Assessment of micro and macro nutrients in poultry feeds available in Dhaka city, Bangladesh.

2017 ◽  
Vol 1 ◽  
pp. 264
Author(s):  
Md Didarul Islam ◽  
Ashiqur Rahaman ◽  
Fahmida Jannat
Keyword(s):  
Heavy Metals ◽  
Adverse Effect ◽  
The Other ◽  
Nutrient Level ◽  
Dhaka City ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Low Concentration ◽  
Feed Formulation ◽  
Macro Nutrients

This study was based on to determine the concentration of macro and micro nutrients as well as toxic and nontoxic heavy metals present in the chicken feed available in Dhaka city of Bangladesh. All macro nutrients, if present in the feed at high concentration have some adverse effect, at the same time if this nutrient present in the feed at low concentration this have some adverse effect too. So that this nutrient level should be maintained at a marginal level. On the other side toxic heavy metals if present in the feed at very low concentration those can contaminate the total environment of the ecosystem. In this study six brand samples (starter, grower, finisher and layer) which was collected from different renowned chicken feed formulation industry in Bangladesh. Those samples were prepared for analysis by wet ashing and then metals were determined by Atomic Absorption Spectroscopy. It was found that 27.7 to 68.4, 57.3 to 121.9, 0.21 to 4.1, 0.32 to 2.1, 0.11 to 1.58, 0.28 to 2.11 and 0.28 to 1.78 for zinc, iron, copper, mercury, cadmium, nickel and cobalt respectively. It was found that essential macro and micro nutrients were present in the feed in low concentration on the other side mercury was present in high concentration in the feed samples.

scholarly journals Assessment of micro and macro nutrients in poultry feeds available in Dhaka city, Bangladesh

1970 ◽  
Vol 1 ◽  
pp. 264
Author(s):  
Md Didarul Islam ◽  
Ashiqur Rahaman, Fahmida Jannat
Keyword(s):  
Heavy Metals ◽  
Adverse Effect ◽  
The Other ◽  
Nutrient Level ◽  
Dhaka City ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Low Concentration ◽  
Feed Formulation ◽  
Macro Nutrients

This study was based on to determine the concentration of macro and micro nutrients as well as toxic and nontoxic heavy metals present in the chicken feed available in Dhaka city of Bangladesh. All macro nutrients, if present in the feed at high concentration have some adverse effect, at the same time if this nutrient present in the feed at low concentration this have some adverse effect too. So that this nutrient level should be maintained at a marginal level. On the other side toxic heavy metals if present in the feed at very low concentration those can contaminate the total environment of the ecosystem. In this study six brand samples (starter, grower, finisher and layer) which was collected from different renowned chicken feed formulation industry in Bangladesh. Those samples were prepared for analysis by wet-ashing and then metals were determined by Atomic Absorption Spectroscopy. It was found that 27.7 to 68.4, 57.3 to 121.9, 0.21 to 4.1, 0.32 to 2.1, 0.11 to 1.58, 0.28 to 2.11 and 0.28 to 1.78 for zinc, iron, copper, mercury, cadmium, nickel and cobalt respectively. It was found that essential macro and micro nutrients were present in the feed in low concentration on the other side mercury was present in high concentration in the feed samples

ASSESSMENT OF HEAVY METAL CONCENTRATION IN COCONUT WATER

1970 ◽  
pp. 07-10
Author(s):  
MdDidarul Islam, Ashiqur Rahaman, Aboni Afrose
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Concentration ◽  
Coconut Water ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Toxic Heavy Metal ◽  
Low Concentration ◽  
Wet Ashing ◽  
Aas Method

This study was based on determining concentration of essential and toxic heavy metal in coconut water available at a local Hazaribagh area in Dhaka, Bangladesh. All essential minerals, if present in the drinking water at high concentration or very low concentration, it has negative actions. In this study, fifteen samples and eight heavy metals were analyzed by Atomic Absorption Spectroscopy (AAS) method which was followed by wet ashing digestion method. The concentration obtained in mg/l were in the range of 0.3 to 1.5, 7.77 to 21.2, 0 to 0.71, 0 to 0.9, 0 to 0.2, 0.9 to 17.3, 0.1 to 0.9, 0 to 0.9 and 0 to 0.7 for Fe, Ni, Cu, Cd, Cr, Zn, Pb and Se respectively. From this data it was concluded that any toxic heavy metals like Cd, Cr, Pb and Ni exceed their toxicity level and some essential nutrients were in low concentration in those samples. 

