Papers by Rosemary Owigar
International journal of innovative research and development, 2016
Non-commercial Alcoholic production predates history and influence global religious, socio-cultur... more Non-commercial Alcoholic production predates history and influence global religious, socio-cultural and economic realms of life. It largely includes chang’aa in Kenya and accounts for social violence but its effect on pollution and climate change is least explored. The Alcoholic Drinks Control Act, 2010, initiative to manage chang’aa distillation in Kenya had achieved little. This paper posits that the Alcoholic Drinks Control Act, 2010 could help reconcile chang’aa distillation with climate change in Vihiga County, Kenya . Specific objectives to the study were to establish the: pollutants released during chang’aa distillation; relationships between chang’aa distillation and pollution; influence of chang’aa distillation on pollution and; the relationship between chang’aa distillation and enforcement of the Alcoholic Control Act, 2010. A questionnaire and digital camera administered to a sample of 100 snowballed chang’aa distillers provided primary data, complemented with secondary d...
Fish products play an important role in human diet due to peculiar lipid composition. In Kenya La... more Fish products play an important role in human diet due to peculiar lipid composition. In Kenya Lake Victoria is an important source of fresh water fish contributing over 90% of the national fish production. The Lake Victoria fisheries support both the valuable artisanal and commercial fishery. This study aimed at identifying and documenting existing fish processing and preservation technologies practiced along Lake Victoria, Kenya and their adaptability in order to improve food security. Data documented in this study was gathered through open questionnaires, focus group discussions and stakeholders meetings. Demographically it reported that women accounted for over 85% of the fisherfolk of which over 70% had basic level of education. Technologically, sun-drying of fish is the most preferred fish processing method at the landing sites. However, over 97% of the sun-drying operations are done directly on the ground or on top of old fishing nets. The study observed that for new technolo...
the development and implementation of the SYMMACS project. Drs. Emmanuel Njeuhmeli, Delivette
Quality of fish depends on its texture, odour and hinges on duration of harvesting and processing... more Quality of fish depends on its texture, odour and hinges on duration of harvesting and processing. Traditional sun-drying free-to air of Rastrineobola argentia who’s effectiveness and efficiency to reduce moisture content that cut-off microbial ability to grow in this fish is unknown. Thus evaluation of effectiveness and quality of R. argetea processed by sun-drying along the shores of Lake Victoria, Kenya was done. Random and purposive study designs were adapted while convinient sampling upheld for beaches and markets. A total of 130 samples each comprising of 500g tin(s) of approximately 100 - l50g of R. argentea were purchased as wet (0h), semi-dry (3h) or dry(8-10h). Conventional microbiological methods were used to determine presence of E. coli, Salmonella, Klebsiella, Clostridium, Staphylococcus, mould and yeast and their antimicrobial profile. ANOVA was used to determine statistical significance. Mean Aerobic Plate Count of sun-dried R. argentiae in markets was statistically ...
Food and Public Health, 2015
Quality of fish depends on its texture, odour and hinges on duration of harvesting and processing... more Quality of fish depends on its texture, odour and hinges on duration of harvesting and processing. Traditional sun-drying free-to air of Rastrineobola argentia who's effectiveness and efficiency to reduce moisture content that cut-off microbial ability to grow in this fish is unknown. Thus evaluation of effectiveness and quality of R. argetea processed by sun-drying along the shores of Lake Victoria, Kenya was done. Random and purposive study designs were adapted while convinient sampling upheld for beaches and markets. A total of 130 samples each comprising of 500g tin(s) of approximately 100 - l50g of R. argentea were purchased as wet (0h), semi-dry (3h) or dry(8-10h). Conventional microbiological methods were used to determine presence of E. coli, Salmonella, Klebsiella, Clostridium, Staphylococcus, mould and yeast and their antimicrobial profile. ANOVA was used to determine statistical significance. Mean Aerobic Plate Count of sun-dried R. argentiae in markets was statistica...
Open Journal of Ecology
Lake Victoria the second largest fresh water body in the world located in East Africa is a shared... more Lake Victoria the second largest fresh water body in the world located in East Africa is a shared resource between Kenya, Tanzania and Uganda and enjoys a wide range of streams and rivers from as far as Burundi and Rwanda. The lake has environmentally undergone physical, chemical and biological changes in the last four decades, particularly rise in its trophic condition and decline in oxygen level, which affects the water quality and fish population dynamics. This study therefore set out to determine the quality of water in selected fishing beaches of Lake Victoria, Kenya with a view to report the possible pollution levels. pH was highest at Nyamasari and Kotieno (9.3 ± 0.1) and lowest at Nyachebe and Kichinjio (7.08 ± 0.1) whereas temperature was highest at Nyamasari (29.5˚C ± 0.0˚C) and lowest at Kichinjio (23.4˚C ± 0.2˚C). DO was highest at Kotieno (10.3 ± 0.2 mgL) and lowest at Seka (2.4 ± 0.1 mgL). Turbidity was highest at Uyoga (125.5 ± 0.90 NTU) and lowest at Osieko (2.7 ± 0.1 NTU). Ammoniacal nitrogen was highest at Dunga (1278.3 ± 0.8 μg•l −1) and lowest at Nyamasari (12.4 ± 0.8), all a factor of human activities, lake substratum and effluents from rivers and surface runoff. All parameters assessed showed significant differences across sampling sites and depth except pH which did not vary significantly with distance from lakeshore. Further, all parameters did not show a clear pattern with respect to distance from the lakeshore possibly due to adequate mixing in the gulf. There is a need for further water quality monitoring by seasons to inform policy decisions towards sustainable lake exploitation.
Open Journal of Ecology
Lake Victoria the second largest fresh water body in the world located in East Africa is a shared... more Lake Victoria the second largest fresh water body in the world located in East Africa is a shared resource between Kenya, Tanzania and Uganda and enjoys a wide range of streams and rivers from as far as Burundi and Rwanda. The lake has environmentally undergone physical, chemical and biological changes in the last four decades, particularly rise in its trophic condition and decline in oxygen level, which affects the water quality and fish population dynamics. This study therefore set out to determine the quality of water in selected fishing beaches of Lake Victoria, Kenya with a view to report the possible pollution levels. pH was highest at Nyamasari and Kotieno (9.3 ± 0.1) and lowest at Nyachebe and Kichinjio (7.08 ± 0.1) whereas temperature was highest at Nyamasari (29.5˚C ± 0.0˚C) and lowest at Kichinjio (23.4˚C ± 0.2˚C). DO was highest at Kotieno (10.3 ± 0.2 mgL) and lowest at Seka (2.4 ± 0.1 mgL). Turbidity was highest at Uyoga (125.5 ± 0.90 NTU) and lowest at Osieko (2.7 ± 0.1 NTU). Ammoniacal nitrogen was highest at Dunga (1278.3 ± 0.8 μg•l −1) and lowest at Nyamasari (12.4 ± 0.8), all a factor of human activities, lake substratum and effluents from rivers and surface runoff. All parameters assessed showed significant differences across sampling sites and depth except pH which did not vary significantly with distance from lakeshore. Further, all parameters did not show a clear pattern with respect to distance from the lakeshore possibly due to adequate mixing in the gulf. There is a need for further water quality monitoring by seasons to inform policy decisions towards sustainable lake exploitation.
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Papers by Rosemary Owigar