| Titles |
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English :
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Effect of chelating agent EDTA (disodium salt) as feed additive on controlling heavy metals residues in Sarotherodon galilaeus fish
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Arabic :
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اثر اضافة مادة مخلبية EDTA كأضافات غذائية للتقليل من نسب المعادن الثقيلة في اسماك البلطى الجاليلى
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| Abstract |
The study was undertaken in order to determine the effect of the chelating agent EDT A as feed additive on controlling heavy metals (Pb&Cd) which cause some dangerous diseases. Its impact on growth performance, feed and protein utilization, carcass composition and biochemical parameters in mono sex Galilee Tilapia fingerlings were also studied.
Galilee tilapia fingerlings were collected from El-Zaheria village, Abo- Hamad, Sharkia (recorded as polluted area) and analyzed for lead, cadmium and zinc contamination at the start of experiment. The fish were divided into 5 treatments EDTA (ethylene diamine tetra acetic acid, disodium salt) were included in the diets at a rate of 0.0, 0.5, 1.0, 1.5 and 2.0%. The diets were formulated to be iso-nitrogenous (30.19% ± 0.15 crude protein) and iso-caloric (4459.49± 85 kcal gross energy/kg diet).
then, the fish were randomly distributed into 15 aquaria (5 fish/aquarium) of Galilee Tilapia fingerlings, each diet treatment was applied to triplicate groups (54.2± 0.99 g/fish) at a rate of six days of the week and the experiment has been extended for 49 days.
The obtained results showed that, lead (Pb) and cadmium (Cd) concentrations were significantly decreased in all EDTA treatments in the whole body and fish muscle of Galilee Tilapia fingerlings compared with those at the start of the experiment and control group (El, 0.0% EDT A).
The biochemical parameters were significantly improved at (P< 0.05). The uric acid and cholesterol levels were significantly decreased. The highest weight gain (WG), average daily gain (ADG), and specific growth weight (SGR) and protein and nutrient utilization at (P<0.05) were recorded by E4 (1.5% EDTA) followed by E3 (1.0% EDTA), respectively.
In conclusion the addition of EDT A to contaminated fish with heavy metals, reduced significantly Pb and Cd levels. The obtained results showed that all the tested biochemical parameters and growth performance, protein, nutrient utilization body carcass were improved due to EDT A application and the effects were more pronounced at 1.5% EDTAI kg diet, which are considered as the optimum dose that improve the healthy status and growth parameters of fish in this experiment.
Keywords: EDT A, heavy metals Galilee Tilapia fmgerlings, growth performance, feed utilization, biochemical parameters.
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| Publication year |
2012
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| Pages |
145-156
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| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| serial title |
Egyptian Journal of Aquatic Biology & Fisheries
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| ISSN |
1110-1131
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Feed conversion efficiency.
Heavy metals.
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| Proposed Agrovoc |
biochemical parameters;EDT A;Galilee Tilapia fmgerlings;growth performance;feed additivies;
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| Publication Type |
Journal
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