Novel probiotics: Their effects on growth performance,gut development,microbial community and activity of broiler chickens

A total of 294 one-day-old Cobb broiler chickens were used to investigate the effects of four Lactobacillus strains on gut microbial profile and production performance. The six dietary treatments, each with 7 replicates were: 1) basal diet(negative control), 2) one of four strains of Lactobacillus(tentatively identified as Lactobacillus johnsonii, Lactobacillus crispatus, Lactobacillus salivarius and an unidentified Lactobacillus sp.) and 3) basal diet with added zinc-bacitracin(ZnB, 50 mg/kg). Results showed that the addition of probiotic Lactobacillus spp. to the feed did not significantly improve weight gain, feed intake and feed conversion rate(FCR) of broiler chickens raised in cages during the 6-week experimental period,but tended to increase the number of total anaerobic bacteria in the ileum and caeca, and the number of lactic acid bacteria and lactobacilli in the caeca; and to significantly increase the small intestinal weight(jejunum and ileum). Furthermore, all 4 probiotics tended to reduce the number of Enterobacteria in the ileum, compared with the control treatments. The probiotics did not affect the p H and the concentrations of short chain fatty acids(SCFA) and lactic acid in both the ileum and caeca.     

发酵乳酸杆菌对肉鸡血清抗氧化性能及肠道挥发性脂肪酸（VFA）的影响

旨在研究添加不同剂量的发酵乳酸杆菌F-6对肉鸡血清抗氧化性能及肠道VFA含量的影响。选择健康的1日龄AA肉仔鸡240只,称重后随机分为4组,各组肉仔鸡的初始体重差异均不显著（P〉0.05）。各组肉仔鸡基础日粮一致,3个试验组在饮水中添加发酵乳酸杆菌F-6,添加剂量分别为2.0×10~5、2.0×10~6、1.0×10~7CFU/m L,对照组肉仔鸡不饲喂发酵乳酸杆菌。于21日龄及42日龄时,分别测定各组肉鸡血清中的MDA和SOD含量,以及肠道中VFA含量。结果表明：21日龄时,试验3组肉鸡血清中的SOD含量显著高于对照组（P〈0.05）;42日龄时,试验2组和3组肉鸡血清中的SOD含量也显著高于对照组（P〈0.05）。21日龄和42日龄时,各试验组肉鸡盲肠及回肠中的乙酸和总挥发性脂肪酸（TVFA）含量均显著高于对照组（P〈0.05）;除试验1组外,其他各试验组肉鸡的回肠及盲肠丁酸含量均显著高于对照组（P〈0.05）。综上提示,发酵乳酸杆菌F-6能够显著提高肉鸡的血清抗氧化性能及肠道部分VFA含量,其具有开发为新型饲料益生菌添加剂的应用前景。     

鸡源耐镉乳酸菌株的分离与鉴定

本试验旨在从鸡肠道中分离筛选出耐镉(Cd)的乳酸菌,为将其开发应用于防控家禽饲料重金属Cd污染提供理论基础。取鸡肠道内容物的样品进行乳酸菌分离,以耐受100 mg/L的Cd为标准筛选乳酸菌,采用分子生物学方法鉴定菌株。对筛选出的乳酸菌株进行生长性能、耐Cd性能及Cd吸附性能等测定。结果表明：本试验共筛选出5株耐Cd乳酸菌,分别为1株约氏乳杆菌Cd3-1和4株卷曲乳杆菌Cd1-1、Cd5-2、Cd4-5和Cd8-2。其中Cd3-1、Cd5-2和Cd8-2菌株最高可耐受1 000 mg/L的Cd,而Cd1-1和Cd4-5菌株最高可耐受400 mg/L的Cd。各菌株对50 mg/L Cd的吸附率随溶液pH的升高而增加,在pH为6.0和7.0时Cd的吸附率均显著高于pH为2.6时Cd的吸附率(P<0.05)。5株乳酸菌均可耐受0.3%的胆盐,且可抑制金黄色葡萄球菌的生长。综合上述结果,本试验从鸡肠道中分离筛选鉴定出5株耐Cd乳酸菌,包括1株约氏乳杆菌和4株卷曲乳杆菌,在pH接近中性的条件下,对Cd的吸附率可达30%。     

Assessment of dietary supplementation with probiotics on performance, intestinal morphology and microflora of chickens infected with Eimeria tenella

