探讨饲养方式与儋州鸡胴体特性的关系：微生物视角。
Exploring the relationship between rearing system and carcass traits of Danzhou chicken: a microbial perspective.
机构信息
Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province 430070, China.
Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province 430070, China; Biotechnology Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.
出版信息
Poult Sci. 2024 Nov;103(11):104186. doi: 10.1016/j.psj.2024.104186. Epub 2024 Aug 8.
This study investigated the effects of free-range (FR) and cage-rearing (CR) systems on intestinal health, carcass traits, and microbial diversity in the Danzhou chicken breed. Two groups of 125 hens in each group, aged 42 wk, were reared under FR and CR systems. At 50 wk, 50 hens from each group were randomly selected for carcass analysis and 10 hens for intestinal morphology and microbiota profiling. Results indicated a significant increase in villus height (VH) in the duodenum (P < 0.05), jejunum (P < 0.01), and ileum (P < 0.001) of the CR group. Additionally, the ratio of VH to crypt depth (VR) significantly (P < 0.001) increased in the jejunum, while crypt depth (CD) decreased significantly (P < 0.001) in the same section in the CR group. Carcass traits, including dress weight (DW), eviscerated with giblet weight (EGW), eviscerated weight (EW), and leg muscle weight (LW) significantly improved (P < 0.05) in the CR group. Microbial diversity showed significant β-diversity differences, with Lactobacillus, Enterococcus, and Oxalobacteraceae as dominant biomarkers in the CR group. Conversely, Actinomycetaceae, Erysipelotrichaceae, Coriobacteriaceae, Eubacterium, Actinomyces, Scardovia, and Lachnospiraceae were dominant in the FG group. Correlation analysis showed duodenum Lactobacillus was positively correlated with VH (P < 0.05), EW (P < 0.05), and LW (P < 0.001). Jejunum Lactobacillus was positively correlated considerably with VH (P < 0.01), VR (P < 0.05), DW (P < 0.05), EGW (P < 0.01), and LW (P < 0.001). Ileum Lactobacillus was positively correlated with EGW (P < 0.01), EW (P < 0.05), and LW (P < 0.01). Aeriscardovia in duodenum was positively (P < 0.01) associated with EGW. Enterococcus in the duodenum was positively (P < 0.05) associated with EGW and in Jejunum positively correlated with VH (P < 0.05) and VR (P < 0.01). The study concludes that cage rearing improves intestinal health, carcass traits, and microbial diversity in Danzhou chickens, with Lactobacillus and Enterococcus playing key roles.
本研究旨在探讨自由放养（FR）和笼养（CR）系统对儋州鸡肠道健康、屠体性状和微生物多样性的影响。将两组各 125 只 42 周龄的母鸡分别饲养在 FR 和 CR 系统中。在 50 周龄时，每组随机选择 50 只母鸡进行屠体分析，10 只母鸡进行肠道形态和微生物组分析。结果表明，CR 组的十二指肠（P < 0.05）、空肠（P < 0.01）和回肠（P < 0.001）的绒毛高度（VH）显著增加。此外，CR 组空肠的 VH 与隐窝深度（VR）的比值显著（P < 0.001）增加，而同一部位的隐窝深度（CD）显著（P < 0.001）降低。CR 组的屠体性状，包括全净膛重（DW）、带内脏重（EGW）、全净膛重（EW）和腿肌重（LW）显著提高（P < 0.05）。微生物多样性显示出显著的β多样性差异，CR 组中乳杆菌、肠球菌和 Oxalobacteraceae 是优势生物标志物。相反，Actinomycetaceae、Erysipelotrichaceae、Coriobacteriaceae、Eubacterium、Actinomyces、Scardovia 和 Lachnospiraceae 是 FG 组的优势生物标志物。相关性分析表明，十二指肠乳杆菌与 VH（P < 0.05）、EW（P < 0.05）和 LW（P < 0.001）呈正相关。空肠乳杆菌与 VH（P < 0.01）、VR（P < 0.05）、DW（P < 0.05）、EGW（P < 0.01）和 LW（P < 0.001）呈显著正相关。回肠乳杆菌与 EGW（P < 0.01）、EW（P < 0.05）和 LW（P < 0.01）呈正相关。十二指肠中的 Aeriscardovia 与 EGW 呈正相关（P < 0.01）。十二指肠中的肠球菌与 EGW 呈正相关（P < 0.05），而空肠中肠球菌与 VH（P < 0.05）和 VR（P < 0.01）呈正相关。本研究表明，笼养可改善儋州鸡的肠道健康、屠体性状和微生物多样性，其中乳杆菌和肠球菌发挥着关键作用。
Zotero 插件