Analysis on the Hepialus Gonggaensis'' Intestinal Bacterial Flora     

ZHUO Feng-ping~ 《保鲜与加工》2004,(11):26-29

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Do woodlice (Isopoda: Oniscidea) produce endogenous cellulases?     

M. Zimmer  W. Topp 《Biology and Fertility of Soils》1997,26(2):155-156

In studies on digestive processes and microorganisms in the gut of the common woodlouse, Porcellio scaber (Isopoda: Oniscidea), we observed marked contradictions between the activity of cellulolytic enzymes and the number of microorganisms. The anterior hindgut exhibited the highest cellulolytic activity, but was characterized by low microbial counts. Due to the presence of endosymbiotic bacteria in the midgut lobes that appear to produce cellulases, we suggest that the cellulases that are active in the hindgut of woodlice are of endogenous origin. Received: 4 April 1997  相似文献   

Fungal and bacterial communities in Lumbricus terrestris burrow walls: a laboratory experiment     

Alexei V. Tiunov  Tatyana G. Dobrovolskaya 《Pedobiologia》2002,46(6):595-605

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Earthworms disseminate a soil-borne plant pathogen,Fusarium oxysporum f. sp. raphani     

K. Toyota  M. Kimura 《Biology and Fertility of Soils》1994,18(1):32-36

Radish plants infested with a soil-borne plant pathogen, Fusarium oxysporum f. sp. raphani PEG-4, which is resistant to hygromycin B, were placed on the surface of a soil microcosm containing earthworms (Pheretima sp.). The earthworms ate the radish plants and scattered individual casts everywhere in the burrows. The fungal propagules were detected in the gut of the earthworms and in 26 out of 28 casts. These results suggested that the pathogen could survive passage through the alimentary canal of the earthworms and be disseminated anywhere earthworms wandered. The collected casts were incubated in a moist chamber at 28°C for 14 days, which resulted in a decline in the number of the propagules. The effects of the earthworms on the population dynamics of the pathogen were estimated. The earthworms seemed to cause a decline in total propagules of the pathogen in soil, although they expanded its distribution in soil.  相似文献   

The microfungal community of Lumbricus terrestris middens in a linden (Tilia cordata) forest     

Maral Kh. Orazova  Tatyana A. Semenova  Alexei V. Tiunov   《Pedobiologia》2003,47(1):27-32

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加味葛根芩连汤对湿热泄泻仔猪肠道炎症和损伤修复的作用     

刘晓曦  马云飞  李焕荣  刘凤华  鲍明隆  张继东  林红英  许剑琴 《畜牧兽医学报》2021,52(1):246-255

通过用加味葛根芩连汤治疗仔猪的湿热泄泻,探讨其对湿热泄泻仔猪肠道的修复作用。选取8~15日龄未断奶仔猪（大白×长白）30头,其中健康仔猪6头,为对照组;有粪色黄褐而臭、小便短赤、舌质红等症状的泄泻仔猪24头,分为湿热泄泻组、加味葛根芩连汤低剂量组、加味葛根芩连汤中剂量组和加味葛根芩连汤高剂量组,每组6头。对照组和湿热泄泻组仔猪灌服生理盐水,药物组仔猪灌服加味葛根芩连汤（按生药量,低、中、高剂量组药物添加量分别为2.5、5.0和10.0 g·d^-1）,连续5 d。在服药的第0、3、5天记录各组仔猪的粪便评分。取对照组、湿热泄泻组、加味葛根芩连汤中剂量组仔猪十二指肠、空肠、回肠和结肠进行组织切片和H.E.染色,取十二指肠进行增殖性细胞核抗原（PCNA）免疫组化染色;用荧光定量PCR检测对照组、湿热泄泻组、加味葛根芩连汤中剂量组仔猪空肠TLR4、TNF-α、IL-1β和IL-6 mRNA表达量变化。湿热泄泻严重破坏了仔猪的十二指肠、空肠、回肠和结肠结构,尤其是十二指肠和空肠,十二指肠隐窝处PCNA表达量显著升高（P<0.05）。与对照组相比,湿热泄泻组仔猪空肠TLR4（P<0.05）、TNF-α（P<0.01）、IL-1β（P<0.01）和IL-6（P<0.05）mRNA表达量显著升高。相比于湿热泄泻组,加味葛根芩连汤显著降低了仔猪的粪便评分（P<0.05）。中剂量加味葛根芩连汤组仔猪的小肠和结肠的组织结构得到显著改善,十二指肠的肠腔中有不断脱落的绒毛团,绒毛中的PCNA表达量极显著升高（P<0.01）。与湿热泄泻组相比,加味葛根芩连汤中剂量组空肠TLR4（P<0.05）、TNF-α（P<0.01）、IL-1β（P<0.01）和IL-6（P<0.05）mRNA表达量显著降低。综上表明,加味葛根芩连汤可通过促进隐窝干细胞的增殖和降低炎症反应对湿热泄泻造成的仔猪肠道损伤进行修复。  相似文献   