We evaluated the effects of dietary supplementation with different preparations of probiotics on the performance of broiler chickens experimentally infected with 2 × 10(4) sporulated oocysts of Eimeria tenella at 14 days of age. Three hundred, day-old, Cobb-500 chicks, as hatched, were separated into 10 equal groups with three replicates. Two of the groups, one challenged with E. tenella oocysts and the other not, were given a basal diet and served as controls without medication. The other challenged groups were given the anticoccidial lasalocid (60 mg/kg) or Enterococcus faecium (5 × 10(8) or 5 × 10(9)cfu/kg feed), Bifidobacterium animalis (5 × 10(8)cfu/kg feed), Lactobacillus reuteri (5 × 10(8)cfu/kg feed), Bacillus subtilis (5 × 10(8)cfu/kg feed), or a multi-species probiotic mix at 5 × 10(8) or 5 × 10(9)cfu/kg feed, respectively. The trial lasted 6 weeks. Individual body weight, feed intake per pen and feed conversion ratio values were recorded weekly, along with the extent of bloody diarrhea, excreta oocyst numbers and bird mortality. Caecal lesions were assessed and intestinal samples were taken for histopathological and bacteriological evaluation from ileum and caecum. Overall growth performance of chickens fed the multi-species probiotic mix at both levels was higher (P<0.05) compared to the infected control. Overall oocyst shedding was lowest (P<0.05) in the lasalocid supplemented group. Villous height was higher (P<0.05) in Bacillus supplemented groups compared to infected controls. The Lactobacillus supplemented group had the highest (P<0.05) numbers of both Lactobacillus and Bifidobacterium in ileum and caecum. In conclusion, dietary probiotics are promising for further investigation on improving intestinal health and growth performance of broiler chickens experimentally challenged with E. tenella.     

Evaluation of an intestinal Lactobacillus reuteri strain expressing rumen fungal xylanase as a probiotic for broiler chickens fed on a wheat-based diet

1. This study was conducted to evaluate the feasibility of using a transformed Lactobacillus reuteri Pg4 strain harbouring a rumen fungal xylanase gene as a probiotic supplement in a wheat-based poultry diet. 2. A total of 400 broiler chicks was allocated to two treatment groups with or without supplementation with 10(6) colony forming units (cfu)/g of transformed L. reuteri Pg4 in a wheat-based regimen to investigate the performance, intestinal microflora populations, digesta viscosity and excreta ammonia concentrations in these broiler chickens. 3. Supplementation of the wheat-based diet with transformed L. reuteri Pg4 decreased intestinal viscosity, caecal coliform population, and increased body weight gain and ileal villus height and crypt depth from 0 to 21 d of age. It also decreased excreta ammonia concentrations, and increased the caecal total volatile fatty acid (VFA) and lactic acid concentrations from 0 to 21 d and 22 to 37 d of age. 4. Further, it was demonstrated that 40% of the Lactobacillus cells randomly isolated from the digesta of the ileum and caecum of the supplemented group possessed xylanase secretion capability. 5. It appears reasonable to assume, therefore, that the derived benefit is a result of the organism surviving, and the associated performance of some function in the intestinal tract which benefits gut health.     

Effect of administration of Lactobacillus crispatus,Clostridium lactatifermentans and dietary lactose on the development of the normal microflora and volatile fatty acids in the caeca of broiler chicks

1. Lactobacillus crispatus and Clostridium lactatifermentans, both isolated from the caeca of chickens, grown together in an in vitro model system are able to ferment lactose to acetate and propionate. In this study, the capabilities of these organisms were studied in vivo. 2. The effect on concentrations of volatile fatty acids and lactate, together with the development of some bacterial groups in the caeca of chicks, was studied after oral inoculation with L. crispatus and C. lactatifermentans together with dietary lactose. For this purpose, chicks were divided into 4 groups: (i) control group, (ii) dietary lactose, (iii) L. crispatus and C. lactatifermentans, and (iv) dietary lactose together with L. crispitaus and C. lactatifermentans. 3. In general, concentrations of (undissociated) volatile fatty acids in the caeca were not significantly different in broilers receiving both bacteria and dietary lactose compared with control broilers. Concentrations of lactate in the caeca of 14-d-old broilers treated with any of the three treatments were significantly higher than in the caeca of control broilers. 4. This indicates that L. crispatus or other lactate-producing organisms were responsible for the elevated concentrations of lactic acid. Clostridium lactatifermentans has probably not colonised the caeca sufficiently to ferment this lactate further to acetate and propionate. 5. Numbers of Enterobacteriaceae and enterococci in the caeca of broilers receiving both bacteria and dietary lactose were not different from control broilers. 6. We conclude from these results that under the conditions applied in this study a mixture of L. crispatus and C. lactatifermentans with dietary lactose was able to increase lactate concentrations but was unable to increase concentrates of acetate and propionate in the caeca of broiler chicks.     

