Indicators of Lead Exposure in Cattle and Sheep
The aim of this work was to study the significance of blood lead,zinc-protoporphyrins and hair lead concentrations as a parameters of lead exposure in cattle and in sheep.Two heiffers FFPN and a group of five ewes received lead orally at a dose of 2.3 mg/kg/d for 17 weeks and 62 days respectively in cattle and ewes.In addition a control farm and five farms in a polluted area were used; in each farm fives cattles were chosen randomly.In cattle blood lead concentrations reached 360 μg/l threshold from which the manifestations of toxicity may occur.whereas it reached 122 μg/l in ewes.After the end of exposure the blood lead levels decreased in a biexponential-like manner and were higher than the measured before the exposure period.The lead concentrations were 0.70 ± 0.3 mg/kg in first sampling and 0.9 ±0.2 mg/kg four months later in hair bovine located in rural area.Besides,hair lead levels were higher in urban area.from 4.2 ±1.2 mg/kg(first sampling)and 13±3.5 mg/kg(four months later)which suggest that the animals were under influence of anthropogenic activities.
lead exposure blood hair zinc-propotoprphyrins cattle ewes
Sellaoui S Mehennaoui S Afri-Mehennaoui F Z Kadi M F
Environment Health and Animal Productions Laboratory(ESPA),Institute Veterinary and Agricultural Sci Biology and Environment Laboratory(LBE),Ecology Department,Constantine University,Algeria
国际会议
XVIth International Congress on Animal Hygiene(第十六届动物卫生国际会议(ISAH 2013))
南京
英文
604-607
2013-05-05（万方平台首次上网日期，不代表论文的发表时间）