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This study aims to evaluate how maternal Vitamin A injection during late gestation affects marbling and gene expression in beef cattle.

Long-term effects of maternal Vitamin A injection during late gestation on marbling in beef cattle revealed by an early-life transcriptomic approach

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Randomized trial evaluates maternal Vitamin A impact on marbling in beef cattle, suggesting improved carcass quality.

This study aims to evaluate how maternal Vitamin A injection during late gestation affects marbling and gene expression in beef cattle.
16 pregnant Nellore cows were divided into control and Vitamin A-treated groups.
Calves were biopsied and muscle analysis was conducted at weaning and slaughter.
RNA sequencing identified differentially expressed genes and biological processes associated with Vitamin A treatment.
Marbling scores were higher in Vitamin A-treated steers (509 vs 400, P=0.06).
Muscle cell numbers showed a trend toward being greater in VA steers (53.7 vs 45.5, P=0.07).
232 differentially expressed genes were identified, impacting myogenesis and lipid metabolism.

Oliveira et al. (2026) studied this question.

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