scholarly journals Growth performances and bioaccumulation of heavy metals in Anabas testudineus (Bloch, 1792) cultured using different market feeds

2019 ◽  
Vol 47 (1) ◽  
pp. 77-88
Author(s):  
Kaniz Fatema ◽  
Md Nazmus Sakib ◽  
Md Al Zahid ◽  
Nahid Sultana ◽  
Md Rakibul Hassan
Keyword(s):  
Heavy Metals ◽  
Average Daily Gain ◽  
Human Consumption ◽  
Feed Conversion ◽  
Anabas Testudineus ◽  
Commercial Fish ◽  
Growth Performances ◽  
Metal Levels ◽  
Cultured Fish ◽  
Fish Feeds

The study was conducted to determine growth performances and bioaccumulation of Cr, Cu, Cd, Pb and Ni in fish organs such as intestines, muscle and gills of study species after culturing them for twelve weeks by using different commercial fish feeds. The highest average daily gain (ADG, g/day) and specific growth rate (SGR; %/day) were found in fish fed quality feed and lowest values were found in the fish fed mega feed. Best feed conversion ratio (FCR) value was found in fish fed quality feed among five different feeds. In cultured Koi, the concentration of heavy metals were found higher than initial concentration in fish feeds and collected fingerling samples. Heavy metal levels in cultured fish was Cu > Pb > Cr > Cd > Ni and levels of bioaccumulation in individual organs was intestines > gills > muscle. The concentration of Cu, Pb and Cr exceed the tolerable limit approved by FAO in fishes cultured with the experimental feeds. Considering the present study, Koi cultured with these experimental feeds may not safe for human consumption. Bangladesh J. Zool. 47(1): 77-88, 2019

scholarly journals Bioaccumulation of heavy metals in Nile tilapia Oreochromis niloticus (Linnaeus 1758) fed with commercial fish feeds

2017 ◽  
Vol 29 (2) ◽  
pp. 89-99
Author(s):  
Md Iqbal Hossain ◽  
Badhan Saha ◽  
Mahmuda Begum ◽  
Nusrat Jahan Punom ◽  
Mst Khadiza Begum ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Oreochromis Niloticus ◽  
Harmful Effect ◽  
Human Consumption ◽  
Feed Concentration ◽  
Allowable Limit ◽  
Commercial Fish ◽  
Metal Levels ◽  
Fish Feeds ◽  
Commercial Feeds

The study was carried out to determine the concentration of heavy metals in some commonly used commercial fish feeds and to observe the bioaccumulation of Cr, Cu, Cd and Ni in liver, muscle and gills of tilapia Oreochromis niloticus after culturing them for 60 days by feeding those commercial feeds. The study revealed that the concentration of Cu was the highest (65.08 mg/kg) in handmade feed (B1) among four heavy metals. The concentrations of Cr in collected feeds were 1.75 to 3.04 mg/kg, which exceeds the permissible limit set by FAO. In cultured tilapia, the concentrations of studied heavy metals were found higher than initial concentration in fish feeds and in tilapia fingerlings. Metal levels in cultured fish followed the ranking of Cu>Cr>Ni>Cd and order in individual organs was liver>gill>muscle. The highest concentration of Cu (72.86 mg/kg) was found in liver given S feed and the lowest concentration (0.67 mg/kg) was in muscle receiving Q feed. Bioaccumulation of Cr was the highest (23.95 mg/kg) in liver taken B1 feed and the lowest (9.29 mg/kg) in muscle of tilapia cultured with C feed. Concentration of Cu exceeded the tolerable limit in fishes cultured with S and C feeds. But Cr concentration surpassed the allowable limit in every feed studied. The concentrations of Ni and Cd were below the permissible range approved by FAO. Considering the present study, tilapia cultured with these experimental feeds is not safe for human consumption. Higher concentration of these heavy metals exceeding allowable limit may cause harmful effect on human body after consumption of those fishes and can create cancer and other diseases in human body.Bangladesh J. Sci. Res. 29(2): 89-99, December-2016

scholarly journals Keban Baraj Gölü Örencik Mevkiinden (Elazığ) Yakalanan Capoeta trutta’nın Kas Dokusundaki Bazı Ağır Metal Düzeylerinin Karşılaştırılması