发酵乳酸杆菌F6对鸡小肠上皮细胞β-防御素-9基因表达的影响

采用实时荧光定量PCR（fluorescence quantitative PCR,FQ-PCR）检测益生性发酵乳酸杆菌F6刺激鸡小肠上皮细胞后抗菌肽β-防御素-9（AvBD9）基因表达变化,为从益生菌与上皮细胞抗菌肽表达关系的新角度解析益生菌发挥益生作用的新途径和机制提供一定的基础及依据。利用不同剂量（2×105,2×106,2×107 CFU）的发酵乳酸杆菌F6分别刺激原代培养的鸡小肠上皮细胞4h,提取刺激后的细胞总RNA,反转录为cDNA,FQ-PCR检测抗菌肽AvBD9基因表达变化。结果表明,未受刺激的正常对照组也检测到AvBD9mRNA的表达,发酵乳酸杆菌F6能上调AvBD9基因表达。刺激组中AvBD9mRNA的表达在不同剂量组之间存在差异。2×105 CFU/mL组AvBD9mRNA的表达量极显著高于未受细菌刺激的对照组和2×106 CFU/mL组（P〈0.01）,显著高于2×107 CFU/mL组（P〈0.05）。2×106 CFU/mL组和2×107 CFU/mL组AvBD9mRNA的表达量显著高于未受细菌刺激的对照组（P〈0.05）,但2×106 CFU/mL组和2×107 CFU/mL组之间无显著差异（P〉0.05）。发酵乳杆菌F6与鸡小肠上皮细胞相互作用过程中可提高抗菌肽AvBD9mRNA的表达,且存在剂量依赖性。     

Delivery routes for probiotics: Effects on broiler performance,intestinal morphology and gut microflora

Four delivery routes, via, feed, water, litter and oral gavage, were examined for their efficacy in delivering a novel probiotic of poultry origin, Lactobacillus johnsonii, to broilers. Seven treatments of 6 replicates each were allocated using 336 one-day-old Cobb broiler chicks. The treatments consisted of a basal diet with the probiotic candidate, L. johnsonii, added to the feed, and three treatments with L. johnsonii added to the drinking water, sprayed on the litter, or gavaged orally. In addition, a positive control treatment received the basal diet supplemented with zinc-bacitracin(Zn B, 50 mg/kg). The probiotic strain of L.johnsonii was detected in the ileum of the chicks for all four delivery routes. However, the addition of L.johnsonii as a probiotic candidate did not improve body weight gain, feed intake and feed conversion ratio of broiler chickens raised on litter during the 5-week experimental period regardless of the route of administration. The probiotic treatments, regardless of the routes of delivery, affected(P 0.05) the pH of the caecal digesta and tended(P = 0.06) to affect the p H of the ileal digesta on d 7, but the effect disappeared as the birds grew older. All probiotic treatments reduced the number of Enterobacteria in the caeca on d 21, and tended(P 0.054) to reduce it in the ileum and caeca on d 7 and in the ileum on d 21 compared with the controls. The probiotic also tended to increase the number of lactic acid bacteria and lactobacilli in the ileum and caeca on d 7, but this trend was not evident on d 21. The trend appeared most pronounced when the probiotic was delivered orally or via litter. The probiotic also decreased(P 0.05) the population of Clostridium perfringens rapidly from an early age to d 21 in the caeca, leading to a3-fold decrease in the number of C. perfringens between d 7 and 21. It also showed that the probiotic treatment presented the lowest number of C. perfringens in the caeca. Delivery of the probiotic through feed, water and litter increased(P 0.01) the weight of the pancreas on d 21, but the probiotic did not affect other morphometric parameters of the gut. Furthermore, the probiotic did not affect the p H and the concentrations of short chain fatty acids and lactic acid in either the ileum or caeca.     

