Peter Olagbemide | Afe Babalola University, Ado-Ekiti (original) (raw)
Papers by Peter Olagbemide
Advances in Applied Science Research, 2016
Natural products provide many fine chemical and biochemical extracts that have medicinal values. ... more Natural products provide many fine chemical and biochemical extracts that have medicinal values. Phytochemicals are non-nutritive plant chemicals but they are bioactive compounds found in plants that work with nutrients and dietary fibre to protect against diseases. They inhibit the growth of cancer cells, improve immune function, block carcinogens, and help clear out toxins or other damaging substances, among other actions. The aim of the study was the comparison analysis of the phytochemical compositions of some extracts used in alternative medicine. The analyses were carried out on four extracts-the extracts from earthworm, Aloe vera, Ganoderma lucidium, and snail (Archachatina) using standard methods. The means and standard error of means (SEM) were determined using SPSS version 20.The results showed that phytochemicals were majorly present in Aloe vera and Ganoderma extracts and there significant differences (P< 0.05) in the values of most of the phytochemicals between Aloe ...
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Smoked Clarias gariepinus from four major markets in the southwest, Nigeria were analyzed. The ai... more Smoked Clarias gariepinus from four major markets in the southwest, Nigeria were analyzed. The aim was to evaluate the nutritional values of the fish sold at the different markets. The results of the analyses showed that the nutritional values of the smoked fish are of good standard but nutritional and mineral compositions varied from market to market. The moisture content, protein, fat, fibre, ash and carbohydrate contents from the markets were in the range of 9.63 to 10.27%, 53.77 to 54.77%, 11.77 to 13.13%, 6.87 to 8.00%, 0.0 to 0.07% and 15.40 to 16.17% respectively. The range of the mineral compositions was 10.13 to 12.17mg/100g, 0.33 to 0.50mg/100g, 28.33 to 46.67mg/100g, 353.33 to 388.33mg/100g, 22.33 to 33.33mg/100g, and 271.67 to 305.00mg/100g for iron, zinc, magnesium, calcium, potassium and phosphorus respectively. Ascorbic acid, thiamine, niacin and riboflavin contents of the fish were in range of 0.17 to 0.27mg/100g, 0.05 to 0.07mg/100g, 0.24 to 0.28mg/100g, and 0.05 to...
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Moringa oleifera is a plant that is in high demand for its nutritional and medicinal values. This... more Moringa oleifera is a plant that is in high demand for its nutritional and medicinal values. This study was aimed at assessing the nutritional and phytochemical constituents of the leaf of Moringa oleifera cultivated in Ado Ekiti, Nigeria. Samples of leaf of M. oleifera were obtained from six different moringa cultivating locations in Ado Ekiti. The proximate analysis of dried leaf of M. oleifera showed that it is highly rich in protein (28.00±0.33%) and metabolizable energy (2625.25±79.30 Kcal/Kg), with appreciable levels of fat (3.88%), ash (9.88%), crude fibre (12.57%) and carbohydrate (37.87%). The leaf was found to be rich in minerals and vitamins. It contained high concentrations of Zn , Mg , Ca , K and PO , respectively, 64.17±2.04, 2+ 2+ 2+ + 3- 4 643.33±6.06, 82.50±6.89, 430.00±8.37 and 50.43±2.05mg/100g. Low, but appreciable levels of Fe , ascorbic 2+ acid, thiamin, riboflavin and niacin were equally obtained. Phytochemical analysis revealed high concentrations of alkaloid...
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Eleyele Lake is a multipurpose lake in the metropolitan city of Ibadan. It receives wastes from t... more Eleyele Lake is a multipurpose lake in the metropolitan city of Ibadan. It receives wastes from the surrounding communities. The objective of the study was to determine the levels of metals in water from Eleyele Lake and compare them against standard drinking water quality guidelines. Water samples were collected for three months at two sites and analyzed for metals using standard methods. Samples were taken with proper measures such as preservation, storage, and labeling. Collected data were analyzed using Microsoft Excel 2013. Statistical analysis was performed with SPSS software using one-way ANOVA. The obtained values for metals were compared with the standard values set by the World Health Organization (WHO) and local standards such as Nigerian Industrial standard (NIS). Site A showed comparatively higher values of metal concentrations in all the metals detected in the lake except for calcium in Site B which showed higher concentrations. Manganese, iron, lead, copper, zinc, cal...