scholarly journals Health Hazards of Toxic and Essential Heavy Metals from the Poultry Waste on Human and Aquatic Organisms

2021 ◽  
Author(s):  
Adesakin Taiwo Adekanmi
Keyword(s):  
Heavy Metals ◽  
Animal Feed ◽  
Organic Fertilizer ◽  
Aquatic Organisms ◽  
Complete Removal ◽  
Poultry Meat ◽  
Poultry Waste ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Feed Formulation

This research was conducted to examine the impact of some essential heavy metals used as a supplement during animal feed formulation and the toxic from unregulated discharges of untreated poultry waste into water bodies on man and aquatic organisms. During the processing of poultry feed, certain heavy metals are used as a supplement such as selenium, copper, zinc, iron etc. to enhance poultry meat and egg yield which is also increase the daily discharge of anthropogenic wastes into our environment that contain high concentration of heavy metals discharges into aquatic environment globally, especially in underdeveloped where this waste are not treated before discharge or used in agriculture as an organic fertilizer in planting crops as a result of this it become absorb by plants and could pose a serious health risk to man and aquatic species as well as affect the ecological balance that can be transfer to humans via the food chain. Some organisms are kills as a result of the toxic heavy metals in water and can affect their growths. Bio-accumulated in the body of certain species, such as fish, which are eaten by humans that causes devastating diseases such as Minamata and Itai-Itai. Regulation of the use some heavy metals as a supplement in feed production or complete removal of it in animal feed should be adopt in order to minimize the human health risks and environmental contamination associated with these animal waste.

Inhibitory effects of calcium ionophore pretreatment of porcine oocytes on polyspermic fertilization

Zygote ◽  
2006 ◽  
Vol 14 (1) ◽  
pp. 17-22 ◽  
Author(s):  
T. Hayashi ◽  
H. Sato ◽  
H. Iwata ◽  
T. Kuwayama ◽  
Y. Monji
Keyword(s):  
Calcium Ionophore ◽  
Inhibitory Effect ◽  
Calcium Ionophore A23187 ◽  
The Other ◽  
Ionophore A23187 ◽  
Inhibitory Effects ◽  
High Concentration ◽  
Maturation Period ◽  
Low Concentration ◽  
Other Hand

The present study examined the inhibitory effects of various pretreatment concentrations (0–100 μM) of the calcium ionophore A23187 on polyspermic fertilization and then examined the effect of the maturation period and the time between calcium ionophore treatment and fertilization on the inhibitory effect of calcium ionophore on polyspermic fertilization. In experiment 1, a high concentration of calcium ionophore (100 μM) increased the rate of activated oocytes, but the rate of fertilization declined. On the other hand, when oocytes were treated with a low concentration of calcium ionophore (10 μM), monospermic fertilization was significantly increased (10 μM; 31.3%) (p < 0.05). In experiment 2, oocytes were cultured for various times (0, 0.5, 3, 6 h) after calcium ionophore treatment (10 μM) before fertilization. The highest rate of monospermic fertilization was detected in the oocytes cultured for 6 h after calcium ionophore treatment before fertilization. In experiments 3 and 4, we examined the effect of the maturation period (40 h or 44 h) on the rate of fertilization and blastulation of oocytes pretreated with calcium ionophore. The treatment of oocytes with calcium ionophore significantly decreased the rate of polyspermic fertilization regardless of the maturation period (44 h: with calcium ionophore 26.25% vs without 78.8%; 40 h: with calcium ionophore 37.5% vs without 77.5%); however, calcium ionophore treatment increased the rates of monospermic fertilization and blastulation of the oocytes matured for 44 h, but not those matured for 40 h. In conclusion, activation with a low concentration of calcium ionophore (10 μM) and a further 6 h of culture before fertilization improved the rate of monospermic fertilization and blastulation.

