What question did this study set out to answer?

This study aims to assess the effects of injectable trace minerals on physiological responses in calves and early-lactation cows during critical life stages.

August 5, 2026DairyOpen Access

Effect of Injectable Trace Minerals in Pasture-Based Dairy Cattle: Responses in Calves and Early-Lactation Cows

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Authors

MAMohammad Javed AsharThe University of Melbourne PGP. A. Gonzalez-RivasThe University of Melbourne FDFrank R. DunsheaCommonwealth Scientific and Industrial Research Organisation

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Implication

Randomized trial evaluates injectable trace minerals' effects on growth and health in dairy cattle, indicating limited benefits.

Key Points

This study aims to assess the effects of injectable trace minerals on physiological responses in calves and early-lactation cows during critical life stages.
Evaluated calves (n=30) receiving either isotonic saline (control) or injectable trace minerals at birth.
Monitored 50 early-lactation cows (n=50) before fixed-time artificial insemination for various health and production metrics.
Conducted analyses on erythrocyte glutathione peroxidase activity and plasma trace mineral concentrations.
In calves, glutathione peroxidase activity was significantly higher in the ITMS group (359 U/g Hb vs. 322 U/g Hb; p < 0.01).
Plasma selenium concentrations were elevated on day 15 in ITMS calves (0.62 µmol/L vs. 0.57 µmol/L; p = 0.03) and in multiparous cows (1.09 µmol/L vs. 1.04 µmol/L; p = 0.03).
No significant enhancements were observed in overall growth, health, production, or fertility.

Cite This Study

Ashar et al. (2026) studied this question.

synapsesocial.com/papers/6a72e7e2226790f37065729f https://doi.org/10.3390/dairy7040060

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Effect of Injectable Trace Minerals in Pasture-Based Dairy Cattle: Responses in Calves and Early-Lactation Cows

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Cite This Study

Effect of Injectable Trace Minerals in Pasture-Based Dairy Cattle: Responses in Calves and Early-Lactation Cows

Discussion

Member takes

Implication

Key Points

Cite This Study

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