Mujibu Nkambo | Makerere University (original) (raw)
Papers by Mujibu Nkambo
CV of My works in recent months
International Journal of Ecosystem, 2015
Seven selected saline crater lakes in Western Uganda were surveyed for Artemia occurrence, salini... more Seven selected saline crater lakes in Western Uganda were surveyed for Artemia occurrence, salinity and ionic rates both in the wet and dry season. The Studied lakes included lakes Katwe, Munyanyange, Nyamunuka, Murumuri, Bunyampaka, Bagusa, and Kikorongo. In the field cyst-like materials along the lake shores and foam suspected to have Artemia cysts from the surface of each of the studied saline Crater Lake were collected in a plastic sample bottle. Presence of cysts was examined using the density separation technique. A zooplankton net of 50µm was used to filter water samples to be used for analysis of presence of Artemia biomass. Water samples for ionic composition analysis were taken from at least three geo-references points on each of the studied lakes. In-situ measurements of salinity were taken at each point of sample collection in each of the studied lakes. In the laboratory, collected water samples were analysed following APHA standard operating procedures. Seasonal differe...
Journal of Advances in Medicine and Medical Research, 2021
Introduction: Malaria remains the world’s leading vector-born cause of mortality and morbidity, a... more Introduction: Malaria remains the world’s leading vector-born cause of mortality and morbidity, and Eastern Uganda contains some of the country’s highest prevalence rates. Though academic societies, such as universities, may be prone to high malaria transmission, the extent of the burden Original Research Article Warsame et al.; JAMMR, 33(10): 1-23, 2021; Article no.JAMMR.67472 2 and risk factors in university communities of Eastern Uganda are poorly understood. The aim in this study was to examine malaria prevalence, preventive strategies, and risk factors, among University communities in Eastern Uganda; to inform targeted malaria eradication efforts in academic settings. Methods: A mixed methods approach was applied. A case study of Islamic University in Uganda (IUIU), located in Eastern Uganda, was selected. A retrospective approach was used to determine malaria prevalence in IUIU from August to December 2019. Stratified random sampling was used to select IUIU community members; ...
Journal of Natural Sciences Research, 2015
Eight alkaline, saline crater lakes in western Uganda were surveyed between 26 th February and 3 ... more Eight alkaline, saline crater lakes in western Uganda were surveyed between 26 th February and 3 rd March, 2014 with an aim of providing information on the physico-chemical features of these less known unique habitats and provide a basis for comparison with similar environments in other parts of the world. Lakes considered for this study included; Katwe, Kikorongo, Murumuli, Nyamunuka, Munyange, Bunyampaka, Bagusa and Maseche. Surface and Bottom measurements of physic-chemical parameters were measured in-situ from at least three geo-referenced points. Water samples for alkalinity, nutrients and detailed ionic analysis were taken from each of the points. In the laboratory, collected water samples were analysed following APHA standard operating procedures. All the studied lakes were alkaline and saline in nature as reported in the previous studies except Lake Kikorongo which was found to be fresh with a salinity of zero in this present study. With the exception of Lake Murumuli which ...
Background: Malaria remains the world’s leading vector-born cause of mortality and morbidity, and... more Background: Malaria remains the world’s leading vector-born cause of mortality and morbidity, and Eastern Uganda contains some of the country’s highest prevalence rates. Though academic societies, such as universities, may be prone to high malaria transmission, the extent of the burden and risk factors in university communities of Eastern Uganda are poorly understood. The aim in this study was to examine malaria prevalence, preventive strategies, and risk factors, among University communities in Eastern Uganda; to inform targeted malaria eradication efforts in academic settings. Methods: A mixed methods approach was applied. A case study of Islamic University in Uganda (IUIU), located in Eastern Uganda, was selected. A retrospective approach was used to determine malaria prevalence in IUIU from August to December 2019. Stratified random sampling was used to select IUIU community members; these were subjected to semi-structured questionnaires and Key informant Interviews (KII) to exa...