不同来源乳酸菌的分离与鉴定

Six strains of Lactobacillus were isolated from traditional indigenous dairy products, piglet’s feces and chicken intestine, designated as LS, LT, LJ1, LJ2, LZ1 and LZ2， respectively. Identifications were done according to bacteria morphology, physiological and biochemical properties,16S rDNA sequence homology analysis, and their characteristics were researched. The results showed that LS, LT, LJ1 and LZ2 strains were Lactobacillus brevis, LJ2 strain was Enterococcus faecium, LZ1 strain was Lactobacillus acidophilus. All of the six strains had obvious bacteriostasis effect on Listeria monocytogenes, Salmonella typhimurium, Escherichia coli and Staphylococcus aureus.     

Lactobacillus fermentum F6的增殖培养基优化及高密度发酵的研究

对分离自少数民族传统乳制品中的Lactobacillus fermentum F6菌种的增殖培养基进行优化,并对其高密度发酵条件进行探索。通过测定不同组成培养基中菌体在600nm波长下的光密度和发酵液在不同发酵条件下的活菌数,得到最适增殖培养基配方及其高密度发酵条件。增殖培养基配方为:蔗糖62.0g/L、酵母粉35.5g/L、大豆蛋白胨12.0g/L、柠檬酸1.35g/L、柠檬酸钠22g/L、MgSO4·7H2O2g/L、MnSO4·5H2O100mg/L、Tween-801g/L。在5L发酵罐中,Lactobacillus fermentum F6经优化发酵条件,其活菌数可达到2.30×1010CFU/mL,加入保护剂经冷冻干燥后活菌数可达到1.45×1011CFU/g,存活率为79.11%。中试培养液中活菌数可达1.02×1010CFU/mL,存活率为58%。以上优化的增殖培养基和高密度发酵条件为Lactobacillus fermentum F6的工业化生产奠定了基础。     

Effect of extracted galactoglucomannan oligosaccharides from pine wood (Pinus brutia) on Salmonella typhimurium colonisation,growth performance and intestinal morphology in broiler chicks

1. An in vitro and in vivo study was conducted to evaluate the fermentability of isolated galactoglucomannan oligosaccharides (GGMs) and the influence of their feeding on shedding and colonisation of Salmonella typhimurium, growth performance and intestinal morphology in broiler chicks.

2. The in vitro data demonstrated that three probiotic lactic acid bacteria namely Lactobacillus casei, L. plantarum and Enterococcus faecium were able to ferment the extracted oligosaccharides and other tested sugars on a basal de Man Rogosa Sharpe media free from carbohydrate.

3. For the in vivo experiment, 144 one-d-old male Ross 308 broiler chicks were divided into 6 experimental treatments (with 4 replicates) including two positive and negative controls which received a basal maize-soybean diet without any additives, supplementation of three levels of isolated GGMs (0.1%, 0.2% and 0.3%) and a commercial mannanoligosaccharide (MOS) at 0.2% to the basal diet. All birds except those in the negative control group were challenged orally with 1 × 10⁸ cfu of S. typhimurium at 3-d post-hatch.

4. The results revealed that challenge with S. typhimurium resulted in a significant reduction in body weight gain, feed intake, villus height, villus height to crypt depth ratio and villus surface area in all of infected chicks. Birds that were given GGMs or MOS showed better growth performance, increased villus height and villus surface area and decreased S. typhimurium colonisation than the positive control birds. GGM at 0.2% level was more effective than the other treatments in improving growth rate as well as gut health of broiler chicks.

     

一株新饲用乳杆菌的分离鉴定及益生性研究

从猪粪便中分离得到一株新饲用乳杆菌,对其16S rDNA基因进行了测序,该段基因序列已提交GenBank,登录号为HQ641209。将该菌株16S rDNA基因序列进行在线BLAST比对并与其他乳杆菌属菌株的16S rDNA序列建立系统发育树,结果显示该菌16S rDNA序列与NCBI公布的约氏乳杆菌Lactobacillus johnsonii (AB295648)的同源性为99.7%,因此该菌鉴定为约氏乳杆菌(Lactobacillus johnsonii),将其命名为"Lactobacillus johnsonii Sun001"。经测试,该菌株对E.coli K88、K99菌株的生长有抑制作用,在pH为2.5的模拟胃液中处理3 h存活率为68.8%,在0.3%胆盐浓度的模拟肠液中处理3 h存活率为21.4%。     