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Minerals are essentially required for tissue functioning in human beings and their presence in me... more Minerals are essentially required for tissue functioning in human beings and their presence in medicinal plants can have a substantial influence on the therapeutic value of herbal remedies. Excessive intake of some minerals can upset homeostatic balance and cause toxic side effects. Also, severe shortages or self-prescribed minerals can alter the delicate balance in body functions that promotes health. Vitamins are organic compounds present in minute amounts in natural foodstuffs that are essential to normal metabolism and the lack of which in the diet causes deficiency diseases. Mineral and vitamin compositions analyses were carried out on four extracts-the extracts from earthworm, Aloe vera, Ganoderma lucidium, and snail (Archachatina) using standard methods. The aim of the study was the comparison analysis of the mineral and vitamin compositions of some extracts used in alternative medicine. The mineral and vitamin compositions of Ganoderma, Aloe vera, earthworm extracts and snai...
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Journal of Natural Sciences Research, 2014
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Advances in Applied Science Research
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Advances in Life Science and Technology, 2014
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Smoked Clarias gariepinus from four major markets in the southwest, Nigeria were analyzed. The ai... more Smoked Clarias gariepinus from four major markets in the southwest, Nigeria were
analyzed. The aim was to evaluate the nutritional values of the fish sold at the different markets.
The results of the analyses showed that the nutritional values of the smoked fish are of good
standard but nutritional and mineral compositions varied from market to market. The moisture
content, protein, fat, fibre, ash and carbohydrate contents from the markets were in the range of
9.63 to 10.27%, 53.77 to 54.77%, 11.77 to 13.13%, 6.87 to 8.00%, 0.0 to 0.07% and 15.40 to
16.17% respectively. The range of the mineral compositions was 10.13 to 12.17mg/100g, 0.33 to
0.50mg/100g, 28.33 to 46.67mg/100g, 353.33 to 388.33mg/100g, 22.33 to 33.33mg/100g, and
271.67 to 305.00mg/100g for iron, zinc, magnesium, calcium, potassium and phosphorus
respectively. Ascorbic acid, thiamine, niacin and riboflavin contents of the fish were in range of
0.17 to 0.27mg/100g, 0.05 to 0.07mg/100g, 0.24 to 0.28mg/100g, and 0.05 to 0.08mg/100g
respectively.
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Proximate study was conducted on a Cortinarius sp found on farmlands in Akinyele Local Government... more Proximate study was conducted on a Cortinarius sp found on farmlands in Akinyele Local Government Area of Oyo state of Nigeria to ascertain its nutritional composition. The overall nutritional potential of the Cortinarius species was quite good and it shows that the species of mushroom is highly nutritive with crude protein 19.47%, carbohydrates, 48.60% and crude fibre 6.80%. It was however, observed the contents of the following were relatively low; zinc was 0.08mg/100g, riboflavin 0.08mg/100g and thiamine 0.07mg/100g. Potassium was highest and was 221.67mg/100g followed by calcium 183.33mg/100g. Phytochemical screening revealed the presence of varying quantities of alkaloids, saponins, tannins, oxalates, cyanogenic glycosides and phytates. These bioactive compounds may make it useful for therapeutic uses. This study shows that this mushroom has a great potential in complementing protein and minerals deficiencies prevalent in the developing countries.
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The study assessed the prevalence of symptoms of asthma among Nigerian poultry workers and the po... more The study assessed the prevalence of symptoms of asthma among Nigerian poultry workers and the possible
pathological changes in lung associated with dust exposure through an indirect experimental exposure of poultry
dust to albino rats. Questionnaire was developed to elicit data on symptoms of asthma, and administered to 250
poultry workers as well as 100 control subjects. Forty albino rats were divided into 5 groups of 8 rats each, 4
groups were exposed to poultry dust in an exposure chamber, while the fifth group served as control. The
histopathological features of lungs of the exposed rats include cells infiltration in alveoli, interstitial cells
infiltration, alveolar wall thickening and granuloma formation. In most cases, necrosis and breaking of alveolar
walls to form large zones were observed in the lungs of the exposed rats. Vasodilatation and fibrosis of the lungs
were equally observed. The degree of lungs inflammation or degeneration was found to be positively correlated with
duration of exposure to poultry dust (r = +0.918, p < 0.05). Significantly higher prevalence of sputum, cough,
difficulty in breathing, tightness of chest and wheezing were obtained for poultry workers than the control populace.