Two trial experiments were conducted to assess the performance of a commercial dry feed D in comb... more Two trial experiments were conducted to assess the performance of a commercial dry feed D in combination with de-capsulated Artemia (AD), Moina (FD) and dry feed alone on African catfish larvae Clarias gariepinus for 14 days. The trials were conducted sequentially, separated by two months at the same facility to validate the consistence of the weaning effect of the feed on the growth of catfish larvae. Results showed that the final larval mean total length TL (cm) of larvae weaned using a feed combination AD (Trial 1, 1.50±0.013 1; Trial 2, 1.44±0.011), significantly performed better in both trials than that of larvae weaned on the other two diets, FD (Trial1, 1.37±0.011; Trial 2, 1.3510±0.0091) and D (Trial 1, 1.39±0.0141; Trial 2, 1.3150±0.009). There was no significant difference in the final mean total length of catfish larvae weaned on feed combinations FD and D (P>0.05). Specific growth rate (daily length % increment) ranged between 4.2% and 5.1% in all trials with the high...
International Journal of Fisheries and Aquatic Studies, 2014
Brood stock management experiment was conducted at Kireka fish farm Uganda, to evaluate the fecun... more Brood stock management experiment was conducted at Kireka fish farm Uganda, to evaluate the fecundity and economic performance of three new local commercial feeds for African catfish brood stock development and conditioning. The fish were conditioned in earthen ponds, stocked at 0.5 kg/m 3 for three months before spawning. The feeds were code named N2, B3 and N3 for Kajjansi 35%, Ugachick 35% and Tende Innovative Farm feeds respectively. Results indicated that there was no significant difference in the crude protein composition of all the test diets. Significantly lower lipid contents (2.326%) were noticed in N3. Mean number of eggs per unit brood stock weight differed significantly across all feed treatment (F = 10.179, P= 0.002), with N2 producing the highest N = 57,075± 18,922; B3= 51,477±16,266; N3= 45,375±13,399, generally improved from the baseline of 6,874±1001. Fertilization was significantly different (F=3.695E30, P=0.0001), across all diets (Mean; (N2= 78.13±8.99%; B3= 72....
International Journal of Fisheries and Aquaculture, Sep 30, 2016
Journal of Natural Sciences Research, Sep 1, 2019
Journal of Natural Sciences Research, Sep 1, 2019
Journal of Natural Sciences Research, 2015
International Journal of Ecosystem, 2015
In Uganda fish is a great source of animal dietary protein, however, natural stocks continue to d... more In Uganda fish is a great source of animal dietary protein, however, natural stocks continue to decline. Therefore, aquaculture provides a viable option to bridge the increasing fish supply-demand gap. Accordingly, a study was conducted from March to August 2016 to investigate the effect of stocking density on the growth performance, and survival of Nile tilapia (Oreochromis niloticus) in floating net cages
to contribute to aquaculture production in Uganda. Nile tilapia fingerlings, with an average weight of 4.07 g were stocked in 8 m3 cages at three different stocking densities; 200, 250, and 300 fish/m3, and
fed on a locally formulated commercial feed for 180 days. At the end of the experimental period, results showed that fish stocked at lower densities were heavier than those stocked at higher densities. The
mean final weights of fish were; 150.79±85.71, 127.82±68.43 and 118.73±49.29 g in cages stocked with 200, 250 and 300 fish/m3, respectively. The mean final weight in lower density (200 fish /m3) treatments was significantly higher (P<0.05) than that of higher density (300 fish/m3) treatments. The mean relative condition factor of fish ranged from 1.02 to 1.06, but was not significantly different (P>0.05) among the stocking densities. Survival rate and stocking density were negatively correlated. The best survival rate (94.19%) was obtained in low stocked cages (200 fish/m3) compared to 92.98% in highly stocked cages (300 fish/m3). The results of this study suggest that 200 fish/m3 of a cage, is the best stocking density in terms of fish growth parameters.