Effect of high concentration of organic and inorganic matters in landfill leachate on the treatment of heavy metals in very low concentration level

1997 ◽  
Vol 36 (12) ◽  
pp. 349-356 ◽  
Author(s):  
T. Urase ◽  
M. Salequzzaman ◽  
S. Kobayashi ◽  
T. Matsuo ◽  
K. Yamamoto ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Concentration Level ◽  
Water Environment ◽  
Limiting Factor ◽  
High Concentration ◽  
Landfill Leachates ◽  
Leachate Treatment ◽  
Surrounding Water ◽  
Low Concentration

Various heavy metals in the landfill leachates were measured up to very low concentration levels of micrograms per litre. Though no violation to Japanese effluent standards was found in respect of individual metal, leachate or treated leachate it still contains higher concentrations of total heavy metals than surrounding water environment. The effluent concentration after treatment was of the same order as raw leachate. Maximum metal solubilities in leachate were calculated taking the presence of inorganic metal complexes into account. Solubilities of metals were high enough and they were not the limiting factor determining concentrations after coagulation. The coagulation with higher pH was not successful in reducing concentration of leachate - origin - metals contrary to the case of pure chemical metals. The heavy metals especially nickel and copper in the leachate were associated with organic matter and consequently they remained in solution unless organic matter was removed. Application of nanofiltration to leachate treatment was studied. It was possible to separate metals from less toxic salts by low retention nanofiltration membranes.

scholarly journals Metallic trace elements contained in the sediments of Dayet Er-Roumi Lake (Morocco)

2021 ◽  
Vol 298 ◽  
pp. 05004
Author(s):  
Sara El Ghizi ◽  
Sliman Hssaissoune ◽  
Mohammed El Bouch ◽  
Mohamed Sadik ◽  
Mustapha Hasnaoui
Keyword(s):  
Heavy Metals ◽  
Microwave Plasma ◽  
Winter Season ◽  
Contamination Factor ◽  
Atomic Emission ◽  
Fish Mortality ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Metallic Trace Elements ◽  
Spatio Temporal

The contamination of aquatic ecosystems with metals remains a serious environmental problem of growing concern. Sediments are often studied as reservoirs or wells for many chemical pollutants. They are micropollutant traps; they also indicate the watercourse's historical pollution, lagoons, and lakes…Lake Dayet Er-Roumi (SIBE) is the only permanent natural lake in the Khemisset region (Morocco); this wetland is affected by several forms of pollution that are mainly linked to human activities (agricultural, domestic, industrial, etc.). The objective of our study is to contribute, through qualitative and quantitative analysis, to the assessment of lake sediment pollution by Spatio-temporal monitoring of certain toxic heavy metals such as Mn, Zn, Cr, Cd. These sediments are collected on the level of the lake's surface; the concentration of heavy metals was measured by microwave plasma atomic emission spectroscope (MP-AES). Metal analyses carried out at three measuring points during the winter season reveal a high concentration of Zn, Cr, and Mn at all stations during the winter season, which far exceeds the recommended standards, with a low level of Cd. The contamination factor "FC" and the degree of contamination "DC" reveal polymetallic contaminations dominated by two elements, zinc, and Chromium, which are the most worrying. These results clearly show that lake Dayet Er-Roumi is polluted; strategies to limit the lake's pollution must be implemented to avoid several ecological problems (fish mortality, etc.).

scholarly journals Assessment of Some Heavy Metals in Selected Vegetables, Fruits and their Respective Soil

2020 ◽  
pp. 70-74
Keyword(s):  
Heavy Metals ◽  
Fruits And Vegetables ◽  
Antioxidant Properties ◽  
Maximum Level ◽  
Psidium Guajava ◽  
Abelmoschus Esculentus ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Safe Limit ◽  
Vegetables And Fruits

High concentration of heavy metal content of fruits and vegetables may reduce their antioxidant properties. Therefore, the concentration of selected heavy metals such as Cr, Ni, Mn, Fe, Mg, Cu and Pb in vegetables (Colocasia esculanta and Abelmoschus esculentus) and fruits (Psidium guajava and Pyrus) was assessed using atomic absorption spectrophotometer. The highest concentrations of heavy metals in vegetables and fruits were found 0.019, 0.008, 0.072, 0.241, 1.754, 0.107 and 0.014 mg/g for Cr, Ni, Mn, Fe, Mg, Cu and Pb, respectively. Level of Cr was found higher in Colocasia esculanta (0.011 mg/g). The highest level of Ni was found in Pyrus (0.008mg/g) while lowest in the Soil of Abelmoschus esculentus (0.003 mg/g). The highest level of Mn was observed in Soil of Colocasia esculanta (0.072 mg/g) while lowest in Abelmoschus esculentus (0.007 mg/g). Maximum level of Mg was found in Soil of Psidium guajava while minimum in Colocasia esculant. Abelmoschus esculentus showed highest level of Cu while minimum level was found in Colocasia esculanta. Pb showed maximum amount in Psidium guajava and minimum in soil of Abelmoschus esculentus. The values of Cr, Ni, Mn, Fe, Mg, Cu and Pb in all samples are in the safe limit. However the study indicates that the vegetables, fruits and soil samples are contaminated by toxic heavy metals.