2021 ◽  
Vol 9 (7) ◽  
pp. 1250-1257
Author(s):  
Özgür Canpolat ◽  
Metin Çalta
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Muscle Tissue ◽  
Fish Species ◽  
Human Consumption ◽  
Potential Health ◽  
Fish Samples ◽  
Metal Levels ◽  
Biological Aspects ◽  
The Relationship

Keban Dam Lake is the second largest dam lake in Turkey. In addition, it has the feature of being one of the most important dam lakes in our country in terms of both aquaculture potential and electricity generation. In this study, fish samples belong to Capoeta trutta caught from Örencik region of Keban Dam Lake were used. The concentrations of some heavy metals (copper, iron, zinc, chromium, nickel, cadmium, arsenic and mercury) in muscle of Capoeta trutta and the potential health risk from consumption of this fish species were examined. In addidion, the relationship between the heavy metal levels and some biological aspects of fish (weight, length and sex) were determined. As a result of the study, it was determined that the most and the least accumulated heavy metals in the muscle tissue of Capoeta trutta were zinc and cadmium respectively. The concentration of heavy metals showed differences according to weight, length and sex of fish. The results were found indicated that heavy metal levels in the muscle tissue of Capoeta trutta are below the tolerable values recommended by EPA, WHO and FAO. Therefore, there is not any risk for human consumption of this fish species.

scholarly journals Occurrence of Fungi and Mycotoxins in Fish Feeds and Their Impact on Fish Health

2019 ◽  
Vol 2019 ◽  
pp. 1-17 ◽  
Author(s):  
Esther Marijani ◽  
Emmanuel Kigadye ◽  
Sheila Okoth
Keyword(s):  
Developing Countries ◽  
Fish Mortality ◽  
Fish Nutrition ◽  
Human Consumption ◽  
Plant Origin ◽  
Feed Conversion ◽  
Farmed Fish ◽  
Mycotoxin Contamination ◽  
Fish Feeds ◽  
Mycotoxigenic Fungi

The rapid population growth in developing countries has led to strong pressure on capture fisheries. However, capture fisheries have reached their maximal limits of fish production and are supplemented by farmed fish. The growth in aquaculture has led to high demand for fish feeds, which play a very important role in fish nutrition and health. Use of animal protein in fish feeds is expensive; hence, a majority of farmers from developing countries use local feed ingredients from plant origin as a source of dietary protein. However, these ingredients of plant origin provide the best natural substrates for fungi, which can be easily accompanied by mycotoxin development under suitable conditions. The locally made feed comprises ingredients such as soybeans, cottonseed cake, and wheat and maize bran which are mixed together and ground after which the compounded feed is pelleted and stored. Among the ingredients, maize and oilseeds are more susceptible for mycotoxigenic fungi compared to other ingredients. The outcomes of mycotoxin contamination in fish feeds are not different from other animal species intended for human consumption, and they are directly associated with production losses, particularly decreased weight gain and feed conversion, impaired immune system and reproductive performance, and increased fish mortality. Fish may also carry mycotoxin residues along the food chain, thus compromising human health. Hence, it is important to ensure the control of mycotoxin contamination in fish feeds, especially during the production and storage.

scholarly journals Effects of salinity changes on growth performance and survival of climbing perch, Anabas testudineus (Bloch, 1795)

2016 ◽  
Vol 25 (1) ◽  
pp. 65-73
Author(s):  
Faijun Nahar ◽  
Wahida Haque ◽  
Dewan Ali Ahsan ◽  
Md Ghulam Mustafa
Keyword(s):  
Growth Rate ◽  
Growth Performance ◽  
Specific Growth ◽  
Control Group ◽  
Feed Conversion ◽  
Average Growth Rate ◽  
Anabas Testudineus ◽  
Average Growth ◽  
Climbing Perch ◽  
Cultured Fish

An experiment was carried out to find the salinity tolerance capability and growth performance of Climbing Perch, Anabas testudineus (Bloch, 1795). Anabas testudineus commonly cultured fish in Bangladesh was reared in laboratory conditions at different salinities of 0, 3, 6, 9, 12, 15, 18 and 21‰ for 60 days. Hundred per cent survivals were detected at 0, 3, 6 and 9‰ salinity while 100% mortality was recorded at 18 and 21‰ salinity. Various responses to threat and feeding were observed among the fish in different treatments. Lowest feed conversion ratio was found in the control group while the highest was detected at 15‰ salinity. On the other hand, decreasing trend of specific growth and average growth rate were observed in A. testudineus fingerlings from 0 to 15‰ salinity. Significantly higher specific growth rate and average growth rate were detected in A. testudineus fingerlings reared at 0 - 6‰ salinity (p < 0.05). The present study suggests that Climbing Perch fingerlings can be reared at fresh water growth rates in coastal water with salinity up to 6‰.Dhaka Univ. J. Biol. Sci. 25(1): 65-73, 2016

scholarly journals Ranking of Four Types Fodder as Sole Diet Considering Biological Characteristics and Growth of Local Growing Bulls

