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芽孢杆菌益生菌、阿维拉霉素及其组合在混合谷物肉鸡日粮中的性能、肠道形态和微生物学效应

Performance, gut morphology and microbiology effects of a Bacillus probiotic, avilamycin and their combination in mixed grain broiler diets.

作者信息

Wealleans A L, Sirukhi M, Egorov I A

机构信息

a Danisco Animal Nutrition , DuPont Industrial Biosciences , Marlborough , UK.

b Danisco Animal Nutrition , DuPont Industrial Biosciences , Moscow , Russia.

出版信息

Br Poult Sci. 2017 Oct;58(5):523-529. doi: 10.1080/00071668.2017.1349298. Epub 2017 Jul 10.

Abstract
  1. This study aimed to determine the effect of avilamycin (AGP) and a multi-strain Bacillus probiotic (DFM) on the performance, gut histology and microbiology of broilers fed on a mixed grain diet. 2. A total of 800 chicks were allocated to four treatments: a control diet, control+AGP, control+DFM, or control+AGP+DFM. Bodyweight, feed intake and FCR were measured at d 0, 21 and 42. Samples were taken at d42 to determine villus height (VH), crypt depth (CD) and ratio (VH:CD). Mucosal E. coli and Lactobacilli counts were measured at d42. 3. At d42, DFM and AGP+DFM significantly increased weight over the control, with AGP returning an intermediate value. FCR followed a similar pattern. DFM and AGP+DFM significantly increased VH and CD in all gut sections compared to the control. 4. DFM and AGP+DFM reduced E. coli counts compared to control, with AGP reducing caecal counts only, while Lactobacilli counts were increased. 5. Divergent histology and microbiology between treatments highlight the different modes of action of AGP and DFM for improving broiler growth and feed efficiency.
摘要
  1. 本研究旨在确定阿维拉霉素(AGP)和多菌株芽孢杆菌益生菌(DFM)对以混合谷物日粮喂养的肉鸡生产性能、肠道组织学和微生物学的影响。2. 总共800只雏鸡被分配到四种处理组:对照日粮、对照+AGP、对照+DFM或对照+AGP+DFM。在第0、21和42天测量体重、采食量和料重比。在第42天采集样本以测定绒毛高度(VH)、隐窝深度(CD)和比值(VH:CD)。在第42天测量黏膜大肠杆菌和乳酸杆菌数量。3. 在第42天,DFM和AGP+DFM组的体重显著高于对照组,AGP组体重处于中间值。料重比呈现类似模式。与对照组相比,DFM和AGP+DFM显著增加了所有肠道段的VH和CD。4. 与对照组相比,DFM和AGP+DFM降低了大肠杆菌数量,AGP仅降低了盲肠大肠杆菌数量,而乳酸杆菌数量增加。5. 各处理组之间不同的组织学和微生物学特征突出了AGP和DFM在改善肉鸡生长和饲料效率方面的不同作用模式。

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