植物乳酸杆菌对感染沙门氏菌蛋鸡血浆生化、免疫水平及沙门氏菌定植的影响

本试验旨在研究植物乳酸杆菌对感染肠炎沙门氏菌蛋鸡血浆生化、免疫水平及沙门氏菌定植的影响。将400只京红1号商品代蛋鸡随机分成4个处理组,每组5个重复,每个重复20只鸡。A组和C组饲喂基础饲粮,B组和D组在基础饲粮添加2×10~8 CFU/g植物乳酸杆菌。饲喂1周后,C组和D组连续2 d口服1×10~10CFU/m L肠炎沙门氏菌菌液,A组和B组口服等量无菌PBS溶液,饲养3周。结果表明:添加植物乳酸杆菌可显著提升总蛋白、球蛋白水平(P0.05),显著降低低密度脂蛋白和甘油三酯(P0.05);添加植物乳酸杆菌可显著增加IgM、IgG(P0.05);蛋鸡感染沙门氏菌的第14天和第21天及试验全程,添加植物乳酸杆菌显著减少盲肠食糜中肠炎沙门氏菌拷贝数(P0.05)。综上可知,日粮中添加植物乳酸杆菌可改善感染肠炎沙门氏菌蛋鸡的血浆生化指标,缓解炎症损伤,降低盲肠沙门氏菌定植数量,保障机体健康。     

A multi-microbe probiotic formulation processed at low and high drying temperatures: effects on growth performance,nutrient retention and caecal microbiology of broilers

1. Two experiments were conducted to evaluate a multi-microbe probiotic formulation processed at low (LT) or high (HT) drying temperature.

2. In both the experiments, 640 d-old Ross male chicks were randomly allotted to 4 treatments on the basis of initial BW for 35 d experiments.

3. In experiment one, dietary treatments were a negative control (NC; basal diet without any antimicrobial); positive control (PC; basal diet +10?mg/kg avilamycin); basal diet with 0·3% probiotic LT; and basal diet with 0·3% probiotic HT.

4. Improved overall weight gain, FCR and retention of CP were observed in birds fed the PC and probiotic diets when compared with birds fed the NC diet. At d 21, birds fed the probiotic and NC diets had more caecal Bifidobacterium and total anaerobes than birds fed the PC diet; while birds fed the PC and probiotic diets had fewer caecal Clostridium than birds fed the NC diet at d 35.

5. In experiment two, a 2?×?2 factorial arrangement of treatments was employed to evaluate the effects of two concentrations of probiotic HT (0·30 or 0·60%) and avilamycin (0 or 10?mg/kg).

6. Birds fed the 0·60% probiotic HT diet showed improved overall weight gain and CP retention, higher Lactobacillus and Bifidobacterium in the caecum, and reduced Clostridium and coliforms in the caecum. Inclusion of avilamycin improved the overall weight gain and feed intake, and reduced the caecal Clostridium and Bifidobacterium population.

7. In conclusion, high drying temperature had no effect on the efficacy of the multi-microbe probiotic formulation; while the probiotic HT formulation was more effective at the 0·60% level. Moreover, inclusion of avilamycin improved performance of birds but did not have any interaction with probiotics.     

猪源乳酸杆菌的安全性及抗逆性评价

对本实验室自行分离自猪肠道的3株乳酸杆菌进行安全性和抗逆性检测,采用体外法对分离自不同生理阶段猪(仔猪、生长肥育猪、母猪)肠黏膜和食糜的罗伊乳杆菌(Lactobacillus reuteri)LA5、植物乳杆菌(L.plantarum)L47和约氏乳杆菌(Ljohnsonii)L63进行生长特性、溶血性、有害代谢产物、...     

Effect of a potential probiotics Lactococcus garvieae B301 on the growth performance,immune parameters and caecum microflora of broiler chickens

In this study, a novel Lactococcus garvieae B301 was isolated from the intestinal tract of a healthy piglet. L. garvieae B301 was tolerant to acid pH, simulated gastric and small intestinal transit juices, indicating that it was capable of surviving in the gastrointestinal tract. L. garvieae B301 was safe and beneficial to broilers, as broiler chickens supplemented with L. garvieae B301 had lower diarrhoea incidence and mortality than the Control. Moreover, supplementation of broiler diets with L. garvieae B301 resulted in an increase in body weight and the number of caecum lactic acid bacteria and Bifidobacterium spp., and decrease in feed‐to‐gain ratio and the number of caecum coliforms. It also had a positive effect on the thymus index and bursa of Fabricius index and enhanced serum levels of immune globulins. All these results showed that L. garvieae B301 could enhance the growth performance of broiler chickens and improve their health. Thus, L. garvieae B301 could be a promising feed additive for broiler chickens.     