The result indicates that prolonged inhalation of poultry dust can result in extrinsic allergic alveolitis with
prevalence of symptoms of asthma.
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Phytoplankton density at different depths was determined by drop methods. ANOVA test on each of t... more Phytoplankton density at different depths was determined by drop methods. ANOVA test on each of the values of temperature, conductivity, p H and nitrate showed a significant difference at 5% level during the sampling period and within the sampling depths. No significant difference at 5% level for the values of dissolved CO2, dissolved O2 and alkalinity at the sampling depths. A total of four families comprising 43 genera of phytoplankton were identified. Phytoplankton density per litre decreased with increase in the sampling depths. There were indicators among the phytoplankton that the dam is polluted. Phytoplankton composition, stratification in relation to dissolved substances was shown.
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The proximate, mineral analyses and anti-nutrient compositions of Moringa oleifera (Drumstick) wh... more The proximate, mineral analyses and anti-nutrient compositions of Moringa oleifera (Drumstick) which are
commonly used as nutritional and medicinal plant in Nigeria were carried out on both raw and defatted seeds.
The nutrient and the anti-nutrients determination were done using various standards. Mean and standard error of
means of the triplicate determinations were calculated. The result showed that defatting Moringa oleifera seeds
increased the fibre, carbohydrate, vitamins B and C, iron and zinc content and significantly reduced the calcium,
potassium and phosphate contents. The result also showed that defatting Moringa oleifera significantly
decreased the tannin, alkaloids, saponin, phytate, oxalate levels but increased the cyanogenic glycosides level to
a level lower than what is considered toxic to human beings and livestock. Hence, the defatted cake could be
used in fortification of other food materials.
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Zooplankton density at the different depths was determined. Physico-chemical parameters were rela... more Zooplankton density at the different depths was determined. Physico-chemical parameters were related to the
vertical distribution of zooplankton in the dam. Temperature, pH, dissolved Oxygen decrease with depth while
alkalinity, dissolved Carbon dioxide, Nitrate contents and conductivity increase with depth. Zooplankton density
decreases with increase in the sampling depths. Two genera of Cladocera, four genera of Protozoa, four genera
of Copepoda and five genera of Rotifera were identified. The highest number of zooplankton was recorded in the
month of May. The study demonstrates that the differences in the vertical distribution and species diversity are
directly related to the influence of lake stratification. A connection was detected between the depth and number
of individuals. In this study, the average vertical position of the zooplankton ranged from less than one metre to
more than 3 metres, and relationships to environmental factors were quite variable, depending on zooplankton
group and sampling date. However, for individual zooplankton groups and sampling dates, temperature and
oxygen profiles also significantly influenced zooplankton vertical position.
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The study was aimed at assessing the prevalence of mites in poultry dust and its possible contrib... more The study was aimed at assessing the prevalence of mites in poultry dust and its possible contribution to
respiratory diseases among the Nigerian poultry workers. Settled dusts from 20 poultry confinements were
analysed for the presence of mites. Questionnaire was administered to assess the symptoms of respiratory illhealth
and socio-demographic profiles of poultry workers. Mites were recovered from of all the poultry twenty
dust samples. The species of mites isolated were poultry mite Dermanyssus gallinae, house dust mite
Dermatophagoides evansi and rodent mite Ornithosonysus bacoti. Significantly higher frequencies (p<0.001) for
symptoms of bronchitis/hyperactive airways (cough, sputum, shortness of breath, tightness in chest, wheezing)
and symptoms of mucous membrane irritation (running nose, scratchy throat burning/watering eyes), were
reported by poultry workers than control populace. Employers in the poultry industry have to undertake a careful
health surveillance of their employees.