Abstract Seven selected saline crater lakes in Western Uganda were surveyed for Artemia occurrenc... more Abstract Seven selected saline crater lakes in Western Uganda were surveyed for Artemia occurrence, salinity and ionic rates both in the wet and dry season. The Studied lakes included lakes Katwe, Munyanyange, Nyamunuka, Murumuri, Bunyampaka, Bagusa, and Kikorongo. In the field cyst-like materials along the lake shores and foam suspected to have Artemia cysts from the surface of each of the studied saline Crater Lake were collected in a plastic sample bottle. Presence of cysts was examined using the density separation technique. A zooplankton net of 50μm was used to filter water samples to be used for analysis of presence of Artemia biomass. Water samples for ionic composition analysis were taken from at least three geo-references points on each of the studied lakes. In-situ measurements of salinity were taken at each point of sample collection in each of the studied lakes. In the laboratory, collected water samples were analysed following APHA standard operating procedures. Seasonal differences in salinities and ionic rates within the studied lakes were tested for significance using a two tailed, paired t test. All the studied lakes had neither Artemia cysts nor biomass at the time of sampling both in the dry and wet season. Both in the dry and wet season, the salinity in all the study lakes was much higher than that of sea water while the ionic rates of Cl-/SO42- , Cl-/Na+ + K+, and Mg2+/Ca2+ in all the study lakes were all less than that of sea water (table 1 & figure 2). The dry season salinity of all the study lakes was found to be significantly higher than the salinity in the wet season (t-value = 0.0205). There were no significant seasonal differences in the ionic rates of Cl-/SO42- , Cl-/Na+ + K+, and Mg2+/Ca2+ in the studied lakes with t-values of 0.5665, 0.4082 and 0.4523 respectively. There is need for continuous monitoring of these saline lakes for the presence of Artemia resources since many other factors like temperature, the presence of wading migratory birds reported to be the dispersion agent for Artemia were witnessed in these lakes.
Abstract Eight alkaline, saline crater lakes in western Uganda were surveyed between 26th Februar... more Abstract
Eight alkaline, saline crater lakes in western Uganda were surveyed between 26th February and 3rd March, 2014
with an aim of providing information on the physico-chemical features of these less known unique habitats and
provide a basis for comparison with similar environments in other parts of the world. Lakes considered for this
study included; Katwe, Kikorongo, Murumuli, Nyamunuka, Munyange, Bunyampaka, Bagusa and Maseche.
Surface and Bottom measurements of physic-chemical parameters were measured in-situ from at least three georeferenced
points. Water samples for alkalinity, nutrients and detailed ionic analysis were taken from each of the
points. In the laboratory, collected water samples were analysed following APHA standard operating procedures.
All the studied lakes were alkaline and saline in nature as reported in the previous studies except Lake
Kikorongo which was found to be fresh with a salinity of zero in this present study. With the exception of Lake
Murumuli which was found to be a Carbonate-chloride lake, the rest of the sampled lakes are carbonate-sulphate
lakes which is contrary to earlier studies which reported lakes like Katwe and Kikorongo to be Carbonatechloride
lakes.
CV of My works in recent months
International Journal of Ecosystem, 2015
Seven selected saline crater lakes in Western Uganda were surveyed for Artemia occurrence, salini... more Seven selected saline crater lakes in Western Uganda were surveyed for Artemia occurrence, salinity and ionic rates both in the wet and dry season. The Studied lakes included lakes Katwe, Munyanyange, Nyamunuka, Murumuri, Bunyampaka, Bagusa, and Kikorongo. In the field cyst-like materials along the lake shores and foam suspected to have Artemia cysts from the surface of each of the studied saline Crater Lake were collected in a plastic sample bottle. Presence of cysts was examined using the density separation technique. A zooplankton net of 50µm was used to filter water samples to be used for analysis of presence of Artemia biomass. Water samples for ionic composition analysis were taken from at least three geo-references points on each of the studied lakes. In-situ measurements of salinity were taken at each point of sample collection in each of the studied lakes. In the laboratory, collected water samples were analysed following APHA standard operating procedures. Seasonal differe...
Journal of Advances in Medicine and Medical Research, 2021
Introduction: Malaria remains the world’s leading vector-born cause of mortality and morbidity, a... more Introduction: Malaria remains the world’s leading vector-born cause of mortality and morbidity, and Eastern Uganda contains some of the country’s highest prevalence rates. Though academic societies, such as universities, may be prone to high malaria transmission, the extent of the burden Original Research Article Warsame et al.; JAMMR, 33(10): 1-23, 2021; Article no.JAMMR.67472 2 and risk factors in university communities of Eastern Uganda are poorly understood. The aim in this study was to examine malaria prevalence, preventive strategies, and risk factors, among University communities in Eastern Uganda; to inform targeted malaria eradication efforts in academic settings. Methods: A mixed methods approach was applied. A case study of Islamic University in Uganda (IUIU), located in Eastern Uganda, was selected. A retrospective approach was used to determine malaria prevalence in IUIU from August to December 2019. Stratified random sampling was used to select IUIU community members; ...
