Pulsed-field gel electrophoresis typing of Campylobacter fetus subsp. fetus isolated from sheep abortions in New Zealand     

SA Mannering  DM West  SG Fenwick  RM Marchant  NR Perkins  K O'Connell 《New Zealand veterinary journal》2013,61(6):358-363

AIMS: To genotype Campylobacter fetus subsp. fetus isolates cultured from sheep abortions submitted to diagnostic laboratories in New Zealand during the year 2000 breeding season. To compare the types found nationally with those found in the Hawke' Bay region in 1999, and strains held in the New Zealand Reference Culture Collection, Medical Section (NZRM) from a study published in 1987.

METHODS: Campylobacter fetus subsp. fetus isolates cultured by veterinary diagnostic laboratories in the year 2000 breeding season, from sheep abortions from throughout New Zealand, were typed using pulsed-field gel electrophoresis (PFGE). In addition, seven freeze-dried C. fetus subsp. fetus isolates (strain numbers 2939–2945) from the NZRM, representing restriction types a–g found amongst sheep abortion isolates in a study published in 1987, were typed using PFGE.

RESULTS: In total, 293 C. fetus subsp. fetus isolates from 200 farms were obtained from veterinary diagnostic laboratories. Twenty-two distinct PFGE profiles were identified amongst the isolates. PFGE type B1 was predominant in each region of New Zealand and was identified from 66% of farms overall. Of the C. fetus subsp. fetus restriction types a–g lodged with the NZRM, 3/7 had PFGE profiles indistinguishable from profiles found in the current study. The other four restriction types had PFGE profiles that were unique but similar to those found in the current study.

CONCLUSIONS: PFGE type B1 was predominant amongst the C. fetus subsp. fetus isolates cultured from sheep abortions in each region of New Zealand in the year 2000, as was found in Hawke' Bay in 1999. The similarity between PFGE profiles of C. fetus subsp. fetus sheep abortion isolates from 1987 and 2000, and the relative prevalence of the PFGE groups, suggests that there has been no major genotypic shift in the population of C. fetus subsp. fetus implicated in sheep abortion in New Zealand during this time.  相似文献   

Preliminary investigation into the prevalence of mucormycosis in the platypus (Ornithorhynchus anatinus) in three catchments in north-west Tasmania     

JW Macgregor  CS Holyoake  SA Munks  ID Robertson  KS Warren 《Australian veterinary journal》2010,88(5):190-196

Objective To investigate the distribution and prevalence of mucormycosis in platypus (Ornithorhynchus anatinus) from the Inglis, Emu and Black-Detention catchment areas in north-west Tasmania. Procedure A field study was performed and resulted in the examination of 44 wild platypuses; in addition, one dead platypus and two live platypuses were examined after they were independently submitted to a local veterinary clinic. Results No cases of mucormycosis were conclusively diagnosed. One platypus with signs consistent with those previously described in cases of mucormycosis was captured in the Emu River catchment. However, laboratory tests did not provide a definitive diagnosis for the lesion. Two platypuses from the Inglis catchment area had signs very similar to those previously described in cases of mucormycosis, but laboratory tests found Corynebacterium ulcerans to be the likely cause of the cutaneous ulcers on one of these platypuses and an unidentified fungal agent to be the cause of a cutaneous nodule in the other. Conclusions These findings do not prove that mucormycosis is absent from the populations studied. However, they may indicate that the prevalence of disease is low. The possibility that Mucor amphibiorum is present in a subclinical form in platypuses, or infecting another reservoir, is not excluded. The findings also suggest that caution should be exercised when diagnosing mucormycosis based on clinical findings alone and raise the possibility that some cases may have been incorrectly diagnosed.  相似文献   

薏米果冻的研制     

潘俊丽  岳玉莲  撒楠  王小瑜  王艳颖  金黎明 《天津农业科学》2011,17(5):130-132

以薏米酶解液为主要原料制作果冻,采用正交试验确定果冻的最佳配方。结果显示,其最佳配方为:果汁∶薏米液=1∶1,蔗糖2%,琼脂1.8%。所得产品香味浓郁,口感爽滑,且具有保健功能。  相似文献   