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Phytoplankton density at three stations along the length of the dam was studied. The drop method ... more Phytoplankton density at three stations along the length of the dam was studied. The
drop method was used for the determination of the phytoplankton density. A total of
four families made up of 20 genera were identified. No significant difference at
5% level of the ANOVA test on the values of temperature, conductivity, dissolved O2,
alkalinity and dissolved CO2 at the stations. There is a significant difference of the
values of nitrate at the stations. The difference in nitrate content at the station was due
to the rate at which particles settled as the water of the dam flowed downstream.
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The study was carried out at Lekki Lagoon which is part of the Lagoon system in the Western coast... more The study was carried out at Lekki Lagoon which is part of the Lagoon system in the
Western coast of Nigeria. Samples of Schilbe mystus were obtained from Epe fish
depot for six months (January to June). A total of 337 specimens were examined.
Identification of this species was done using the technique proffered by Olatunde
(1977). Fecundity was estimated by using the gravimetric sub-sampling method (Dry
technique). Overall sex ratio of 1.0: 2.5 in favour of the female was obtained. The sex
ratio varies monthly. The highest sex ratio in June was associated with breeding
activities. Condition factors (K) were found not to vary with stages of gonad maturity
in both sexes while Gonadosomatic index (GSI) increased with the stages of maturity.
Fecundity ranged from 10,906 to 23,700 eggs. Breeding condition was attained during
the rains.
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Length-weight relationship and length-frequency distribution of 6months samples of Schilbe mystus... more Length-weight relationship and length-frequency distribution of 6months samples of Schilbe mystus from Lekki Lagoon were estimated. The length range was 10.1 – 20.7cm for both sexes. The young fish did not constitute the highest percentage of all the catches. The parameters a and b of length-weight relationship were -2.075 and 2.938, that is, the regression constant and the regression presented an inverse relationship. The species exhibited negative allometric growth. The importance of the estimated length-weight relationship parameters to the assessment of Schilbe mystus in Lekki Lagoon was highlighted.
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Advances in Applied Science Research, 2016
Natural products provide many fine chemical and biochemical extracts that have medicinal values. ... more Natural products provide many fine chemical and biochemical extracts that have medicinal values. Phytochemicals are non-nutritive plant chemicals but they are bioactive compounds found in plants that work with nutrients and dietary fibre to protect against diseases. They inhibit the growth of cancer cells, improve immune function, block carcinogens, and help clear out toxins or other damaging substances, among other actions. The aim of the study was the comparison analysis of the phytochemical compositions of some extracts used in alternative medicine. The analyses were carried out on four extracts-the extracts from earthworm, Aloe vera, Ganoderma lucidium, and snail (Archachatina) using standard methods. The means and standard error of means (SEM) were determined using SPSS version 20.The results showed that phytochemicals were majorly present in Aloe vera and Ganoderma extracts and there significant differences (P< 0.05) in the values of most of the phytochemicals between Aloe ...
Bookmarks Related papers MentionsView impact
Smoked Clarias gariepinus from four major markets in the southwest, Nigeria were analyzed. The ai... more Smoked Clarias gariepinus from four major markets in the southwest, Nigeria were analyzed. The aim was to evaluate the nutritional values of the fish sold at the different markets. The results of the analyses showed that the nutritional values of the smoked fish are of good standard but nutritional and mineral compositions varied from market to market. The moisture content, protein, fat, fibre, ash and carbohydrate contents from the markets were in the range of 9.63 to 10.27%, 53.77 to 54.77%, 11.77 to 13.13%, 6.87 to 8.00%, 0.0 to 0.07% and 15.40 to 16.17% respectively. The range of the mineral compositions was 10.13 to 12.17mg/100g, 0.33 to 0.50mg/100g, 28.33 to 46.67mg/100g, 353.33 to 388.33mg/100g, 22.33 to 33.33mg/100g, and 271.67 to 305.00mg/100g for iron, zinc, magnesium, calcium, potassium and phosphorus respectively. Ascorbic acid, thiamine, niacin and riboflavin contents of the fish were in range of 0.17 to 0.27mg/100g, 0.05 to 0.07mg/100g, 0.24 to 0.28mg/100g, and 0.05 to...
