Dinoseb toxicosis in two dogs     

J D Fikes  R A Lovell  M Metzler  W B Buck 《Journal of the American Veterinary Medical Association》1989,194(4):543-544

Two male English Setters were noticed to be breathing rapidly, hyperexcitable, and atactic after roaming a rural area for 2 hours. Both dogs' cost were stained with yellow liquid. One dog died while en route to the veterinarian. Treatment was begun for the surviving dog for what was initially diagnosed to be organophosphorus or carbamate insecticide toxicosis. Before the diagnosis could be confirmed, the second dog died. The yellow liquid on the dogs' skin was identified as dinoseb in high concentrations. Dinoseb is an acutely toxic, substituted dinitrophenolic herbicide believed to act as an uncoupler of electron transport from oxidative phosphorylation.  相似文献   

First Established Pregnancies in Mediterranean Italian Buffaloes (Bubalus bubalis) Following Deposition of Sexed Spermatozoa near the Utero Tubal Junction     

GA Presicce  S Verberckmoes  EM Senatore  P Klinc  D Rath 《Reproduction in domestic animals》2005,40(1):73-75

At the time of AI following Ovsynch protocol, a total of 51 buffaloes were randomly divided in a first group (n = 30) subjected to conventional AI into the uterine body with 20 million non-sex sorted frozen-thawed spermatozoa, while a second group (n = 21) was inseminated near the utero-tubal junction (UTJ) ipsilateral to the ovary carrying the preovulatory follicle with 2.5 million live (4 million total) sex-sorted frozen-thawed spermatozoa. The semen used for flowcytometric sorting was collected and processed on a farm in Italy, and then shipped to a laboratory in Germany. Eleven buffaloes were inseminated with X-chromosome bearing spermatozoa and 10 with Y-chromosome bearing spermatozoa. Conception rates after conventional and UTJ inseminations were 43.3% (n = 13) and 42.8% (n = 9) respectively (p = 0.97). Eight of the nine foetuses obtained after insemination with sexed spermatozoa corresponded to the sex as predicted by the cell sorting procedure (five male and four female foetuses by ultrasound vs six male and three female foetuses by cell sorting). In conclusion, for the first time buffalo semen has been successfully subjected to procedures for flowcytometric sperm sorting and freezing. Low doses of sexed spermatozoa have been deposited near the UTJ giving conception rates similar to those of conventional AI with full dose.  相似文献   

Ovicidal lectins from Moringa oleifera and Myracrodruon urundeuva cause alterations in chorionic surface and penetrate the embryos of Aedes aegypti eggs     

Robson RV Alves  Tatiana Soares  Elinaldo FL Bento  Ricardo S Roldan‐Filho  Brbara SS Souza  Marcele KN Lima  Jssica S Nascimento  Luana CBB Coelho  Roberto A S  Thmarah A Lima  Gabriel GA Gonalves  Fbio A Brayner  Luiz C Alves  Daniela MAF Navarro  Thiago H Napoleo  Patrícia MG Paiva 《Pest management science》2020,76(2):730-736

  相似文献   

关于开发建设项目水土保持监督管理体系的思考与建议     

高远  任明 《中国水土保持》2007,(3):31-32

把依法行政分解为法律基础和行政体系2个方面,分析了开发建设项目水土保持监督管理体系在法律基础和行政体系2个方面存在的问题。法律基础方面存在的问题:一是相关法律中提到开发建设项目水土保持监督管理的内容较少,各项职责落实不到位;二是法律中没有明确流域机构的水土保持职能。行政体系方面存在的问题有:规范化建设还不够完善,个别地方水保部门对监督管理工作内容不了解,权大于法的情况时有出现。提出了完善开发建设项目水土保持监督管理体系的建议。  相似文献   

防病促生枯萎病拮抗菌“98-Ⅰ”对4种枯萎病防治效果研究   总被引：3，自引：0，他引：3  

马利平  乔雄梧  高芬  郝变青 《中国生态农业学报》2005,(1)

