Exploring the Role of Edible Dock Powder (Rumex K-1) in Enhancing Growth Performance, Organ Health, and Cecal Microbiota in Sanhua Goslings

This study investigated the effects of dietary Edible Dock Powder (EDP) on growth performance, organ development, serum biochemistry, and cecal microbiota in Sanhua goslings. A total of 240 goslings were randomly allocated into four groups: one control group (Group A) and three experimental groups supplemented with EDP at concentrations of 1.00% (Group B), 2.50% (Group C), and 4.00% (Group D). Group B showed a significantly decreased feed-to-gain ratio (F/G) compared to the control group ( p < 0.05). Organ analysis indicated an increase in liver and glandular stomach weights in Groups B and C ( p < 0.05). Serum aspartate transaminase (AST) levels were significantly decreased in the EDP groups ( p < 0.05), and glucose (GLU) levels were notably lower in Groups C and D compared to the control group ( p < 0.05). Cecal microbiota analysis revealed that Group B was enriched in Prevotella and Streptococcaceae , while Cyanobacteria and Alistipes were higher in Group C. Additionally, Desulfovibrio was positively correlated with glandular stomach weight, and Oxalobacter with ADG ( p < 0.05). These findings suggest that 1.00–2.50% EDP supplementation supports growth, enhances liver and gut health, and optimizes microbiota composition, providing a viable functional feed strategy for goslings.