What question did this study set out to answer?

This research aims to understand how different sources of trace minerals affect ruminal bacterial diversity and cattle performance during seasonal transitions.

May 3, 2026

Trace mineral source affects ruminal bacterial diversity and performance of grazing Bos indicus Nellore cattle during the dry-to-rainy transition season.

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Authors

ICIorrano A CidriniMontana State University RMRodrigo S MarquesVirginia Tech ALArnaldo C LimedeVirginia Tech

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Implication

Randomized trial evaluates ruminal diversity and performance of Nellore cattle with different trace mineral sources, suggesting HTM as beneficial.

Key Points

This research aims to understand how different sources of trace minerals affect ruminal bacterial diversity and cattle performance during seasonal transitions.
Two experiments with Nellore cattle are conducted: Exp. 1 with 8 steers fitted with ruminal cannula, and Exp. 2 with 120 bulls; both are assigned to treatments with different mineral sources.
Cattle receive supplements containing either Cu sulfate and Zn oxide (ITM) or hydroxychloride sources (HTM) and are evaluated over 101 days including adaptation and measurement periods.
Ruminal fluid samples are analyzed for bacterial diversity, and body weight is recorded at specified intervals.
No treatment differences in total SCFA or other fermentation parameters (P ≥ 0.13).
HTM steers show higher SR1 phylum abundance (P = 0.03) and increased abundance of fiber and starch degraders compared to ITM.
HTM bulls demonstrate greater BW after 60 days and higher average daily gain (ADG) between days 30 and 60 (P ≤ 0.03).

Cite This Study

Cidrini et al. (2026) studied this question.

synapsesocial.com/papers/69f6e5cf8071d4f1bdfc6701 https://doi.org/10.1093/jas/skag146

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Implication

Randomized trial evaluates ruminal diversity and performance of Nellore cattle with different trace mineral sources, suggesting HTM as beneficial.

Trace mineral source affects ruminal bacterial diversity and performance of grazing Bos indicus Nellore cattle during the dry-to-rainy transition season.

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Implication

Key Points

Cite This Study

Trace mineral source affects ruminal bacterial diversity and performance of grazing Bos indicus Nellore cattle during the dry-to-rainy transition season.

Discussion

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Implication

Key Points

Cite This Study

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