Abstract
The present study examines blood metals levels and health parameters in dairy cows reared in areas around a Pb–Zn industrial complex located near the city of Zanjan-Iran. Blood samples (n = 27) were collected from cows reared around the smelter. Blood samples (n = 25) were also collected from cows reared in areas where chances of Pb contamination of soil, water and fodder do not exist, to serve as reference. The mean blood Pb level in cows around the smelter (1.09 ± 0.26 µg/mL) was higher than the cows from the reference area (0.72 ± 0.25 µg/mL). Hematocrit (PCV) levels decreased in cows reared in the near of smelter (24.37 % ± 2.22 %) compared to the reference site (27.54 % ± 2.87 %). Hemoglobin (Hb) concentration and mean corpuscular Hb concentration value in cows from the area around the smelter were statistically lower than the cows reared in reference area. Activities of alanine transaminase and aspartate aminotransferase (IU/l) were significantly higher in cows around the smelter as compared to reference animals.
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The authors acknowledge the financial support of University of Tehran for this research under Grant Number 02/06/27628.
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Mohajeri, G., Norouzian, M.A., Mohseni, M. et al. Changes in Blood Metals, Hematology and Hepatic Enzyme Activities in Lactating Cows Reared in the Vicinity of a Lead–Zinc Smelter. Bull Environ Contam Toxicol 92, 693–697 (2014). https://doi.org/10.1007/s00128-014-1270-1
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DOI: https://doi.org/10.1007/s00128-014-1270-1