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Abstract
This review article analyzes the effects of nutrition on puberty and reproductive performance in beef cattle in tropical and subtropical production systems. A systematic review of scientific databases (PubMed, Scopus, Web of Science, and Google Scholar) was conducted to select studies focused on nutrition, puberty, and reproductive efficiency in cattle. The results indicate that an appropriate nutritional strategy, especially energy supplementation during key growth stages, reduces the age at puberty by up to 22% and advances the first calving. This is essential to address the reproductive delay characteristic of Bos taurus × Bos indicus crosses, where puberty can occur as late as 30 months. In conclusion, appropriate nutritional management improves reproductive efficiency and promotes the sustainability of tropical livestock systems.