Optimizing low-protein diets with edible dock powder: Integrated effects on growth performance, slaughter quality, Organ weights, Muscle quality, and Cecal microbiota in growing Sanhua geese

文献类型： 外文期刊

第一作者： Wang, Xianze

作者： Wang, Xianze;Wang, Huiying;Liu, Yi;Li, Guangquan;Yang, Yunzhou;Wang, Cui;Gong, Shaoming;He, Daqian;Chen, Shufang;Jia, Huiyan

作者机构：

关键词： Native Chinese goose; Dietary protein reduction; Rumex K-1; Growth efficiency; Gut microbiota

期刊名称：POULTRY SCIENCE （ 影响因子：4.2； 五年影响因子：4.5 ）

ISSN： 0032-5791

年卷期： 2024 年 103 卷 12 期

页码：

收录情况： SCI

摘要： This study evaluated the effects of supplementing low-protein diets with Edible Dock Powder (EDP) on the growth performance, slaughter traits, serum biochemical parameters, muscle quality, and cecal microbiota of Sanhua geese. A total of 288 healthy, five-week-old Sanhua geese were randomly assigned to six dietary treatments in a 3 x 2 factorial design, with three crude protein levels (16.00 %, 14.50 %, and 13.00 %) and two levels of EDP supplementation (0 % and 2.50 %). Two-way ANOVA and Duncan's multiple range test were used for statistical analysis. EDP supplementation significantly increased average daily gain (ADG) and improved feed-to- gain ratio (F/G) during both growth phases (P<0.01). Lower protein levels significantly reduced average daily feed intake ( ADFI ) and increased the apparent digestibility of gross energy ( ADGE ) (P<0.01). EDP significantly improved slaughter rate and eviscerated yield (P<0.05), while reducing liver weight and webbed feet yield (P<0.01). Reduced protein levels decreased serum globulin (GLB) and increased blood urea nitrogen (BUN) levels (P<0.05), with significant interactions between protein levels and EDP supplementation (P<0.05). EDP also significantly altered the cecal microbiota composition, reducing the relative abundance of Actinobacteria, Megamonas, and Collinsella (P<0.05), and affecting KEGG pathways related to protein modification and secondary metabolite degradation (P<0.05). In conclusion, EDP supplementation in low-protein diets improved growth performance, slaughter characteristics, and cecal microbiota, showing potential as a sustainable feed additive for reducing environmental impact and improving the economic efficiency of poultry production.

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