Excision of the Deep Branch of the Lateral Palmar Nerve of Horses to Resolve Lameness Caused by Proximal Suspensory Desmitis     

Paolo Gay Guasco DMV  Ger Kelly MVB  Diplomate ECVS  James Schumacher DVM  MS  Diplomate ACVS  Robert W. Henry DVM  MS  PhD 《Veterinary surgery : VS》2013,42(3):296-301

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一株猪伪狂犬病病毒变异株的分离鉴定     

庞旋飞  练斯南  李中圣  万曾培  白挨泉 《中国畜牧兽医》2018,45(1):196-205

为了解广东省猪伪狂犬病病毒（pseudorabies virus，PRV）野毒株的基因变异及遗传演化的情况，本试验对广东佛山疑似暴发伪狂犬病的猪场采集的病料（脑、肺脏、扁桃体、肝脏、脾脏）进行了PCR鉴定，初步鉴定为PRV毒株后，将阳性病料接种非洲绿猴肾细胞（Vero），进行毒株传代培养，对分离毒株进行PCR检测及小鼠感染试验，证实该病毒为PRV，并命名为PRV FS-2015株；并对该毒株进行细胞病变观察、病毒TCID₅₀测定、毒株gC和TK基因扩增及序列分析。结果显示，PRV FS-2015株TCID₅₀为10^-7.5/0.1 mL。PRV FS-2015株的gC和TK基因序列与国内外PRV参考毒株进行同源性比对分析发现，其核苷酸序列同源性分别为95.8%~100.0%和99.4%~100.0%，氨基酸同源性分别为92.3%~100.0%和98.7%~100.0%。遗传进化分析表明，PRV FS-2015株与国内近几年分离的PRV变异株GY、ZJ01、HB1201、HN1201、JS2012、BJ/YT和BP属于同一分支，同源性较高，亲缘关系更近；但与PRV经典株Kaplan、Becker、NIA3、Kolchis、Bartha、Yangsan、Min-A、SS和SL株的同源性较低，基因变异较大，表明PRV FS-2015毒株属于近几年流行的变异株。本研究结果可为广东省伪狂犬病的防控工作和疫苗株的选择提供科学依据。  相似文献   

北京地区高尔夫球场植物选择的合理性研究     

程思楠  韩烈保 《中国农学通报》2010,26(6):193-197

摘要：对分别为平原型、丘陵型、山地型的高尔夫球场（北京鸿华高尔夫球场、北京叠泉乡村高尔夫球场、北京顺峰乡村高尔夫球场）植物群落进行调查,总结出目前北京地区高尔夫球场所应用的主要植物种类和群落类型,从而得出高尔夫球场的植物配置现状。搜集适合在北京地区生长的植物,结合高尔夫球场对植物应用的功能要求,归纳出适于种植在高尔夫球场不同区域的植物数量多达280种左右,研究结果为高尔夫球场设计及高尔夫球场的景观植物配置提供参考。  相似文献   

Sensory characteristics and nutritional value of red drum Sciaenops ocellatus reared in freshwater and seawater conditions          下载免费PDF全文

Mariel Gullian Klanian  Maribel Gerónimo Alonso 《Aquaculture Research》2015,46(7):1550-1561

This study compares sensory attributes, chemical composition, fatty acid profiles, and the taste of raw and cooked red drum Sciaenops ocellatus fillets, reared in seawater (SW) and in freshwater (FW) aquaculture systems. Significant nutritional differences were found in the raw fillets. The total lipid was higher (5.31%) in FW fish than the SW (2.60%). The ratio n‐3/n‐6 and EPA/DHA was higher in SW than FW fillets. The eicosenoic acid was only present in FW fillets. DHA was dominant in SW specimens, contrary to the arachidonic acid level, which was dominant in FW fillets. The assessors perceived a significant difference in the firmness and colour of raw fillets, but its odour intensity was not affected. Fillets from SW fish have higher acceptability (33.3%) than FW fillets (26.4%). Sensory differences in raw fillet were not correlated with consumer perceptions, as cooked fish was considered to have similar flavour, independent of its origin.  相似文献   

