Abstract
A total of 75 samples of serum, muscles, lungs, livers and kidneys of slaughtered camels (15 of each) were collected from Banha abattoir in Kalubia Governorate and they were analyzed for the presence of heavy metals (Lead, Cadmium, Copper and Zinc) by using Atomic Absorption Spectrophotometer. The obtained results indicated that the mean values of Lead concentrations in the examined samples of serum, muscle, lung, liver and kidney were 0.014 μg/ml, 0.107, 0.81, 0.66 and 0.57 mg/kg wet weight respectively. Results showed that mean concentrations of lead in lungs and livers were significantly higher (p≤0.05) than that reported in kidneys and muscles. However, the mean values of Cadmium concentrations in the examined samples of serum, muscle, lung, liver and kidney were 0.007 μg/ml, 0.07, 0.39, 0.52 and 1.28 mg/kg wet weight respectively. Significant differences (p≤0.05) in the mean concentrations of cadmium were recorded between the studied tissues as the highest mean concentration was reported in the kidneys, then in the livers, while the muscles contained the minimum mean concentration. Meanwhile, the mean values of Copper concentrations in the examined samples of serum, muscle, lung, liver and kidney were 1.29 μg/ml, 1.37, 2.75, 3.94 and 3.25 mg/kg wet weight respectively. Significant differences (p≤0.05) in the mean concentrations of Copper were recorded between the studied tissues as the highest mean concentration was reported in the liver. Whereas, the mean values of Zinc concentrations in the examined samples of serum , muscle, lung, liver and kidney were 1.96 μg /ml, 16.94, 10.68, 22.22 and 8.43 mg/kg wet weight respectively. Significant differences (p≤0.05) in the mean concentrations of Zinc were recorded between the studied tissues as the highest mean concentration was reported in the liver and muscles. All examined heavy metals were within the normal level in serum. Generally, lungs, livers and kidneys were found to have the highest significant levels of Pb and Cd and muscles the lowest levels.
Highlights
Pollution of the environment with heavy metals is a serious problem in most countries of the world
Meat is an important source of a wide range of essential trace metals for humans, but may carry toxic metals as residues, Contamination with heavy metals is a serious threats, because of their toxicity and because of bioaccumulation in the food chain (Demirezen and Uruc, 2006)
The aim of the present study was to investigate the levels of lead, cadmium, copper and zinc in serum, meat, lung, liver and kidney of camel slaughtered in Benha abattoir at Kalubia Governorate in order to detect their possible toxic levels on human health
Summary
Pollution of the environment with heavy metals is a serious problem in most countries of the world. Meat is an important source of a wide range of essential trace metals for humans, but may carry toxic metals as residues, Contamination with heavy metals is a serious threats, because of their. Kidney and liver are the tissues and organs that have a propinquity to bioaccumulate toxic metals as Cd and Pb. The residues measured in these animal organs may indicate the degree of pollution of the grazing area and drinking water (Mokgalaka et al, 2008 and Sedki et al, 2003). The aim of the present study was to investigate the levels of lead, cadmium, copper and zinc in serum, meat, lung, liver and kidney of camel slaughtered in Benha abattoir at Kalubia Governorate in order to detect their possible toxic levels on human health. Serial standard solutions were prepared for the element by using pure certified metal standard at ideal adequate strength
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