我国部分地区羊消化道寄生虫感染情况调查及球虫种类鉴定     

刘林科  菅忆晨  王占铭  李世杰  王荣军  宁长申  张素梅  菅复春 《畜牧与兽医》2021,(4):117-123

为了解我国部分地区羊肠道寄生虫的感染情况,采用水洗离心沉淀法、卢戈氏碘液染色法和饱和蔗糖溶液漂浮法,对来自全国8省16个地区共472份羊粪样品进行了肠道寄生虫的显微镜检查,并根据虫卵和卵囊形态进行了虫种鉴定。本次调查寄生虫总感染率为85.38%(403/472),混合感染率为46.40%(219/472),共查到球虫、阿米巴、线虫和绦虫4大类寄生虫,感染率分别为68.86%(325/472)、44.49%(210/472)、29.24%(138/472)和1.91%(9/472)。球虫种类鉴定结果显示共10种,分别为阿氏艾美耳球虫(Eimeri arloingi)、艾丽艾美耳球虫(Eimeri alijevi)、苍白艾美耳球虫(Eimeri pallida)、家山羊艾美耳球虫(Eimeri hirci)、山羊艾美耳球虫(Eimeri caprina)、阿撒他艾美耳球虫(Eimeri ahsata)、斑点艾美耳球虫(Eimeri punctata)、羊艾美耳球虫(Eimeri caprovina)、颗粒艾美耳球虫(Eimeri granulosa)和克氏艾美耳球虫(Eimeri christenseni);线虫共4种,分别为类圆线虫(Strongyloides spp)、毛首线虫(Trichuris spp)、毛细线虫(Capillaria spp)和细颈线虫(Nematodirus spp);绦虫为扩展莫尼茨绦虫(Moniezia expansa)。结论:我国部分地区羊肠道寄生虫在春夏季节感染较为普遍,其中球虫感染率最高,为优势虫种。本调查为羊场精准驱虫提供了参考依据。  相似文献   

Prognostic value of small intestinal dilatation in dogs with protein-losing enteropathy     

Hiroshi OHTA  Noriyuki NAGATA  Nozomu YOKOYAMA  Tatsuyuki OSUGA  Noboru SASAKI  Keitaro MORISHITA  Mitsuyoshi TAKIGUCHI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(3):378

To date, little is known about the prognostic significance of ultrasonographic findings in dogs with protein-losing enteropathy (PLE). The aim of this retrospective study was to examine the prognostic value of ultrasonographic findings in dogs with PLE. A total of 26 dogs with PLE were included: 20 dogs with chronic enteropathy and 6 dogs with gastrointestinal lymphoma. The presence of small intestinal dilatation was associated with shorter survival time in dogs with PLE (P=0.003). The presence of hyperechoic intestinal mucosal striations was associated with longer survival time in dogs with PLE (P=0.0085). The results of the current study indicate that the presence of small intestinal dilatation might be associated with poor prognosis in dogs with PLE.  相似文献   

