文献类型： 外文期刊

作者： Bao, Hongduo ¹ ; Xue, Yongqiang ² ; Zhang, Yingying ¹ ; Tu, Feng ³ ; Wang, Ran ¹ ; Cao, Yu ² ; Lin, Yong ⁴ ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, Key Lab Food Qual & Safety Jiangsu Prov, State Key Lab Breeding Base, Nanjing 210014, Peoples R China

2.CALID Biotechnol Wuhan Co Ltd, Wuhan 430073, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Anim Sci, Nanjing 210014, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Agr Minist, Key Lab Agr Engn Middle & Lower Reaches Yangtze Ri, Nanjing 210014, Peoples R China

关键词： encapsulated essential oils; growth performance; intestinal morphology; barrier function; antioxidant capacity; cecal microbiota

期刊名称：ANTIOXIDANTS （ 影响因子：7.0； 五年影响因子：7.3 ）

ISSN：

年卷期： 2023 年 12 卷 2 期

页码：

收录情况： SCI

摘要： The objective of this study was to evaluate the effects of encapsulated essential oils (EOs) on the gut microbiota, growth performance, intestinal morphology, antioxidant properties and barrier function of meat-type ducks. A total of 320 male Cherry Valley ducks (1 day old), were randomly assigned to four dietary experimental groups with eight replicates of ten ducks each. The groups consisted of the CON group (basal diet), the HEO group (basal diet + EO 1000 mg/kg), the LEO group (basal diet + EO 500 mg/kg), and the ANT group (basal diet + chlortetracycline 50 mg/kg). Our findings indicated that ducks fed with EO 1000 mg/kg had greater average daily feed intake (ADFI), average daily gain (ADG), and body weight (BW) and a lower feed conversion ratio (FCR) than the other groups. The serum concentration of TG reduced in the HEO (p > 0.05) and LEO (p < 0.05) groups on day 42, while the concentration of CHOL increased with the EO concentration in the LEO (p > 0.05) and HEO (p < 0.05) groups. No differences were observed in the ileal mucosa for the activities of SOD, MPO and GSH-PX after EO dietary treatment. Dietary supplementation with EOs significantly increased the villus heights (p < 0.01) and the ratio of villus height to crypt depth (c/v) in the duodenum and jejunum of ducks. Moreover, the mRNA expressions of Claudin1 and Occludin in the jejunal mucosa were observed to be higher in the LEO and HEO groups rather than the CON and ANT groups on d 42. The alpha diversity showed that the HEO group improved the bacterial diversity and abundance. The beta diversity analysis indicated that the microbial structures of the four groups were obviously separated. EO dietary supplementation could increase the relative abundance (p < 0.01) of the Bacteroidetes phylum, Bacteroidaceae family, and Bacteroides, Desulfovibrio, Phascolarctobacterium, and Butyricimonas genera in the cecal microbiota of ducks. We demonstrated significant differences in the bacterial composition and functional potential of the gut microbiota in ducks that were fed either an EO diet or a basal diet. Therefore, supplemented EOs was found to have a positive effect on the growth performance and intestinal health of ducks, which was attributed to the improvement in cecal microbiota, intestinal morphology, and barrier function.