Australian Biosolids: Characterization and Determination of Available Copper

2004 ◽  
Vol 1 (2) ◽  
pp. 116 ◽  
Author(s):  
Ian W. Oliver ◽  
Graham Merrington ◽  
Mike J. McLaughlin
Keyword(s):  
Heavy Metals ◽  
Agricultural Land ◽  
Low Cost ◽  
Land Application ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Protection Factor ◽  
Metal Concentrations ◽  
Total Metal ◽  
High Concentrations

Environmental Context. Land application of sewage-derived biosolids is both an inexpensive method to dispose of waste and a simple way to increase soil fertility and stability. However, biosolids often contain high concentrations of heavy metals, but not all of the metals are immediately available for uptake by the soil or other organisms. To determine if this toxicologic risk outweighs the benefits, the degree of ecologically available metal, rather than simply the entire metal content, must be known in both the as-disposed and worst conditions scenarios. Application of these principles requires regulatory bodies to amend their guidelines. Abstract. Application of biosolids to agricultural land provides a low-cost disposal option with many potential benefits to soil. However, the practice may result in accumulations of potentially toxic heavy metals, and thus regulations are in place to limit the amount of metals applied to soil in this way. Current Australian regulations are not ideal because they are based on total metal concentrations in soils and biosolids, rather than the fraction that is ecologically available (the fraction accessible by organisms). Therefore more environmentally appropriate regulations, based on the available metal portion, need to be devised. However, before this is possible, more needs to be known about the characteristics of Australian biosolids, including the factors that influence the availability of biosolid metals. Copper is a metal of great concern because of its commonly high concentration in biosolids and because of its relatively high toxicity to certain groups of bacteria and fungi. Therefore an investigation was conducted to characterize the range of properties observed in Australian biosolids, and to determine the fraction of available metals and the factors that influence it (particularly in the case of copper). General properties such as pH, electrical conductivity, organic carbon, and total metal concentrations were measured. Availability of copper was specifically measured using isotopic exchange techniques and a Cu2+ ion-selective electrode. Results showed that total copper concentration and Cu2+ activity could be used to predict available copper. A new system of biosolid land-use regulation that incorporates the available metal fraction and a pH protection factor is proposed.

Reward comparison in chronic decerebrate rats

1997 ◽  
Vol 273 (2) ◽  
pp. R479-R486 ◽  
Author(s):  
P. S. Grigson ◽  
J. M. Kaplan ◽  
M. F. Roitman ◽  
R. Norgren ◽  
H. J. Grill
Keyword(s):  
Intertrial Interval ◽  
Short Term Memory ◽  
Daily Session ◽  
The Other ◽  
Simultaneous Contrast ◽  
High Concentration ◽  
Short Term ◽  
Term Memory ◽  
Low Concentration ◽  
Intact Rats

The simultaneous contrast paradigm was used to evaluate responsiveness to a low (0.05 M) and a high (0.5 M) concentration of sucrose under two conditions in intact and chronic decerebrate rats. In one condition the low concentration was presented on one day and the high concentration on another. In the other condition presentation of the two concentration was alternated within the same daily session. In each case there was a total of 40 trials/day during which the stimulus was delivered intraorally for 2 s at a rate of 1.5 ml/min with a 30-s intertrial interval. The results showed that the intact rats always licked more for the high than for the low concentration of sucrose but that the magnitude of the effect was larger when given the opportunity to compare the two concentrations within the same daily session. The decerebrate rats produced a similar pattern, but the concentration effect was evident only when the stimuli were alternated within the same daily session. These data stand as the first evidence that the isolated caudal brain stem is adequate for the expression of a behavior that depends on comparison processes involving short-term memory.

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