Interest in phytotherapy and phytogenic additives in veterinary medicine and animal production has increased considerably, driven by the search for functional alternatives to extensive antimicrobial use and the growing emphasis on food safety. In this context, Curcuma longa L. and its main bioactive compound, curcumin, have attracted attention because of their antioxidant, anti-inflammatory, immunomodulatory and antimicrobial properties. This review synthesizes recent evidence on the use of C. longa and curcumin in veterinary medicine, with emphasis on the botanical and phytochemical basis of the plant, the main biological mechanisms involved, and reported applications in poultry, swine, ruminants, aquaculture, and companion animals. It further highlights that the interpretation of findings is strongly influenced by botanical identity, phytochemical variability, product type, standardization, dose and route of administration. Available evidence indicates promising effects on antioxidant status, intestinal health, productive performance and hepatic protection in selected experimental models. However, translation into practice remains constrained by the low oral bioavailability of curcumin, formulation heterogeneity and inconsistent reporting. Overall, C. longa represents a promising phytogenic resource, but robust veterinary recommendations require studies in target species, better characterized products and standardized experimental protocols for application.
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