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Moringa oleifera is a plant that is in high demand for its nutritional and medicinal values. This... more Moringa oleifera is a plant that is in high demand for its nutritional and medicinal values. This study was aimed at assessing the nutritional and phytochemical constituents of the leaf of Moringa oleifera cultivated in Ado Ekiti, Nigeria. Samples of leaf of M. oleifera were obtained from six different moringa cultivating locations in Ado Ekiti. The proximate analysis of dried leaf of M. oleifera showed that it is highly rich in protein (28.00±0.33%) and metabolizable energy (2625.25±79.30 Kcal/Kg), with appreciable levels of fat (3.88%), ash (9.88%), crude fibre (12.57%) and carbohydrate (37.87%). The leaf was found to be rich in minerals and vitamins. It contained high concentrations of Zn , Mg , Ca , K and PO , respectively, 64.17±2.04, 2+ 2+ 2+ + 3- 4 643.33±6.06, 82.50±6.89, 430.00±8.37 and 50.43±2.05mg/100g. Low, but appreciable levels of Fe , ascorbic 2+ acid, thiamin, riboflavin and niacin were equally obtained. Phytochemical analysis revealed high concentrations of alkaloid...
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Eleyele Lake is a multipurpose lake in the metropolitan city of Ibadan. It receives wastes from t... more Eleyele Lake is a multipurpose lake in the metropolitan city of Ibadan. It receives wastes from the surrounding communities. The objective of the study was to determine the levels of metals in water from Eleyele Lake and compare them against standard drinking water quality guidelines. Water samples were collected for three months at two sites and analyzed for metals using standard methods. Samples were taken with proper measures such as preservation, storage, and labeling. Collected data were analyzed using Microsoft Excel 2013. Statistical analysis was performed with SPSS software using one-way ANOVA. The obtained values for metals were compared with the standard values set by the World Health Organization (WHO) and local standards such as Nigerian Industrial standard (NIS). Site A showed comparatively higher values of metal concentrations in all the metals detected in the lake except for calcium in Site B which showed higher concentrations. Manganese, iron, lead, copper, zinc, cal...
Bookmarks Related papers MentionsView impact
Minerals are essentially required for tissue functioning in human beings and their presence in me... more Minerals are essentially required for tissue functioning in human beings and their presence in medicinal plants can have a substantial influence on the therapeutic value of herbal remedies. Excessive intake of some minerals can upset homeostatic balance and cause toxic side effects. Also, severe shortages or self-prescribed minerals can alter the delicate balance in body functions that promotes health. Vitamins are organic compounds present in minute amounts in natural foodstuffs that are essential to normal metabolism and the lack of which in the diet causes deficiency diseases. Mineral and vitamin compositions analyses were carried out on four extracts-the extracts from earthworm, Aloe vera, Ganoderma lucidium, and snail (Archachatina) using standard methods. The aim of the study was the comparison analysis of the mineral and vitamin compositions of some extracts used in alternative medicine. The mineral and vitamin compositions of Ganoderma, Aloe vera, earthworm extracts and snai...
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Journal of Natural Sciences Research, 2014
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Advances in Applied Science Research
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Advances in Life Science and Technology, 2014
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Smoked Clarias gariepinus from four major markets in the southwest, Nigeria were analyzed. The ai... more Smoked Clarias gariepinus from four major markets in the southwest, Nigeria were
analyzed. The aim was to evaluate the nutritional values of the fish sold at the different markets.
The results of the analyses showed that the nutritional values of the smoked fish are of good
standard but nutritional and mineral compositions varied from market to market. The moisture
content, protein, fat, fibre, ash and carbohydrate contents from the markets were in the range of
9.63 to 10.27%, 53.77 to 54.77%, 11.77 to 13.13%, 6.87 to 8.00%, 0.0 to 0.07% and 15.40 to
16.17% respectively. The range of the mineral compositions was 10.13 to 12.17mg/100g, 0.33 to
0.50mg/100g, 28.33 to 46.67mg/100g, 353.33 to 388.33mg/100g, 22.33 to 33.33mg/100g, and
271.67 to 305.00mg/100g for iron, zinc, magnesium, calcium, potassium and phosphorus
respectively. Ascorbic acid, thiamine, niacin and riboflavin contents of the fish were in range of
0.17 to 0.27mg/100g, 0.05 to 0.07mg/100g, 0.24 to 0.28mg/100g, and 0.05 to 0.08mg/100g
respectively.
