Heavy metal concentrations in bovine tissues (muscle, liver and kidney) and their relationship with heavy metal contents in consumed feed

Ecotoxicology and Environmental Safety
Majid Hashemi

Abstract

Toxic (lead, cadmium and mercury) and essential trace (copper and zinc) metals were measured in muscle, liver and kidney samples of bovine and their relationships with heavy metal concentrations in consumed feed were studied. A total of 216 tissue samples from 72 cows and 216 feed samples from 18 farms were collected during four seasons and analyzed for heavy metals by inductively coupled plasma-optical emission spectrometry after wet digestion. The arithmetic mean concentrations (mg/Kg wet weight) of lead (Pb), cadmium (Cd) and mercury were respectively, 0.221, 0.028 and 0.003 in muscle, 0.273, 0.047 and 0.002 in liver and 0.244, 0.114 and 0.003 in kidney. All measured concentrations (with the exception of Pb in muscle) were below the European Union maximum residual limits (MRL). The Cd contents of the kidney were significantly higher than which observed in other tissues. Although, copper (Cu) and zinc (Zn) levels in all of samples were below MRL, but results showed that many cattles may be suffering from Cu and/or Zn deficiency. Significant and positive correlations between Pb (p < 0.05, r = 0.163) and Cd (p < 0.01, r = 0.303) concentrations in feed and studied organs were observed. As a considerable amount of metals above MR...Continue Reading

Citations

Oct 8, 2019·Food Additives & Contaminants. Part B, Surveillance·Majid Hashemi
Jun 16, 2019·Environmental Science and Pollution Research International·Kou-Kou TangRui-Feng Fan
Mar 27, 2021·Environmental Science and Pollution Research International·Jiajia XueChangzheng Cui
Jul 19, 2021·Biological Trace Element Research·Zahra SarlakMilad Rouhi

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