Twenty-four beef-type steers with an average body weight of 226 kg were allocated to four treatments and fed for 84 days to study effects of dietary aluminum on performance and mineral composition of selected tissues. Treatments included 0, 300, 600 and 1,200 ppm supplemental aluminum as aluminum chloride. Increased dietary aluminum did not affect feed consumption, body weights, or feed conversion ratios nor plasma concentrations of phosphorus, calcium, magnesium and aluminum. Hemoglobin and hematocrit were not affected by increasing dietary aluminum; likewise concentrations of aluminum, iron, manganese, phosphorus and calcium concentrations in liver, kidney, longissimus muscle and brain were not influenced by treatment. Zinc concentrations were increased in liver (P<.05) and kidney (P<.01), by added levels of dietary aluminum. Dietary aluminum at levels up to 1,200 ppm did not influence animal performance and caused only minor changes in tissue mineral composition.
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Valdivia et al. (1978) studied this question.
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