Intra‐annual patterns of coastal larval fish assemblages along environmental gradients in the northeastern Mediterranean          下载免费PDF全文

Sinan Mavruk  Fethi Bengil  Ahsen Yüksek  Caner Enver Özyurt  Volkan Barış Kiyağa  Dursun Avşar 《Fisheries Oceanography》2018,27(3):232-245

To date, little is known about the larval‐fish assemblages (LFAs) in the eastern Mediterranean. The purpose of this study is to investigate the intra‐annual variations of LFAs with an emphasis on the effects of physical, chemical, biological and meteorological conditions in the gulf of Iskenderun, which is a shallow (100 m maximum depth), semi‐enclosed bay located in the northeastern corner of the Mediterranean. The gulf is under the influence of offshore waters throughout the year. The study was based on an ichthyoplankton survey program performed at 28 stations over 12 months, between November 2009 and October 2010. During the study, a total of 11,411 larval individuals belonging to 177 taxa were sampled. The jackknife estimate of maximum species richness was 225 ± 19 for the study area. The maximum larval richness (84 species) and abundance (827 larvae/10 m²) values coincided with spring bloom in April. Gobiids dominated the ichthyoplankton of Iskenderun Bay by constituting 9% of species richness and 42% of total individuals. Four LFAs were identified which were in early winter (November to January), late winter (February and March), spring (April to June) and summer (July to October). The intra‐annual variations of richness, abundance and composition of ichthyoplankton were significantly correlated with the temperature and mesozooplankton biomass. The wind conditions and thermal stratification were also significantly correlated with the composition of LFAs. In conclusion, phenology of LFAs were formed under the influence of physical and tropho‐dynamic conditions in Iskenderun Bay, Northeastern Mediterranean.  相似文献   

Detection of synovial sepsis in horses using enzymes as biomarkers     

Rhea Haralambus  Agnieszka Florczyk  Eva Sigl  Sinan Gültekin  Claus Vogl  Sabine Brandt  Marlies Schnierer  Clemens Gamerith  Florien Jenner 《Equine veterinary journal》2022,54(3):513-522

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大豆细菌性斑点病抗性评价及QTL定位     

梅宏瑶  李思楠  李沫  潘校成  苏安玉  武小霞 《分子植物育种》2020,(1):176-186

为了筛选获得稳定抗细菌性斑点病种质和挖掘有效抗病基因,本研究以野生型大豆ZYD00006与‘绥农14’构建的全基因组回交导入系群体为试验材料,利用高压喷雾法接种丁香假单胞杆菌Psgneau001进行细菌性斑点病抗病性鉴定。运用复合区间作图法(composite interval mapping,CIM)进行细菌性斑点病QTL定位,并针对定位区间进行基因功能注释和相关抗病基因的筛选和预测。结果表明:QTL分析共检测到6个位点与抗病相关(qbsd-D1a-1,qbsd-A1-1,qbsd-C2-1,qbsd-A2-1,qbsd-D2-1,qbsd-D2-2);分别位于1号(LG D1a)、5号(LG A1)、6号(LG C2)、8号(LG A2)、17号(LG D2)染色体上。经基因注释和筛选共获得41个候选基因,它们多与富含亮氨酸重复序列受体蛋白(LRR protein)相关。本研究通过QTL初定位明确了大豆细菌性斑点病相关区间,为进一步精细定位和分子标记辅助育种提供科学依据。  相似文献   

