中国畜牧兽医 ›› 2022, Vol. 49 ›› Issue (2): 510-520.doi: 10.16431/j.cnki.1671-7236.2022.02.012

• 营养与饲料 • 上一篇    下一篇

微生态制剂调控比格幼犬生长性能和肠道菌群的研究

王志华, 贾俊鹏, RADEBE Stoffel Matjeke, 庾庆华   

  1. 南京农业大学动物医学院, 南京 210018
  • 收稿日期:2021-08-06 发布日期:2022-01-27
  • 通讯作者: 庾庆华 E-mail:yuqinghua1981@njau.edu.cn
  • 作者简介:王志华,E-mail:784460842@qq.com
  • 基金资助:
    中央高校基本科研业务费专项资金(JCQY202106)

Study on the Growth Performance and Intestinal Flora of Beagle Puppies Regulated by Probiotics

WANG Zhihua, JIA Junpeng, RADEBE Stoffel Matjeke, YU Qinghua   

  1. College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210018, China
  • Received:2021-08-06 Published:2022-01-27

摘要: 【目的】 研究复合微生态制剂对哺乳期比格幼犬生长性能与肠道菌群结构的影响。【方法】 选取12只15日龄比格犬, 随机分为对照组和微生态制剂组, 每组6只。微生态制剂组幼犬每日灌喂犬用微生态制剂20 mL, 对照组幼犬灌喂生理盐水20 mL, 于试验第0、3、9、12、15、18、21、25、28 d测量体重并计算净增重, 第28天采集全血样、血清样和粪样。全血样进行红细胞(RBC)计数和血红蛋白(HGB)浓度测定, 血清样检测碱性磷酸酶(AKP)、无机磷(IP)、总胆固醇(TCHO)、甘油三酯(TG)、免疫球蛋白A(IgA)、免疫球蛋白G(IgG)、白介素-1β(IL-1β)、脂多糖(LPS)含量; 粪样进行菌群测序, 统计Goods coverage指数、Observed species指数和Shannon指数, 对样本进行PCoA分析, 并统计各样本在门、属、种水平上的物种分布。【结果】 与对照组相比, 微生态制剂可显著提高幼犬体重(P<0.05), 显著增加血清中RBC数量及HGB、AKP和IP含量(P<0.05), 促进比格幼犬生长发育; 微生态制剂可显著降低血清TG含量(P<0.05), 但对TCHO、IgA、IgG、IL-1β、LPS含量无显著影响(P>0.05)。Observed species指数和PCoA分析结果表明, 微生态制剂可显著改变幼犬肠道菌群结构(P<0.05)。在门水平上, 微生态制剂组幼犬肠道菌群拟杆菌门和放线菌门相对丰度显著降低(P<0.05), 梭菌门、酸杆菌门和疣微菌门相对丰度均显著增高(P<0.05);在属水平上, Escherichia-Shigella、霍尔德曼氏菌属、双歧杆菌属和布劳特氏菌属相对丰度均显著降低(P<0.05), 梭菌属、链球菌属、梭杆菌属、乳球菌属和片球菌属相对丰度均显著增高(P<0.05)。在种水平上, 大肠杆菌和短双歧杆菌相对丰度均显著降低(P<0.05), 犬大肠梭菌、格氏乳球菌、Vagococcus teuberi、贝莱斯芽孢杆菌、粪肠球菌和死亡梭杆菌相对丰度均显著增高(P<0.05)。【结论】 犬用微生态制剂可显著促进幼犬生长, 提高其血氧含量, 改变肠道菌群结构, 优化肠道菌群组成。

关键词: 微生态制剂; 比格犬; 生长性能; 肠道菌群

Abstract: 【Objective】 This experiment was to explore the effects of compound probiotics on the growth performance and intestinal flora structure of Beagle puppies during lactation.【Method】 Twelve 15-day-old Beagle puppies were selected and randomly divided into control group and probiotics group, with 6 in each group.The puppies in the probiotics group were fed with 20 mL probiotic preparation daily, and the puppies in control group were fed with 20 mL normal saline.The body weight was measured and the weight gain was calculated on days 0, 3, 9, 12, 15, 18, 21, 25 and 28.Whole blood, serum and fecal samples were collected at the 28th day.Red blood cell count (RBC) and hemoglobin (HGB) concentrations were measured in whole blood samples, alkaline phosphatase (AKP), inorganic phosphorus (IP), total cholesterol (TCHO) content, triglyceride (TG), immunoglobulin A (IgA), immunoglobulin G (IgG), interleukin-1β (IL-1β), lipopolysaccharide (LPS) contents were measured in serum samples.The fecal samples were sequenced for flora, the Goods coverage index, Observed species index, and Shannon index were counted.The samples were analyzed by PCoA, and the species distribution at the phylum, genus and species levels of each sample were counted.【Result】 Compared with control group, probiotics could significantly increase the weight of puppies (P < 0.05), and significantly increase the number of RBC and the content of HGB, AKP and IP in serum (P < 0.05), and promote the growth and development of Beagle puppies.Probiotics could significantly reduce serum TG content (P < 0.05), but had no significant effect on TCHO, IgA, IgG, IL-1β and LPS (P < 0.05).Observed species index and PCoA analysis results showed that the probiotics could significantly change the structure of puppies intestinal flora (P < 0.05).At the phylum level, the relative abundance of Bacteroides and Actinobacteriota in the puppies of the microecological preparation group was significantly lower (P < 0.05), the relative abundance of Fusobacteriota, Acidobacteria and Verrucomicrobia were significantly increased (P < 0.05).At the genus level, the relative abundance of Escherichia-Shigella, Holdemanella, Bifidobacterium and Blautia was significantly reduced (P < 0.05), the relative abundance of Clostridium sensu stricto 1, Streptococcus, Fusobacteria, Lactococcus and Pediococcus was significantly increased (P < 0.05).At the species level, the relative abundance of Escherichia coli and Bifidobacterium breve was significantly decreased (P < 0.05), the relative abundance of Clostridium colicanis, Lactococcus garvieae, Vagococcus teuberi, Bacillus velezensis, Enterococcus faecium and Fusobacterium mortiferum was significantly increased (P < 0.05).【Conclusion】 The probiotics for puppies could significantly promote the growth of puppies, increase their blood oxygen content, change the structure of the intestinal flora, and optimize the composition of the intestinal flora.

Key words: probiotics; Beagle puppies; growth performance; intestinal flora

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