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Proximate study was conducted on a Cortinarius sp found on farmlands in Akinyele Local Government... more Proximate study was conducted on a Cortinarius sp found on farmlands in Akinyele Local Government Area of Oyo state of Nigeria to ascertain its nutritional composition. The overall nutritional potential of the Cortinarius species was quite good and it shows that the species of mushroom is highly nutritive with crude protein 19.47%, carbohydrates, 48.60% and crude fibre 6.80%. It was however, observed the contents of the following were relatively low; zinc was 0.08mg/100g, riboflavin 0.08mg/100g and thiamine 0.07mg/100g. Potassium was highest and was 221.67mg/100g followed by calcium 183.33mg/100g. Phytochemical screening revealed the presence of varying quantities of alkaloids, saponins, tannins, oxalates, cyanogenic glycosides and phytates. These bioactive compounds may make it useful for therapeutic uses. This study shows that this mushroom has a great potential in complementing protein and minerals deficiencies prevalent in the developing countries.
Bookmarks Related papers MentionsView impact
The study assessed the prevalence of symptoms of asthma among Nigerian poultry workers and the po... more The study assessed the prevalence of symptoms of asthma among Nigerian poultry workers and the possible
pathological changes in lung associated with dust exposure through an indirect experimental exposure of poultry
dust to albino rats. Questionnaire was developed to elicit data on symptoms of asthma, and administered to 250
poultry workers as well as 100 control subjects. Forty albino rats were divided into 5 groups of 8 rats each, 4
groups were exposed to poultry dust in an exposure chamber, while the fifth group served as control. The
histopathological features of lungs of the exposed rats include cells infiltration in alveoli, interstitial cells
infiltration, alveolar wall thickening and granuloma formation. In most cases, necrosis and breaking of alveolar
walls to form large zones were observed in the lungs of the exposed rats. Vasodilatation and fibrosis of the lungs
were equally observed. The degree of lungs inflammation or degeneration was found to be positively correlated with
duration of exposure to poultry dust (r = +0.918, p < 0.05). Significantly higher prevalence of sputum, cough,
difficulty in breathing, tightness of chest and wheezing were obtained for poultry workers than the control populace.
The result indicates that prolonged inhalation of poultry dust can result in extrinsic allergic alveolitis with
prevalence of symptoms of asthma.
Bookmarks Related papers MentionsView impact
Phytoplankton density at different depths was determined by drop methods. ANOVA test on each of t... more Phytoplankton density at different depths was determined by drop methods. ANOVA test on each of the values of temperature, conductivity, p H and nitrate showed a significant difference at 5% level during the sampling period and within the sampling depths. No significant difference at 5% level for the values of dissolved CO2, dissolved O2 and alkalinity at the sampling depths. A total of four families comprising 43 genera of phytoplankton were identified. Phytoplankton density per litre decreased with increase in the sampling depths. There were indicators among the phytoplankton that the dam is polluted. Phytoplankton composition, stratification in relation to dissolved substances was shown.
Bookmarks Related papers MentionsView impact
The proximate, mineral analyses and anti-nutrient compositions of Moringa oleifera (Drumstick) wh... more The proximate, mineral analyses and anti-nutrient compositions of Moringa oleifera (Drumstick) which are
commonly used as nutritional and medicinal plant in Nigeria were carried out on both raw and defatted seeds.
The nutrient and the anti-nutrients determination were done using various standards. Mean and standard error of
means of the triplicate determinations were calculated. The result showed that defatting Moringa oleifera seeds
increased the fibre, carbohydrate, vitamins B and C, iron and zinc content and significantly reduced the calcium,
potassium and phosphate contents. The result also showed that defatting Moringa oleifera significantly
decreased the tannin, alkaloids, saponin, phytate, oxalate levels but increased the cyanogenic glycosides level to
a level lower than what is considered toxic to human beings and livestock. Hence, the defatted cake could be
used in fortification of other food materials.
