of condensed tannins (CT). Diet of the rumen liquor donor may change this if ...
Lake Victoria and the common property debate: Is the tragedy of the commons a threat to its future?

OGELLO Erick Ochieng, OBIERO Kevin, MUNGUTI Jonathan Mbonge (Romanian Limnogeographical Association, 2013-12-15)

Lake Victoria is the largest among the African Great Lakes in East African region that are believed to have both dynamic and fragile aquatic ecosystems. Within two decades, the lake has experienced extensive resource ...
Lifetable demography and population growth of the rotifer Brachionus angularis in Kenya: influence of temperature and food density

Erick Ochieng Ogello, Hee-Jin Kim, Koushirou Suga, Atsushi Hagiwara (Taylor & Francis, 2016-08-19)

Lifetable demography and reproductive traits of a Kenyan strain of the rotifer Brachionus angularis were investigated using individual and small batch culture approaches. The rotifer was identified morphologically before ...
Methane emissions from riverine and swampy coastal wetlands: influence of open and macrophyte‐infested areas

Christopher Mulanda Aura, Safina Musa, Erick Ochieng Ogello, Levy Michael Otwoma, Wainaina Miriam, Rodrick Kundu (Blackwell Publishing Ltd, 2011-11)

he atmospheric concentration of methane (CH4) exerts a strong influence on the global climate. Notably, wetlands are important CH4 sources, whose emission represents an ecosystem process depending on such wetland characteristics ...
Nutritive Value and Availability of Commonly Used Feed Ingredients for Farmed Nile Tilapia (Oreochromis Niloticus L.) and African Catfish (Clarias Gariepinus, Burchell) in Kenya, Rwanda and Tanzania

Jonathan Munguti, H Charo-Karisa, MA Opiyo, EO Ogello, E Marijani, L Nzayisenga, D Liti (AJFAND, 2012)

Commonly utilized feed ingredients for culture of Nile tilapia (Oreochromis niloticus) and African catfish (Clarias gariepinus) from Kenya, Tanzania and Rwanda were collected over a period of six months (January - June ...

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