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This is a risk assessment for 6 mineral contaminants and 4 essential minerals. A total of 1466 samples were collected from 18 product categories during 2010 to 2018. The 18 product categories were divided into 11 finished feed (689 samples) categories and 7 feed ingredient categories (777 samples). Mineral and vitamin/minerals mixes (565 samples) were the predominant products in the 7 feed ingredient categories, and beef cattle feed (351 samples) was the predominant product in the 11 finished feed categories. Samples from the 18 product categories were analyzed for up to 10 minerals: arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb), molybdenum (Mo), mercury (Hg), nickel (Ni), selenium (Se), and thallium (Th). Cr, Cu, Mo, and Se are essential nutrients, and the other 6 are contaminats. The ratios of mean concentrations of the 6 inorganic contaminants across the 11 finished feeds were low compared to the 7 feed ingedients categories. This implies that the risk of toxicity from the potential carryover of the 6 contaminants from feed ingredients to finished feeds is low. The mean Cu concentrations were high and the mean Mo concentrations were low in the 4 finished feed categories for ruminants (cattle, sheep, and goats). The ideal copper:molybdenum (Cu:Mo) ratio is >6:1 and <10:1 in the 4 finished feed categories for ruminants. The calculated Cu:Mo ratio of 26:1 shows a nutritional imbalance between Cu and Mo that is likely to cause Cu toxicity.
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Sep 1, 2020
Herrman, Timothy J., 2020, "Replication Data for Risk Assessment of Copper and Molybdenum and Other Minerals in Feed Ingredients and Finished Feeds",, Texas Data Repository, V1
This file contains the data used in the paper listed above. The sample data used in the paper was collected by the Office of the Texas State Chemist in the state of Texas from various manufacturers and distributors.
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