The Effects of Pretreated and Fermented Corn Stalks on Growth Performance, Nutrient Digestion, Intestinal Structure and Function, and Immune Function in New Zealand Rabbits.

IF 2.7 2区农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Animals Pub Date : 2025-06-12 DOI:10.3390/ani15121737

Xuying Jia, Yaohao Dun, Guoqi Xiang, Shuai Wang, Heng Zhang, Wen Zhou, Yingjun Li, Yunxiang Liang

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引用次数: 0

Abstract

This study investigates the efficacy of fermented corn straw as a viable corn substitute in rabbit diets, evaluating its impact on growth performance, intestinal health, cecal microbiota, and metabolite profiles to determine its potential for addressing corn shortages in animal husbandry. Over 35 days, 120 New Zealand rabbits were assigned to four treatments: (i) 12% corn (C100), (ii) 6% corn + 6% fermented straw (FS50), (iii) 12% fermented straw (FS100), and (iv) 6% corn + 6% dry straw (DS50). Fermented straw enhanced the rabbits' average daily feed intake (ADI) and average daily gain (ADG) and elevated cecal cellulase activity. It also downregulated TLR4 in the jejunum mucosa, upregulated MUC2 in the ileum mucosa, strengthened the intestinal barrier, and reduced the diarrhea index and incidence in weaned rabbits. Specific microbial families influenced amino acid and phospholipid concentrations, altering the cecal metabolic environment. In summary, replacing corn with fermented corn straw in rabbit diets significantly boosts ADG and ADI, potentially lowers the feed-to-gain ratio, and enhances cecal microbiota and metabolite profiles without compromising growth performance.

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玉米秸秆预处理和发酵对新西兰兔生长性能、营养物质消化、肠道结构和功能及免疫功能的影响

本研究探讨了发酵玉米秸秆作为可行的玉米替代品在家兔饲粮中的有效性，评估了其对生长性能、肠道健康、盲肠微生物群和代谢物谱的影响，以确定其解决畜牧业玉米短缺问题的潜力。试验时间35 d， 120只新西兰兔分为4个处理：(i) 12%玉米（C100）、（ii） 6%玉米+ 6%发酵秸秆（FS50）、（iii） 12%发酵秸秆（FS100）和（iv） 6%玉米+ 6%干秸秆（DS50）。发酵秸秆提高了家兔的平均日采食量（ADI）和平均日增重（ADG），提高了盲肠纤维素酶活性。下调空肠黏膜TLR4，上调回肠黏膜MUC2，增强肠道屏障，降低断奶家兔腹泻指数和发生率。特定的微生物家族影响氨基酸和磷脂浓度，改变盲肠代谢环境。综上所述，在不影响生长性能的前提下，用发酵玉米秸秆代替玉米可显著提高家兔的平均日增重和平均摄食量，降低料重比，改善盲肠菌群和代谢物分布。

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来源期刊

Animals Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

4.90

自引率

16.70%

发文量

3015

审稿时长

20.52 days

期刊介绍： Animals (ISSN 2076-2615) is an international and interdisciplinary scholarly open access journal. It publishes original research articles, reviews, communications, and short notes that are relevant to any field of study that involves animals, including zoology, ethnozoology, animal science, animal ethics and animal welfare. However, preference will be given to those articles that provide an understanding of animals within a larger context (i.e., the animals'' interactions with the outside world, including humans). There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental details and/or method of study, must be provided for research articles. Articles submitted that involve subjecting animals to unnecessary pain or suffering will not be accepted, and all articles must be submitted with the necessary ethical approval (please refer to the Ethical Guidelines for more information).