Bookmarks Related papers MentionsView impact
Zooplankton density at the different depths was determined. Physico-chemical parameters were rela... more Zooplankton density at the different depths was determined. Physico-chemical parameters were related to the
vertical distribution of zooplankton in the dam. Temperature, pH, dissolved Oxygen decrease with depth while
alkalinity, dissolved Carbon dioxide, Nitrate contents and conductivity increase with depth. Zooplankton density
decreases with increase in the sampling depths. Two genera of Cladocera, four genera of Protozoa, four genera
of Copepoda and five genera of Rotifera were identified. The highest number of zooplankton was recorded in the
month of May. The study demonstrates that the differences in the vertical distribution and species diversity are
directly related to the influence of lake stratification. A connection was detected between the depth and number
of individuals. In this study, the average vertical position of the zooplankton ranged from less than one metre to
more than 3 metres, and relationships to environmental factors were quite variable, depending on zooplankton
group and sampling date. However, for individual zooplankton groups and sampling dates, temperature and
oxygen profiles also significantly influenced zooplankton vertical position.
Bookmarks Related papers MentionsView impact
The study was aimed at assessing the prevalence of mites in poultry dust and its possible contrib... more The study was aimed at assessing the prevalence of mites in poultry dust and its possible contribution to
respiratory diseases among the Nigerian poultry workers. Settled dusts from 20 poultry confinements were
analysed for the presence of mites. Questionnaire was administered to assess the symptoms of respiratory illhealth
and socio-demographic profiles of poultry workers. Mites were recovered from of all the poultry twenty
dust samples. The species of mites isolated were poultry mite Dermanyssus gallinae, house dust mite
Dermatophagoides evansi and rodent mite Ornithosonysus bacoti. Significantly higher frequencies (p<0.001) for
symptoms of bronchitis/hyperactive airways (cough, sputum, shortness of breath, tightness in chest, wheezing)
and symptoms of mucous membrane irritation (running nose, scratchy throat burning/watering eyes), were
reported by poultry workers than control populace. Employers in the poultry industry have to undertake a careful
health surveillance of their employees.
Bookmarks Related papers MentionsView impact
Phytoplankton density at three stations along the length of the dam was studied. The drop method ... more Phytoplankton density at three stations along the length of the dam was studied. The
drop method was used for the determination of the phytoplankton density. A total of
four families made up of 20 genera were identified. No significant difference at
5% level of the ANOVA test on the values of temperature, conductivity, dissolved O2,
alkalinity and dissolved CO2 at the stations. There is a significant difference of the
values of nitrate at the stations. The difference in nitrate content at the station was due
to the rate at which particles settled as the water of the dam flowed downstream.
Bookmarks Related papers MentionsView impact
The study was carried out at Lekki Lagoon which is part of the Lagoon system in the Western coast... more The study was carried out at Lekki Lagoon which is part of the Lagoon system in the
Western coast of Nigeria. Samples of Schilbe mystus were obtained from Epe fish
depot for six months (January to June). A total of 337 specimens were examined.
Identification of this species was done using the technique proffered by Olatunde
(1977). Fecundity was estimated by using the gravimetric sub-sampling method (Dry
technique). Overall sex ratio of 1.0: 2.5 in favour of the female was obtained. The sex
ratio varies monthly. The highest sex ratio in June was associated with breeding
activities. Condition factors (K) were found not to vary with stages of gonad maturity
in both sexes while Gonadosomatic index (GSI) increased with the stages of maturity.
Fecundity ranged from 10,906 to 23,700 eggs. Breeding condition was attained during
the rains.
Bookmarks Related papers MentionsView impact
Length-weight relationship and length-frequency distribution of 6months samples of Schilbe mystus... more Length-weight relationship and length-frequency distribution of 6months samples of Schilbe mystus from Lekki Lagoon were estimated. The length range was 10.1 – 20.7cm for both sexes. The young fish did not constitute the highest percentage of all the catches. The parameters a and b of length-weight relationship were -2.075 and 2.938, that is, the regression constant and the regression presented an inverse relationship. The species exhibited negative allometric growth. The importance of the estimated length-weight relationship parameters to the assessment of Schilbe mystus in Lekki Lagoon was highlighted.
Bookmarks Related papers MentionsView impact