African Health Sciences
Makerere University Medical School
Vol. 15, No. 3, 2015, pp. 993-998
Bioline Code: hs15135
Full paper language: English
Document type: Research Article
Document available free of charge
African Health Sciences, Vol. 15, No. 3, 2015, pp. 993-998
© Copyright 2015 - African Health Sciences
Relationship between soil cobalt and vitamin B12 levels in the liver of livestock in Saudi Arabia: role of competing elements in soils.|
Huwait, Etimad A.; Kumosani, Taha A.; Moselhy, Said S.; Rami, Mosaoa M. & Yaghmoor, Soonham S.
Objective: This study aimed to analyze the agricultural soils from different regions in Saudi Arabia for cobalt and related
metals as Cu2+, Ni2+, Cr3+, Zn2+ and Pb2+.
Methods: Liver and muscle tissues of livestock grazing on the selected areas were analyzed for the content
of Co and vitamin B12.
Results: Our results indicated that the levels of Co in surface soil (0-15 cm) were higher than in sub-surface soil (>15 cm-
45 cm). In contrast, Pb and Zn were higher in sub-surface soil than in surface soil. A significant positive correlation existed
between the levels of Co and vitamin B12 in the liver of livestock. However, Co was not detected in muscle tissues while
vitamin B12 was present at very low levels in comparison with the levels found in the liver. The results indicated that Zn2+,
Pb2+ compete with Co in soil, which eventually affected the levels of vitamin B12 in liver.
Conclusion: It was recommended that survey of heavy metals in grazing fields of cattle should consider inclusion of
multiple elements that compete with the bioavailability of essential elements in plants and animals for the prevention of
deficiency of essential elements such as Co.
Soil, vitamin B12, cobalt, cattle, uptake, transfer