Department of Fisheries and Natural Resources: Recent submissions
Now showing items 81-100 of 110
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Effects of chicken manure extract on the population growth, mixis induction and body size of the freshwater rotifer Brachionus angularis Gosse 1851
(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, ... -
Aquaculture: a promising solution for food insecurity, poverty and malnutrition in Kenya
(AFRICAN SCHOLARLY SCIENCE COMMUNICATIONS TRUST (ASSCAT), 2016)Food insecurity remains one of the most visible dimensions of poverty. The increasing population amid competition for land and water resources means that the global demand for food will continue to increase. In Kenya, the ... -
Effect of replacing marine protein with hydrolyzed feather meal on growth, apparent digestibility and body composition of juvenile tilapias; Oreochromis mossambicus (peters, 1852)
(KENYA MARINE AND FISHERIES RESEARCH INSTITUTE, 2017)The effects of substituting hydrolyzed feather meal for fresh water shrimp meal on growth, apparent digestibility and body composition in tilapia Oreochromis mossambicus were evaluated under laboratory condition. Five ... -
Substitution of fish meal with sunflower seed meal in diets for Nile tilapia (Oreochromis niloticus L.) reared in earthen ponds
(Taylor & Francis, 2017-01-02)This study investigated sunflower seed meal (SSM) as dietary protein replacement of fish meal (FM) for Nile tilapia (Oreochromis niloticus) juveniles (initial mean weight of 19.8 ± 6.3 g) reared in earthen ponds for 210 ... -
Effect of starvation and accumulation of generations on mixis induction in offspring of the monogonont rotifer Brachionus manjavacas hatched from resting eggs
(Springer International Publishing, 2017-07-01)The effect of starvation on sexual reproduction in cyclic parthenogenetic rotifers has been studied using life history experiment. Short-time starvation of rotifers that experienced starvation immediately after hatching ... -
Culturing Brachionus rotundiformis Tschugunoff (Rotifera) using dried foods: application of gamma-aminobutyric acid (GABA)
(Springer International Publishing, 2017-07-01)This study investigated the population growth of the rotifer Brachionus rotundiformis (S-type) in batch cultures using dried Nannochloropsis oculata and Chlorella vulgaris with gamma-aminobutyric acid (GABA) supplementation. ... -
Studies on the development of low-cost and stable live food production technologies for tropical aquaculture: a case study of Rotifera (Family: Brachionidae)
(Nagasaki University's, 2017-09-20)Live food resources e.g. rotifers, copepods, cladocerans and Artemia are critical for successful fish larviculture. However, the hatchery production of these live foods depends on the availability of high density microalgae, ... -
STATE OF CAGE CULTURE IN LAKE VICTORIA, KENYA
(KENYA MARINE AND FISHERIES RESEARCH INSTITUTE, 2018)Fishery development is one of the key global development goals embodied in agenda 2030 under the fourteenth Sustainable Development Goal (SDG), in which countries seek to support the restoration of fish stocks to improve ... -
Effects of Nicotina tobacum (Linnaeus) on the survival and behavioral response of the freshwater leeches, Hirudinaria sp.
(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. ... -
Lifetable demography and population growth of the rotifer Brachionus angularis in Kenya: influence of temperature and food density
(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 ... -
BLENDING FISHWASTES AND CHICKEN MANURE EXTRACT AS A LOW-COST AND STABLE DIET FOR PLANKTONIC LIVE FOOD PRODUCTION
(Ghent University, Belgium, 2017)The global increase of aquaculture has expanded the demand for the zooplankton as live foods for larviculture. Although freshly cultured microalgae is the common diet for zooplankton, microalgal culture protocols are ... -
A SIMPLE AND LOW-COST TECHNIQUE FOR CULTURING ROTIFERA WITHOUT MICROALGAE
(Ghent University, Belgium, 2017)So far, microalgae are the first choice diet for feeding rotifers (Maruyama et al., 1997), thanks to their excellent influence on rotifer growth rate (Hagiwara et al., 1997; Dhert et al., 2001; Yoshimatsu and Hossain, ... -
Composting fishwastes as low-cost and stable diet for culturing Brachionus rotundiformis Tschugunoff (Rotifera): Influence on water quality and microbiota
(Elsevier, 2018-02-03)The demand for the rotifers BRACHIONUS spp., which is considered indispensable for larviculture, has increased considerably in the tropical countries. Although freshly cultured microalga is the common rotifer diet, the ... -
The status of research on Lake Victoria fisheries: Historical and current data on fisheries and the lake environment
(AfricArXiv, 2019-09)Lake Victoria which is the second largest freshwater lake in the world supports a large population living around it through provision of food; fish and employment; both directly and indirectly. Due to its varied uses, human ... -
Effects of aerated and non-aerated biofilters on effluent water treatment from a small-scale recirculating aquaculture system for Nile tilapia (Oreochromis niloticus L.)
(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, ... -
Growth and Nutrient Removal Efficiency of Sweet Wormwood (Artemisia annua) in a Recirculating Aquaculture System for Nile Tilapia (Oreochromis niloticus)
(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
(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), ... -
Culture Trials of Nile Perch Juveniles in Cages and Earthen Ponds
(2019-09)Fish were obtained from Asembo Bay, Dunga, Kendu Bay, Homa Bay and Mbita beaches around Lake Victoria using beach seines (< 10-mm mesh). Fish were sorted by size and stocked into hapa nets, each measuring 3 m× 3 m× 1 m, ... -
A review on the status of some major fish species in Lake Victoria and possible conservation strategies
(Lakes & Reservoirs: Science, Policy and Management for Sustainable Use., 2020-01-09)Lake Victoria, the second largest freshwater lake in the world, supports an enormous flora and fauna biomass, with a large human population around the Lake. The lake is a source of food (fish), water for domestic use and ... -
Earthworm, Eisenia fetida, bedding meal as potential cheap fishmeal replacement ingredient for semi-intensive farming of Nile Tilapia, Oreochromis niloticus
(Aquaculture Research, 2020-02-11)The study amalgamated earthworm and agro-industrial wastes through vermicomposting and then evaluated the potential of the bedding (mixture of Eisenia fetida and vermicompost) to replace fishmeal in semi-intensive farming ...