解淀粉芽孢杆菌在畜禽养殖中的应用研究进展     

栾素军  邢焕  孙永波  萨仁娜  张宏福 《中国畜牧兽医》2016,43(10):2615-2620

解淀粉芽孢杆菌是自然界中广泛存在的非致病性微生物,在代谢过程能产生多种生物活性物质,对病原菌和真菌具有较好的抑制效果。近些年,随着对解淀粉芽孢杆菌的深入研究,一些生物活性物质被分离、提取、纯化,不同用途的解淀粉芽孢杆菌制剂逐渐在畜牧、水产养殖业中得以应用。作者针对解淀粉芽孢杆菌在畜禽养殖业中的应用及作用机制进行了总结和分析,以期为今后研究和开发利用解淀粉芽孢杆菌提供参考。  相似文献   

呼伦贝尔草原野生牧草青贮中优良乳酸菌的分离及鉴定     

王红梅  孙启忠  屠焰  司丙文  萨如拉  那亚  刁其玉 《草业学报》2016,25(8):189-196

本研究对呼伦贝尔草原牧草青贮饲料中的乳酸菌进行了分离、鉴定,旨为筛选出优良乳酸菌菌株。以4个地区不同群落牧草的青贮饲料为试验材料,并采用传统微生物学鉴定方法及16S rRNA序列分析对分离得到的乳酸菌菌株进行了鉴定。菌株DME53为草乳杆菌,DMG108为干酪乳杆菌,DMC80为植物乳杆菌,DMG138为短乳杆菌,DMG139为戊糖片球菌;其中菌株DMG138为异型发酵乳酸菌,其余4株菌均为同型发酵乳酸菌。除DMG139在40和45 ℃下生长微弱外,其余菌株均在5~45 ℃不同温度条件下, 3.0%和6.5% NaCl培养液中良好生长。除菌株DME53在pH 3.0下不能生长外,其余菌株均在pH 3.0~8.0条件下良好生长或微弱生长。菌株DMC80具有产酸能力较强、发酵速率较快、耐酸、耐低温等特性,可作为制备适用于呼伦贝尔地区青贮饲料菌制剂的优良菌株。  相似文献   

蒙古家马和蒙古野马线粒体细胞色素b基因遗传多样性及系统进化分析     

海棠  黄金龙  赵一萍  韩海格  萨如拉  芒来 《中国畜牧兽医》2014,41(6):162-167

通过对马的线粒体细胞色素b（Cytb）基因序列的遗传变异分析,来探讨蒙古家马、蒙古野马和驴之间的亲缘关系和遗传多样性。对各类马和驴样本 mtDNA Cytb 基因进行PCR扩增和测序,运用现代分子生物学软件进行数据处理。结果共检测到15个单倍型,90个突变位点,单倍型多样性（Hd）为0.9356,核苷酸多样性（Pi）为0.01022,平均核苷酸差异数（K）为8.966,各群体间的遗传多样性相差不大。系统发育树和NETwork图中每一分支都至少包含2个群体的信息。4个类型蒙古家马总体上具有较高的遗传多态性,蒙古家马与蒙古野马之间的亲缘关系较近, 且出现数个分支,蒙古家马分布在各独立的进化支中,说明蒙古家马母系来源非常广泛或经过多次驯化。  相似文献   

Comparison of laparoscopic‐assisted technique and open laparotomy for gastrointestinal biopsy in cats*          下载免费PDF全文

Janet Kovak McClaran DVM  DACVS‐SA  DECVS  Suzanne C. Skerrett DVM  DACVS‐SA  Rachael L. Currao DVM  Philippa R. Pavia VMD  DACVS‐SA  Kiki M. Tarvin DVM  MPH 《Veterinary surgery : VS》2017,46(6):821-828

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CT‐derived indices of canine osteosarcoma‐affected antebrachial strength          下载免费PDF全文

Tanya C. Garcia MS  Michele A. Steffey DVM  Diplomate ACVS‐SA  Allison L. Zwingenberger DVM  Diplomate ACVR  Leticia Daniel MV  Susan M. Stover DVM  PhD  Diplomate ACVS 《Veterinary surgery : VS》2017,46(4):549-558

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