Journal of Natural Sciences Research, 2015
Eight alkaline, saline crater lakes in western Uganda were surveyed between 26 th February and 3 ... more Eight alkaline, saline crater lakes in western Uganda were surveyed between 26 th February and 3 rd March, 2014 with an aim of providing information on the physico-chemical features of these less known unique habitats and provide a basis for comparison with similar environments in other parts of the world. Lakes considered for this study included; Katwe, Kikorongo, Murumuli, Nyamunuka, Munyange, Bunyampaka, Bagusa and Maseche. Surface and Bottom measurements of physic-chemical parameters were measured in-situ from at least three geo-referenced points. Water samples for alkalinity, nutrients and detailed ionic analysis were taken from each of the points. In the laboratory, collected water samples were analysed following APHA standard operating procedures. All the studied lakes were alkaline and saline in nature as reported in the previous studies except Lake Kikorongo which was found to be fresh with a salinity of zero in this present study. With the exception of Lake Murumuli which ...
Background: Malaria remains the world’s leading vector-born cause of mortality and morbidity, and... more Background: Malaria remains the world’s leading vector-born cause of mortality and morbidity, and Eastern Uganda contains some of the country’s highest prevalence rates. Though academic societies, such as universities, may be prone to high malaria transmission, the extent of the burden and risk factors in university communities of Eastern Uganda are poorly understood. The aim in this study was to examine malaria prevalence, preventive strategies, and risk factors, among University communities in Eastern Uganda; to inform targeted malaria eradication efforts in academic settings. Methods: A mixed methods approach was applied. A case study of Islamic University in Uganda (IUIU), located in Eastern Uganda, was selected. A retrospective approach was used to determine malaria prevalence in IUIU from August to December 2019. Stratified random sampling was used to select IUIU community members; these were subjected to semi-structured questionnaires and Key informant Interviews (KII) to exa...
Two trial experiments were conducted to assess the performance of a commercial dry feed D in comb... more Two trial experiments were conducted to assess the performance of a commercial dry feed D in combination with de-capsulated Artemia (AD), Moina (FD) and dry feed alone on African catfish larvae Clarias gariepinus for 14 days. The trials were conducted sequentially, separated by two months at the same facility to validate the consistence of the weaning effect of the feed on the growth of catfish larvae. Results showed that the final larval mean total length TL (cm) of larvae weaned using a feed combination AD (Trial 1, 1.50±0.013 1; Trial 2, 1.44±0.011), significantly performed better in both trials than that of larvae weaned on the other two diets, FD (Trial1, 1.37±0.011; Trial 2, 1.3510±0.0091) and D (Trial 1, 1.39±0.0141; Trial 2, 1.3150±0.009). There was no significant difference in the final mean total length of catfish larvae weaned on feed combinations FD and D (P>0.05). Specific growth rate (daily length % increment) ranged between 4.2% and 5.1% in all trials with the high...
International Journal of Fisheries and Aquatic Studies, 2014
Brood stock management experiment was conducted at Kireka fish farm Uganda, to evaluate the fecun... more Brood stock management experiment was conducted at Kireka fish farm Uganda, to evaluate the fecundity and economic performance of three new local commercial feeds for African catfish brood stock development and conditioning. The fish were conditioned in earthen ponds, stocked at 0.5 kg/m 3 for three months before spawning. The feeds were code named N2, B3 and N3 for Kajjansi 35%, Ugachick 35% and Tende Innovative Farm feeds respectively. Results indicated that there was no significant difference in the crude protein composition of all the test diets. Significantly lower lipid contents (2.326%) were noticed in N3. Mean number of eggs per unit brood stock weight differed significantly across all feed treatment (F = 10.179, P= 0.002), with N2 producing the highest N = 57,075± 18,922; B3= 51,477±16,266; N3= 45,375±13,399, generally improved from the baseline of 6,874±1001. Fertilization was significantly different (F=3.695E30, P=0.0001), across all diets (Mean; (N2= 78.13±8.99%; B3= 72....