2019 ◽  
pp. 1-9
Author(s):  
Khan Shahidul Huque ◽  
Biplob Kumer Roy ◽  
Nazmul Huda
Keyword(s):  
Cost Efficiency ◽  
Production Efficiency ◽  
Block Design ◽  
Average Daily Gain ◽  
Biological Characteristics ◽  
Feed Conversion ◽  
Arithmetic Average ◽  
Randomized Block Design ◽  
Growth Performances ◽  
Daily Gain

Aims: In this experiment, evaluation of intake, digestibility and growth performances of local growing bulls by feeding Jumbo-green, Para and German grass based on Index (Mf) of Maize are considered and ranked this fodder accordingly. Study Design:  Completely randomized block design. Place and Duration of Study: Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka, between July 2016 and September 2016. Methodology: Biomass production efficiency (Xddm), animal production efficiency (Xap), CH4 emission deduction efficiency (XCH4) and benefit to cost efficiency (Xbc) was considered to identify the biological characteristics of four fodders. Statistical analysis was done through SPSS-17 to evaluate the intake, digestibility and growth of animal. Rank of each fodder was calculated through the equation of Maize index (Mi) = (Xddm + Xap + XCH4 + Xbc)/4. Results: Aggregation of four arithmetic average efficiency; Jumbo-green, Para and German got 0.42, 0.40 and 0.72 point out of 1.0 point of Mi, respectively. Among four fodders German grass performed best in terms of average daily gain (107 gm/d) and feed conversion ratio (46.9) compared to maize silage (64 gm/d & 58.4, respectively). Weight loss of bulls fed Jumbo and Para has occurred unexpectedly. Conclusion: In combination of mathematical calculation and statistical evaluation, the rank of four fodders measured as Maize>German>Jumbo-green>Para.

scholarly journals Heavy metals concentration and histopathological profile of some commercial fish species at Makoko Slum Neighbourhood Environment, Lagos, Nigeria

2019 ◽  
Vol 4 (1) ◽  
pp. 1-10
Author(s):  
Simeon O. Ayoola
Keyword(s):  
Heavy Metals ◽  
Fish Species ◽  
Water Body ◽  
World Health ◽  
Human Consumption ◽  
Neighbourhood Environment ◽  
Commercial Fish ◽  
Lead Zinc ◽  
The Mean ◽  
Mean Concentration

Potentially harmful substances such as pesticides, heavy metals, and hydro chemicals are often released into the aquatic environment. The objective of the present study was to assess the concentration of lead, copper, cadmium, chromium, and nickel in water samples from two different points (Mid-stream and downstream), also determine the levelsof Lead, Zinc, Manganese and copper in four commercially important fish species, Pseudotolithus senegalensis (croaker fish) and Ethmalosa fimbriata (bonga), Oreochromis mossambicus (Tilapia fish) and Bagrus bayad (silver catfish) from Makoko water body, Yaba, Lagos, Nigeria. Histopathological profile of the fish species selected was also examined. The results were compared to the World Health Organization (WHO) acceptable limit.The concentrations of the heavy metals were analyzed using Perkin Atomic Absorption Spectrophotometer (AAS). Pseudotholithus senegalensishad 3.01±0.02, 2.41±0.02, 3.48±0.01, 1.04±0.10 mg kg-1as the mean concentration of lead, zinc, manganese, and copper respectively, while E. fimbriatahad 1.06±0.02, 2.41±0.02, 4.14±0.01, 1.04±0.10 mg kg-1,O. mossambicushad 2.09±0.02, 3.11±0.04, 2.48±0.02, 0.62±0.01 mg kg-1and B. bayadhad 1.53±0.12, 3.61±0.05, 2.44±0.03, 0.66±0.01 mg kg-1 as the mean concentration of these metals in the tissues of these fishes. The concentrations of heavy metals were higher in the gills compared to other organs. The mean concentration of each heavy metal were varied significantly (p0.05) depending on the species of fish. In the histological analysis of the tissues, there was vacuolation of hepatocytes, inflammation, and necrosis. In the muscle, there was a mild lesion, necrosis, inflammation, and cellular degenerations. But the level of tissue and organ degeneration is more severe in the gills. The study showed that some levels of these metals were within the permissible recommended allowed limit for human consumption. It is concluded that Makoko Lagoon water body and fishes are heavily contaminated with heavy metals.