欧洲千里光CYCLOIDEA(CYC)类SvRAY1基因的克隆及功能分析   总被引：1，自引：1，他引：0       下载免费PDF全文

陈柯俐  朴春兰  郝燕敏  冯丽君  周佳圆  栾思楠  刘乐乐  李菲菲  袁思明  崔敏龙 《浙江农林大学学报》2021,38(6):1153-1160

  目的  揭示菊科Asteraceae欧洲千里光Senecio vulgaris CYC2类RAY1基因过表达使舌状花发生不同程度变宽现象的机制,进一步探究其产生原因。  方法  克隆欧洲千里光SvRAY1基因,利用生物信息学、实时荧光定量PCR反应(qRT-PCR)、超表达载体构建、扫描电镜观察、转基因植株形态学观察与统计等方法与技术,进一步进行SvRAY1基因功能分析。  结果  qRT-PCR反应显示:SvRAY1基因主要在欧洲千里光舌状花及筒状花中表达,且生殖发育第S3和S4阶段舌状花中表达量最高;形态学观察表明转基因欧洲千里光SvRAY1超表达植株的舌状花比野生型长度较短、显著变宽。扫描电镜观察舌状花腹侧表皮细胞大小与形状,宽度显著变宽的株系中显示远轴端细胞排列紧密且细胞分裂旺盛,中轴端细胞形状由边缘弯曲变为平滑,细胞长度变短且分裂旺盛。  结论  欧洲千里光舌状花发育过程中,SvRAY1基因可能促进细胞横向分裂,进而舌状花细胞形态和排列发生不同程度的变化引起舌状花变宽。图6表2参28  相似文献   

Resistance enhancement of transgenic tomato to bacterial pathogens by the heterologous expression of sweet pepper ferredoxin-I protein     

Huang HE  Liu CA  Lee MJ  Kuo CG  Chen HM  Ger MJ  Tsai YC  Chen YR  Lin MK  Feng TY 《Phytopathology》2007,97(8):900-906

ABSTRACT Expression of a foreign gene to enhance plant disease resistance to bacterial pathogens is a favorable strategy. It has been demonstrated that expressing sweet pepper ferredoxin-I protein (PFLP) in transgenic plants can enhance disease resistance to bacterial pathogens that infect leaf tissue. In this study, PFLP was applied to protect tomato (Lycopersicon esculentum cv. cherry Cln1558a) from the root-infecting pathogen, Ralstonia solanacearum. Independent R. solanacearum resistant T(1) lines were selected and bred to produce homozygous T(2) generations. Selected T(2) transgenic lines 24-18-7 and 26-2-1a, which showed high expression levels of PFLP in root tissue, were resistant to disease caused by R. solanacearum. In contrast, the transgenic line 23-17-1b and nontransgenic tomato, which showed low expression levels of PFLP in root tissue, were not resistant to R. solanacearum infection. The expansion of R. solanacearum populations in stem tissue of transgenic tomato line 24-18-7 was limited compared with the nontransgenic tomato Cln1558a. Using a detached leaf assay, transgenic line 24-18-7 was also resistant to maceration caused by E. carotovora subsp. carotovora; however, resistance to E. carotovora subsp. carotovora was less apparent in transgenic lines 26-2-1a and 23-17-1b. These results demonstrate that PFLP is able to enhance disease resistance at different levels to bacterial pathogens in individual tissue of transgenic tomato.  相似文献   

Efficacy of vitamin E + selenium and vitamin A + D + E combinations on oxidative stress induced by long-term transportation in Holstein dairy cows     

Mustafa Sinan Aktas  Seckin Ozkanlar  Akar Karakoc  Fatih Akcay  Yunusemre Ozkanlar 《Livestock Science》2011,141(1):76-79

The aim of this study was to evaluate the stress response to long-term transportation and to analyze the effects of vitamin A + D + E and vitamin E + selenium administrations on oxidative stress induced by long-term transportation in Holstein dairy cows. Control group (n = 10) received 0.9% saline (placebo), Group I (n = 10) received vitamin A + D + E, and Group II (n = 10) received vitamin E + selenium. After the transport, adrenaline levels were high in all groups (P < 0.05). Noradrenaline level was low in Group I (P < 0.05) and tended to be low in Group II. Mean levels of serum cortisol decreased significantly in all groups (P < 0.05) when comparing pre-transport data with post-transport data. Glucose levels increased in Control group (P < 0.05) and in Groups I and II (P < 0.01). The malondialdehyde level significantly increased in the Control group (P < 0.05) after the transport and the levels were lower in Group I (P = 0.076) and Group II (P < 0.05) than in the Control group. As a result, vitamin E + selenium and vitamin A + D + E have been determined to prevent lipid peroxidation and oxidative stress, associated with long-term transportation stress in cattle.  相似文献