乳杆菌FGM9菌株对小鼠毒性作用研究

评价乳杆菌FGM9菌株对昆明种小鼠的一般毒性作用。将80只小鼠随机分为8组,设两个阴性对照,分别灌胃和腹腔注射实验菌株,灌胃剂量分别为4.5×109、4.5×107和4.5×105CFU/mL,注射剂量分别为5.2×109、5.2×107和5.2×105CFU/mL,连续7 d记录小鼠的一般体征、中毒及死亡情况。结果各组小鼠均无死亡,未见任何毒性反应,健康体征均为Ⅰ级,各实验组体重变化与对照组相比无显著差异;各组小鼠未见任何异常病变,脏器系数与对照组相比亦无显著差异(P0.05),血液学指标正常。表明乳杆菌FGM9菌株对小鼠无不良影响。     

玉米、豆粕和麦麸抽提物对4株猪源乳酸杆菌耐酸能力的影响

采用模拟胃酸环境,检测饲料原料玉米、豆粕和麦麸抽提物对4株猪源乳酸杆菌耐酸性能的影响。结果表明:在pH 2.5模拟胃酸环境中处理3 h,约氏乳酸杆菌JJB3、SNZ10,罗伊氏乳酸杆菌MNZ8、KNZ4分别经90、30、60 min和30 min完全失活。添加豆粕和麦麸抽提物后,4株乳酸杆菌在pH 2.5模拟胃酸环境中处理3 h后活菌数没有显著变化。玉米抽提物只对JJB3具有很好的保护作用,可以延长SNZ10和KNZ4在酸性环境中的存活时间30 min,对MNZ8 30 min的成活率有一定的提高作用,但是不能延长它的存活时间。进一步的单因子分析表明,葡萄糖浓度变化显著影响乳酸杆菌的耐酸性,游离氨基氮含量对乳酸杆菌成活率几乎无影响。证明饲料原料豆粕和麦麸抽提物作为载体对4株乳酸杆菌耐酸性具有很好的保护作用,可作为提高乳酸杆菌制剂成活率的过瘤胃保护剂。     

不同乳酸菌对酸乳中霉菌污染的控制比较研究

以搅拌型酸乳为研究对象,比较A、B2种市售乳酸菌对酸乳中霉菌污染的控制效果及对酸乳营养成分、质构和感官品质的影响.结果表明:乳酸菌A、B对酸乳中污染的霉菌均具有不同程度的抑制作用,其中按厂家推荐量(乳酸菌A 2.0×106 CFU/mL,乳酸菌B 1.38×107 CFU/mL)添加时,乳酸菌B对霉菌的抑菌效果较好;但按2.0×106 CFU/mL的量添加乳酸菌A、B时,乳酸菌A对霉菌的抑制效果较好;乳酸菌B的添加对酸乳的风味会产生不良的影响,乳酸菌A的添加在保质期内对酸乳的感官品质基本无影响;添加了乳酸菌A、B的酸乳样品的营养成分和质构与对照组相比无太大变化.由此可见,部分乳酸菌的添加可以抑制酸乳中霉菌的滋生,而其抑菌效果与菌种种类和添加剂量有关.     

副干酪乳杆菌LC-01对便秘小鼠的通便作用

副干酪乳杆菌LC-01是一株具有较强抗氧化活性和免疫活性的益生菌菌株,为评价该菌株的润肠通便作用,实验通过将Balb/c雄性小鼠随机分为空白组、模型组、LCS对照组和3个副干酪乳杆菌LC-01给药组.空白组和模型组经口灌胃0.1mL/(kg·d)(以体质量计)质量分数10％的脱脂乳.选取代田乳酸菌LCS及干酪乳杆菌菌株LC-14作为对照菌株.代田乳酸菌LCS对照组灌胃1×108CFU/mL的菌悬液0.1mL/(kg·d),LC-14对照组和LC-01给药组分别相应给予低、中、高剂量(1×106、1×108、1×1010CFU/mL)的活菌液0.1mL/(kg·d).使用复方地芬诺酯建立小鼠便秘模型,副干酪乳杆菌LC-01给药7d后,便秘小鼠首次排便时间缩短,排便粒数和质量明显增加,粪便水分含量提高:连续15d灌胃副干酪乳杆菌LC-01,便秘小鼠小肠墨汁推进率也得到显著增加.结果表明,副干酪乳杆菌LC-01具有良好的润肠通便功能.