scholarly journals Природні детоксиканти в раціоні та їх вплив на продуктивність і якість продуктів забою свиней на відгодівлі

2017 ◽  
Vol 7 (2) ◽  
pp. 239-246
Author(s):  
L.S. Dyachenko ◽  
T.L. Syvyc ◽  
O.M. Tytariova ◽  
O.A. Kuzmenko ◽  
V.V. Bilkevich
Keyword(s):  
Heavy Metals ◽  
Human Life ◽  
Average Daily Gain ◽  
Environmental Safety ◽  
The Body ◽  
Cadmium Content ◽  
Feed Conversion ◽  
Animal Products ◽  
Young Pigs ◽  
Beet Pulp

<p> </p><p>Among the pollutants one of the main factor is heavy metals. Cadmium, a typical representative of this group has a very toxic effect on both the animal and the human. It is not involved in the vital processes of living organisms. Instead, exceeding the maximum permissible levels of cadmium has negative affects on animal, and accumulation in the tissues, is a threat to human life - the consumer of animal products. The results of research show efficiency of dry apple pulp and dry beet pulp as natural detoxicant of heavy metals, including cadmium, in the body of young pigs. Experimentally proved that the cadmium content in complete feed with the maximum permissible level (1 mg/kg) predetermined decrease of average daily gain of pigs experimental group, compared with the control, by 10.8% and increase of feed conversion by 9.8%. The introduction to the mixed fodder of dry apple pulp (45 g/kg) or dry beet pulp (45 g/kg) with of the same cadmium content contributed that the productivity of animals, the cost of feed for 1 kg of growth, slaughter weight, carcass yield, weight mascara and economic efficiency of fattening young pigs approaching to the level of control. In addition, the use of dry apple pulp and dry beet pulp as natural forage detoxicant in diets of young pigs helps significantly (P &lt;0.05-0.001), reduction of heavy metals, including cadmium in products of slaughter (meat, bacon, liver, kidney, heart), which increases their purity, environmental safety and competitiveness.</p>

scholarly journals Growth and Yield Performance of Chingi, Heteropneustes fossilis and Koi, Anabas testudineus in Bangladesh under Semi-Intensive Culture Systems

2013 ◽  
Vol 2 (2) ◽  
pp. 15-24 ◽  
Author(s):  
BK Chakraborty ◽  
NN Nur
Keyword(s):  
Economic Status ◽  
Stocking Density ◽  
Growth And Yield ◽  
Total Biomass ◽  
Heteropneustes Fossilis ◽  
Feed Conversion ◽  
Anabas Testudineus ◽  
Commercial Fish ◽  
The People ◽  
Mean Differences

Production potential of shingi, Heteropneustes fossilis and koi, Anabas testudineus in polyculture were assessed at a stocking density of 2, 47,000 and 3, 70,500 ha-1, respectively in treatment T1 and T2. Monoculture of H. fossilis and A. testudineus was designed at a stocking density of 2, 47,000 ha-1 in treatment T3 and T4, respectively. Culture period of shingi was 120 days and koi was 100 days in all treatments. All fingerlings were of the same age at stocking, with a mean weight of 2.54±0.08 g for shingi and 0.50±0.01 g for koi, respectively. Commercial fish feeds (30.0% crude protein) supplied at the rate of 100 to 5% of total biomass twice daily. Fish production in treatment T1, T2, T3 and T4 were 18,803±111, 12,388±115, 10,042±5 kg ha-1 day-120 and 22,176±7 kg ha-1 day-100, respectively. The feed conversion ratio (FCR) was significantly (P<0.05) lower in T4 than that of the other three treatments. The net financial benefits incurred from treatment T1, T2, T3 and T4 were Bangladeshi Taka 17,65,769; 6,691; 15,83,990 and 16,29,409 BDT ha-1, respectively. The mean differences of gross yields and net benefits among different treatments were significant (P<0.05). The polyculture technology of shingi and koi, and monoculture technology of koi may help to meet the dietary needs and improve the socio-economic status of the people of Bangladesh.DOI: http://dx.doi.org/10.3329/ijarit.v2i2.14010 Int. J. Agril. Res. Innov. & Tech. 2 (2): 15-24, December, 2012

scholarly journals Fractionation of heavy metals in yellow latosol cultivated with vegetables