微生态制剂对肉鸡生长性能、免疫功能、肠道菌群及血清生化指标的影响     

赵永玉 《饲料研究》2021,(2):50-53

为研究微生态制剂对肉鸡生长性能、免疫功能、肠道菌群及血清生化指标的影响,试验选用1日龄AA肉仔鸡800只,随机分为5组,每组8个重复,每个重复20只。对照组肉鸡饲喂基础日粮,微生态制剂组在基础日粮中依次添加剂量0.1%、0.2%、0.4%、0.6%的微生态制剂,试验期42 d。结果显示:与对照组相比,日粮中添加0.2%、0.4%和0.6%的微生态制剂显著提高肉仔鸡末重(P<0.05),微生态制剂组肉鸡的平均日增重均显著高于对照组(P<0.05),日粮中添加0.2%、0.4%和0.6%的微生态制剂显著降低料重比(P<0.05);日粮中添加微生态制剂可以提高肉鸡血清IgG水平,且0.4%微生态制剂组显著高于对照组(P<0.05);与对照组相比,日粮中添加0.2%、0.4%和0.6%的微生态制剂可显著降低肉鸡肠道中大肠杆菌和沙门氏菌数量(P<0.05),且0.4%添加量组的效果显著优于其他添加量组(P<0.05);日粮中添加0.2%、0.4%和0.6%的微生态制剂可显著增加肉鸡肠道找那个乳酸杆菌和双歧杆菌数量(P<0.05);日粮中添加0.2%、0.4%和0.6%的微生态制剂可显著提高肉鸡血清总蛋白含量,降低血糖含量(P<0.05)。研究表明,在肉鸡日粮中添加微生态制剂能够提高肉鸡的生长性能,提高机体免疫力,改善肠道菌群结构,最适添加量为0.4%。  相似文献   

丁酸梭菌和枯草芽孢杆菌对肉鹅生长性能、消化酶活性、抗氧化功能和肠道形态的影响     

于洁  范雪  赵敏孟  董飚  王健  龚道清 《动物营养学报》2021,33(2)

本试验旨在研究饲粮中添加丁酸梭菌和枯草芽孢杆菌对1~70日龄扬州鹅生长性能、消化酶活性、抗氧化功能和肠道形态的影响。选择1日龄健康、体重相近的扬州鹅公鹅288只,随机分为4组,每组6个重复,每个重复12只鹅。A组(对照组)饲喂基础饲粮,B组在基础饲粮中添加250 mg/kg丁酸梭菌(有效活菌数为3.0×10^6 CFU/g),C组在基础饲粮中添加250 mg/kg枯草芽孢杆菌(有效活菌数为2.0×10^7 CFU/g),D组在基础饲粮中添加250 mg/kg丁酸梭菌+250 mg/kg枯草芽孢杆菌。试验期10周。结果表明:1)B、C和D组总增重显著高于对照组(P<0.05),C、D组总采食量显著高于对照组(P<0.05)。2)B、C和D组空肠脂肪酶活性显著高于对照组(P<0.05)。3)C、D组血清和回肠总抗氧化能力显著高于对照组(P<0.05)。D组空肠谷胱甘肽含量显著高于对照组(P<0.05),C、D组空肠总超氧化物歧化酶活性显著高于对照组(P<0.05)。D组回肠谷胱甘肽过氧化物酶活性显著高于对照组(P<0.05)。4)C组空肠绒毛高度/隐窝深度(V/C)显著高于对照组(P<0.05)。B、C和D组回肠绒毛高度显著高于对照组(P<0.05),C、D组回肠V/C显著高于对照组(P<0.05)。由此可见,饲粮中添加丁酸梭菌和枯草芽孢杆菌及二者混合制剂可提高肉鹅总增重、空肠脂肪酶活性及抗氧化功能,添加枯草芽孢杆菌可更好地改善肠道形态。  相似文献