Influence of Molybdenum in Drinking Water or Feed on Copper Metabolism in Cattle—A Review

Thorndyke, Meghan P; Guimaraes, Octavio; Kistner, M. J.; Wagner, J.J.; Engle, T. E.

doi:10.3390/ani11072083

Cited by 7 publications

(1 citation statement)

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“…Nitrates, sulfates, microbial contamination, and excessive cations are water contaminants that can negatively impact beef cattle production [1,2]. As described by Thorndyke et al, certain locations within the Rocky Mountain region in the USA have natural rock formations or human activity that can contribute to elevated concentrations of molybdenum (Mo) in surface and/or groundwater that may impact livestock performance [3]. Elevated dietary Mo concentrations have been reported to reduce copper (Cu) status in ruminants [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Long-term Molybdenum Exposure in Drinking Water on Molybdenum Metabolism and Production Performance of Beef Cattle Consuming a High Forage Diet

Thorndyke

Guimaraes

Medrado³

et al. 2023

Biol Trace Elem Res

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Fifty-four multiparous beef cows with calves were used to evaluate the effects of Mo source (feed or water) on reproduction, mineral status, and performance over two cow-calf production cycles (553 days). Cows were stratified by age, body weight, liver Cu, and Mo status and were then randomly assigned to one of six treatment groups. Treatments were (1) negative control (NC; basal diet with no supplemental Mo or Cu), (2) positive control (NC + Cu; 3 mg of supplemental Cu/kg DM), (3) NC + 500 µg Mo/L from Na2MoO4·2H2O supplied in drinking water, (4) NC + 1000 µg Mo/L of Na2MoO4·2H2O supplied in drinking water, (5) NC + Mo 1000-water + 3 mg of supplemental Cu/kg DM, and (6) NC + 3.0 mg of supplemental Mo/kg diet DM from Na2MoO4·2H2O. Animals were allowed ad libitum access to both harvested grass hay (DM basis: 6.6% crude protein; 0.15% S, 6.7 mg Cu/kg, 2.4 mg Mo/kg) and water throughout the experiment. Calves were weaned at approximately 6 months of age each year. Dietary Cu concentration below 10.0 mg Cu/kg DM total diet reduced liver and plasma Cu concentrations to values indicative of a marginal Cu deficiency in beef cows. However, no production parameters measured in this experiment were affected by treatment. Results suggest that Mo supplemented in water or feed at the concentrations used in this experiment had minimal impact on Cu status and overall performance.

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