Dietary supplementation with different alternative to in-feed antibiotic improves growth performance of broilers during specific phases

文献类型： 外文期刊

第一作者： Tian, Yuhu

作者： Tian, Yuhu;Zhang, Jingyan;Li, Jianxi;Li, Fenghua;Wang, Anguo;Yang, Zhiqiang

作者机构：

关键词： Key words; Bacillus subtilis; Astragalus membranaceus; enzyme; aureomycin; broiler

期刊名称：POULTRY SCIENCE （ 影响因子：4.4； 五年影响因子：4.4 ）

ISSN： 0032-5791

年卷期： 2023 年 102 卷 10 期

页码：

收录情况： SCI

摘要： The effects of substituting Bacillus subti-lis, Astragalus membranaceus, and enzymes for aureomy-cin to improve the growth performance of broilers during specific phases were studied to develop alternatives to in-feed antibiotics and decrease drug residues in meat food and antibiotic resistance. Six hundred one-day-old broilers were randomly assigned to 5 groups. Broilers in the control group were supplied with basal diets (CT), and those in the remaining 4 groups were supplied with feed containing aureomycin premix (AU), B. subtilis powder (BS), A. membranaceus root powder (AM), and enzyme compound powder (EN), respectively. Compared to the control group, broilers in the other groups exhibited better growth performance during different phases. Microbial analysis of cecal contents suggested that treatment with BS or EN significantly increased the abundance of Lactobacillus or Bifidobacteria but inhib-ited Escherichia coli or Clostridium welchii; however, these bacteria were suppressed by AU treatment except C. welchii. The digestibility of the feed in vitro was signifi-cantly enhanced by adding BS or EN to the feed, consis-tent with findings for growth performance. In conclusion, dietary supplementation with 3 additives could improve the growth performance of broilers during specific phases. Future studies should focus on designing suitable sched-ules to partially replace in-feed antibiotics.

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