1.Levels of lead in mineral salt commercial mixtures for beef cattle.
Wilmar Sachetin MARCAL ; Paulo Eduardo PARDO ; Marcos Roberto LOPES DO NASCIMENTO ; Evandro Brandalize VERAS ; Aleksey Machado MORENO
Journal of Veterinary Science 2003;4(3):235-238
Lead concentrations was measured in samples of mineral mixtures used in beef cattle feed in the states of Sao Paulo, Parana, Mato Grosso and Mato Grosso do Sul, Brazil. Lead content was determined by inductively coupled plasma atomic emission spectrometry. Of the 60 analyzed samples, 21 had values greater than 30 ppm (range less 1.6 to 460 ppm), which is the maximum concentration recommended [3,14]. These findings show the necessity for careful industrial monitoring because some mineral mixtures contain sufficient lead to cause toxicity in animals.
Animal Feed/*analysis
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Animals
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Brazil
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*Cattle
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Dietary Supplements/analysis
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Lead/*analysis
2.Detection of Cadmium in Mineral Salt Commercial Mixtures for Beef Cattle.
Wilmar Sachetin MARCAL ; Paulo Eduardo PARDO ; Marcos Roberto LOPES DO NASCIMENTO ; Marcio LIBONI ; Marcio DE NADAI BONIN
Journal of Veterinary Science 2002;3(2):141-144
The cadmium concentrations in mineral mixtures used in beef cattle feed in the states of Sao Paulo and Parana, Brazil was measured. The cadmium concentration was determined by inductively coupled plasma atomic emission spectrometry. Of the 36 analyzed samples, 35 had values > 0.5 ppm (range 0.5 to 11.2 ppm), which is the maximum concentration recommended [4, 18]. These findings show the necessity for careful industrial monitoring, as some mineral mixtures contain sufficient cadmium to cause toxicity in animals.
Animal Feed/*analysis
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Animals
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Brazil
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Cadmium/*administration&dosage/*analysis/toxicity
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Cattle
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Minerals/*analysis
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Spectrum Analysis