International Journal of Fisheries and Aquaculture, Sep 30, 2016
Journal of Natural Sciences Research, Sep 1, 2019
Journal of Natural Sciences Research, Sep 1, 2019
Journal of Natural Sciences Research, 2015
International Journal of Ecosystem, 2015
In Uganda fish is a great source of animal dietary protein, however, natural stocks continue to d... more In Uganda fish is a great source of animal dietary protein, however, natural stocks continue to decline. Therefore, aquaculture provides a viable option to bridge the increasing fish supply-demand gap. Accordingly, a study was conducted from March to August 2016 to investigate the effect of stocking density on the growth performance, and survival of Nile tilapia (Oreochromis niloticus) in floating net cages
to contribute to aquaculture production in Uganda. Nile tilapia fingerlings, with an average weight of 4.07 g were stocked in 8 m3 cages at three different stocking densities; 200, 250, and 300 fish/m3, and
fed on a locally formulated commercial feed for 180 days. At the end of the experimental period, results showed that fish stocked at lower densities were heavier than those stocked at higher densities. The
mean final weights of fish were; 150.79±85.71, 127.82±68.43 and 118.73±49.29 g in cages stocked with 200, 250 and 300 fish/m3, respectively. The mean final weight in lower density (200 fish /m3) treatments was significantly higher (P<0.05) than that of higher density (300 fish/m3) treatments. The mean relative condition factor of fish ranged from 1.02 to 1.06, but was not significantly different (P>0.05) among the stocking densities. Survival rate and stocking density were negatively correlated. The best survival rate (94.19%) was obtained in low stocked cages (200 fish/m3) compared to 92.98% in highly stocked cages (300 fish/m3). The results of this study suggest that 200 fish/m3 of a cage, is the best stocking density in terms of fish growth parameters.
Abstract Seven selected saline crater lakes in Western Uganda were surveyed for Artemia occurrenc... more Abstract Seven selected saline crater lakes in Western Uganda were surveyed for Artemia occurrence, salinity and ionic rates both in the wet and dry season. The Studied lakes included lakes Katwe, Munyanyange, Nyamunuka, Murumuri, Bunyampaka, Bagusa, and Kikorongo. In the field cyst-like materials along the lake shores and foam suspected to have Artemia cysts from the surface of each of the studied saline Crater Lake were collected in a plastic sample bottle. Presence of cysts was examined using the density separation technique. A zooplankton net of 50μm was used to filter water samples to be used for analysis of presence of Artemia biomass. Water samples for ionic composition analysis were taken from at least three geo-references points on each of the studied lakes. In-situ measurements of salinity were taken at each point of sample collection in each of the studied lakes. In the laboratory, collected water samples were analysed following APHA standard operating procedures. Seasonal differences in salinities and ionic rates within the studied lakes were tested for significance using a two tailed, paired t test. All the studied lakes had neither Artemia cysts nor biomass at the time of sampling both in the dry and wet season. Both in the dry and wet season, the salinity in all the study lakes was much higher than that of sea water while the ionic rates of Cl-/SO42- , Cl-/Na+ + K+, and Mg2+/Ca2+ in all the study lakes were all less than that of sea water (table 1 & figure 2). The dry season salinity of all the study lakes was found to be significantly higher than the salinity in the wet season (t-value = 0.0205). There were no significant seasonal differences in the ionic rates of Cl-/SO42- , Cl-/Na+ + K+, and Mg2+/Ca2+ in the studied lakes with t-values of 0.5665, 0.4082 and 0.4523 respectively. There is need for continuous monitoring of these saline lakes for the presence of Artemia resources since many other factors like temperature, the presence of wading migratory birds reported to be the dispersion agent for Artemia were witnessed in these lakes.
Abstract Eight alkaline, saline crater lakes in western Uganda were surveyed between 26th Februar... more Abstract
Eight alkaline, saline crater lakes in western Uganda were surveyed between 26th February and 3rd March, 2014
with an aim of providing information on the physico-chemical features of these less known unique habitats and
provide a basis for comparison with similar environments in other parts of the world. Lakes considered for this
study included; Katwe, Kikorongo, Murumuli, Nyamunuka, Munyange, Bunyampaka, Bagusa and Maseche.
Surface and Bottom measurements of physic-chemical parameters were measured in-situ from at least three georeferenced
points. Water samples for alkalinity, nutrients and detailed ionic analysis were taken from each of the
points. In the laboratory, collected water samples were analysed following APHA standard operating procedures.
All the studied lakes were alkaline and saline in nature as reported in the previous studies except Lake
Kikorongo which was found to be fresh with a salinity of zero in this present study. With the exception of Lake
Murumuli which was found to be a Carbonate-chloride lake, the rest of the sampled lakes are carbonate-sulphate
lakes which is contrary to earlier studies which reported lakes like Katwe and Kikorongo to be Carbonatechloride
lakes.