Effects of Dietary Cinnamaldehyde Supplementation on Growth Performance, Serum Antioxidant Capacity, Intestinal Digestive Enzyme Activities, Morphology, and Caecal Microbiota in Meat Rabbits
文献类型： 外文期刊
作者： Chen, Dongjin 1 ; Lan, Yuxiang 2 ; He, Yuqin 4 ; Gao, Chengfang 1 ; Jiang, Bin 1 ; Xie, Xiping 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Anim Husb & Vet Med, Fuzhou 350013, Peoples R China
2.Fujian Agr & Forestry Univ, Coll Anim Sci, Fuzhou 350003, Peoples R China
3.Fujian Key Lab Anim Genet & Breeding, Fuzhou 350013, Peoples R China
4.Longyan Univ, Key Lab Fujian Univ Prevent Vet Med & Biotechnol, Longyan 364012, Peoples R China
关键词： meat rabbit; cinnamaldehyde; growth performance; digestive enzymes; intestinal morphology; caecal microbiota
期刊名称：ANIMALS （ 影响因子：2.7； 五年影响因子：3.2 ）
ISSN： 2076-2615
年卷期： 2025 年 15 卷 15 期
页码：
收录情况： SCI
摘要： Cinnamaldehyde (CA) is a potential substitute for antibiotic growth promoters in animal breeding. In this study, we investigated its effects as a dietary supplement on growth performance, serum antioxidant capacity, intestinal digestive enzyme activities, intestinal morphology, and caecal microbiota in meat rabbits. Weaned meat rabbits (n = 450) were randomly assigned to five groups, Groups A, B, C, D, and E, and fed 0, 50, 100, 150, and 200 mg/kg CA diets, respectively, for 47 days. Biological samples including serum (antioxidants), duodenal/caecal content (enzymes), intestinal tissue (morphology), and caecal digesta (microbiota) were collected at day 47 postweaning for analysis. Groups C and D showed significantly higher final body weights than Group A, with Group D (150 mg/kg CA) demonstrating superior growth performance including 11.73% longer duodenal villi (p < 0.05), 28.6% higher microbial diversity (p < 0.01), and 62% lower diarrhoea rate versus controls. Digestive enzyme activity as well as serum antioxidant capacity increased with increasing CA dose, Microbiota analysis revealed CA increased fibre-fermenting Oscillospiraceae (+38%, p < 0.01) while reducing Ruminococcaceae (-27%, p < 0.05). Thus, dietary CA supplementation at 150 mg/kg was identified as the optimal CA dose for improving meat rabbit production. These findings highlight CA as a functional feed additive for promoting sustainable rabbit production.
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