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Published on: October 29, 2021
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Evaluation of Trace Mineral Sources
1Department of Animal Science, North Carolina State University, Raleigh, NC 27695-7621, USA.
Summary
Trace mineral bioavailability varies by source type, with organic and hydroxychloride forms generally superior to inorganic. Ensuring consistent mineral intake through individual dosing is crucial for animal health.
Area of Science:
- Animal Nutrition
- Trace Mineral Metabolism
Background:
- Dietary trace minerals are essential for animal health and productivity.
- Various sources exist, including inorganic, organic, and hydroxychloride forms, each with differing characteristics.
Purpose of the Study:
- To compare the bioavailability and effects of different trace mineral sources in animal diets.
- To evaluate the impact of trace mineral source on fiber digestibility in ruminants.
- To assess methods for ensuring consistent trace mineral intake.
Main Methods:
- Review of existing research on trace mineral bioavailability.
- Comparison of inorganic, organic, and hydroxychloride trace mineral forms.
- Analysis of studies investigating fiber digestibility in ruminants fed different mineral sources.
- Evaluation of supplementation strategies like free-choice versus individual dosing.
Main Results:
- Inorganic copper and manganese bioavailability can vary.
- Organic and hydroxychloride trace minerals are generally more bioavailable than inorganic sources.
- Ruminants fed sulfate trace minerals exhibit lower fiber digestibility compared to those receiving hydroxychloride or organic forms.
- Individual dosing (rumen boluses, injectables) guarantees consistent trace mineral intake per animal.
Conclusions:
- Trace mineral source significantly impacts bioavailability and animal performance.
- Hydroxychloride and organic trace minerals offer potential advantages over inorganic forms.
- Consistent trace mineral delivery through individual dosing is more reliable than free-choice supplements.
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