In the quest for sustainable and antibiotic-free poultry production, researchers in Thailand are turning to local plants as a promising alternative to conventional growth promoters. A recent systematic review published in *Veterinary World* (translated as “World of Veterinary Medicine”) highlights the potential of hydrolyzable tannins (HTs) from Thai plants to revolutionize poultry feed supplements. Led by Tanakamol Mahawan of Akkhraratchakumari Veterinary College at Walailak University, the study underscores the dual benefits of these plant-derived compounds: enhancing gut health and reducing reliance on imported tannins.
The global shift toward antibiotic-free poultry production has created a pressing need for sustainable alternatives. Hydrolyzable tannins, known for their antimicrobial, antioxidant, and gut-modulatory effects, have emerged as a viable solution. However, the dependence on imported tannins from temperate species has posed challenges for tropical producers, particularly in Thailand. Mahawan’s research aimed to evaluate locally available Thai plant species as alternative sources of HTs, focusing on their biological activities, economic feasibility, and practical integration potential.
The systematic review, conducted between 2020 and 2024, analyzed 21 studies covering 24 plant species. The findings revealed that gallic and ellagic acids were the predominant bioactive compounds in these plants. HT-rich extracts demonstrated strong antimicrobial effects against 19 pathogenic bacterial species and promoted the growth of beneficial gut microbiota, including Lactobacillus spp. and Faecalibacterium prausnitzii. Among the top candidates identified were Manihot esculenta (cassava) and Senna siamea (Siamese cassia), which stood out for their bioactivity and economic feasibility.
“Our study highlights the potential of Thai plants as a sustainable and cost-effective solution for poultry feed supplements,” said Mahawan. “By leveraging local resources, we can reduce the dependency on imported tannins and support the growth of the poultry industry in a more environmentally friendly manner.”
The research also noted that while in vivo studies were limited, they supported the positive impact of these HT-rich plants on gut health in broilers. However, the authors emphasized the need for standardized extraction protocols and large-scale in vivo trials to validate efficacy, optimize dosage, and ensure feed safety.
The implications of this research are significant for the poultry industry and sustainable agriculture. By utilizing locally available plants, producers can enhance the health and productivity of their flocks while reducing costs and environmental impact. The study published in *Veterinary World* not only provides a scientific foundation but also paves the way for future developments in the field of poultry nutrition and sustainable agriculture.
As the global demand for antibiotic-free poultry continues to grow, the findings from Mahawan’s research offer a promising path forward. By integrating Thai plants into poultry feed supplements, the industry can achieve greater sustainability and economic viability, ultimately benefiting both producers and consumers.