2018 ◽  
Vol 39 (5) ◽  
pp. 1921
Author(s):  
Laércio Santos Silva ◽  
Izabel Cristina de Luna Galindo ◽  
Vinícius Augusto Filla ◽  
Romário Pimenta Gomes ◽  
Milton César Costa Campos ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Matter ◽  
Heavy Metal Contamination ◽  
Soil Samples ◽  
Chemical Fractionation ◽  
Human Consumption ◽  
Native Forest ◽  
Metal Levels ◽  
Toxic Potential

Sequential extraction or chemical fractionation of heavy metals allows inferences to be made about their origin, occurrence, bioavailability, toxic potential and environmental contamination. Thus, the present study aimed to assess the distribution of Cu, Mn, Ni, Pb and Zn among the different soil fractions and landscape compartments of a yellow latosol cultivated with vegetables. Soil samples were collected from five areas cultivated with tomato (Lycopersicon esculentum, Mill.), lettuce (Lactuca sativa), chili pepper (Capsicum annuum L.) and chard (Beta vulgaris L.) in different slope positions (upper, middle, lower), and four reference areas (native forest), at a depth of 0.00 - 0.20 m. Heavy metal levels were also assessed in water used to irrigate the crops and for human consumption by collecting 200 ml of water samples from reservoirs. The soil samples were sequentially fractionated to quantify the concentrations of adsorbed Cu, Mn, Ni, Pb and Zn in the exchangeable (EF), organic matter (OF), amorphous and crystalline iron oxide fractions (AFeOx and CFeOx). Landscape position only interfered significantly in heavy metal adsorption in the soil for Cu and Ni associated with CFeOx and Zn bound to the EF in the farming areas. The highest Cu, Ni, Pb and Zn levels were found in the fractions with less stable chemical bonds (bound to organic matter), in addition to a strong affinity between Cu, Zn and Mn and the oxide fractions (AFeOx + CFeOx). The low affinity of Pb and Ni for the AFeOx and CFeOx fractions indicates greater contamination potential for the water reservoirs. In the short term, organic matter is the main source of remediation for heavy metal contamination in soil, making it important to adopt conservation practices aimed at reducing OM losses.

Zinc, cadmium, copper, and manganese in species of finfish and shellfish caught in the Derwent Estuary, Tasmania

1974 ◽  
Vol 25 (2) ◽  
pp. 209 ◽  
Author(s):  
IJ Eustace
Keyword(s):  
Heavy Metals ◽  
Feeding Habits ◽  
Marine Species ◽  
Commercial Fish ◽  
Muscle Tissues ◽  
Metal Levels ◽  
Abnormal Accumulation ◽  
Zinc Cadmium ◽  
River Derwent ◽  
Food Regulations

Thirty-nine marine species, including members of the Teleostorni and Elasmobranchii, were obtained from the River Derwent and analysed for four heavy metals known to be accumulated by certain species, particularly molluscs. Of the muscle tissues from edible Teleostomi and Elasmobranchii all contained levels of zinc, cadmium, and copper well below the maximum levels permitted by current Tasmanian food regulations. Manganese levels were also low. Small species differences for zinc and copper levels in muscle tissue are evident among these finfish. These are probably attributable to differences in feeding habits. Comparison of the metal levels in these species with levels reported by various overseas workers indicate no abnormal accumulation of heavy metals in muscle tissues. With some minor exceptions no relationships existed between the tissue metal levels and length of the fish. Two edible species of molluscs, the native oyster and the common mussel, contained much higher levels of the four metals. For both species levels of zinc and cadmium exceeded the levels specified by the food regulations. The data presented indicate that the ability of molluscs to accumulate certain metals, particularly zinc and cadmium, to abnormally high levels is not shared by finfish species. The fact that elevated metal concentrations in seawater are not reflected in the muscle tissues of finfish means that the monitoring of commercial fish species caught in the River Derwent would provide a much less sensitive index of pollution than would the monitoring of oysters or mussels.

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