经 8年系统试验研究从 330个细菌菌株中筛选出 1株防病促生枯萎病拮抗菌“98 Ⅰ” ,经鉴定属蜡质芽孢杆菌。该菌对黄瓜枯萎病、西瓜枯萎病、青椒枯萎病和番茄枯萎病 4种土传病害均有显著防治效果 ,其平皿孢子萌发抑制率分别为 79 2 %、75 1%、72 3%和 95 7% ,且该菌对多种蔬菜有促生和促进种子发芽功效。  相似文献   

大豆水溶性多糖的黏度性质及其应用研究     

梁建忠顾苒  高红亮孙敏 常忠义 《华北农学报》2007,22(B10):143-145

研究了不同条件下大豆水溶性多糖溶液的黏度变化情况，同时和其他常用的稳定剂如果胶等也做了比较。试验结果表明。本实验室生产的大豆水溶性多糖的水溶液的黏度随着温度的升高、浓度的降低、外加盐量的增加而降低；随着外加蔗糖量、pH值的增加而增加；相比较于其他稳定剂大豆水溶性多糖的黏度很低，使酸乳饮料具有清爽的口味。  相似文献   

Detection of molecular alignment in confined films     

Eisert F  Gurka M  Legant A  Buck M  Grunze M 《Science (New York, N.Y.)》2000,287(5452):468-470

Optical second harmonic generation was used to study the in-plane alignment of self-assembled silane monolayers attached to a glass surface under mechanical loading. The measurements allow correlation of the macroscopic forces acting on the monolayer with the average orientation and the azimuthal molecular alignment of the terminal molecular entity. Compression and shear forces lead to an alignment of the initially randomly oriented molecules on a macroscopic length scale. The change in azimuthal alignment of molecules under mechanical stress was found to be irreversible on the time scale of 12 hours, whereas changes of the molecular tilt angle were reversible.  相似文献   

Oestradiol Induced Inhibition of Neuroendocrine Marker Expression in Leydig Cells of Adult Rats     

HH Ortega  NR Salvetti  C Baravalle  JA Lorente  GA Mira 《Reproduction in domestic animals》2006,41(3):204-209

The objectives of this work were to determine the changes in the expression of neuroendocrine markers in Leydig cell by oestradiol treatment, and to determine whether testosterone is able to recover partially the effects of hormonal suppression induced by oestradiol. Adult male rats were injected daily with either 50 microg of oestradiol or oestradiol plus testosterone propionate (25 mg every 3 days) for 15 days. The animals were sacrificed and testicles were dissected and processed by routine histological protocols. FSH and LH serum levels were determined by radioimmunoassay. The visualization of antigens was achieved by the streptavidin-peroxidase immunohistochemical method. Antibodies against chromogranin A (CrA), S-100 protein (S-100), P substance (PS), synaptofisin (SYN), neurofilament protein (NF), gliofibrillary acidic protein (GFAP) and neuron specific enolase (NSE) were used. The mean LH and FSH serum concentrations were consistently suppressed with hormonal treatments. Intermediate filaments (NF and GFAP) showed no difference in their expression. The expression of S-100, NSE and SYN was significantly lower in both hormone-treated groups. In oestradiol-treated rats, the immunoreactivity of CrA and SP decreased significantly but was restored after testosterone supplementation. Although the nature and functions of many of these substances in Leydig cells remain unknown, these results are consistent with the hypothesis that the expression of some neuroendocrine markers is hormonally controlled.  相似文献   

SYNCHRONOUS FLASHING OF FIREFLIES EXPERIMENTALLY INDUCED     

Buck JB 《Science (New York, N.Y.)》1935,81(2101):339-340

  相似文献   

Myocardial and pancreatic lesions induced by T-2 toxin, a trichothecene mycotoxin, in swine     

V F Pang  J H Adams  V R Beasley  W B Buck  W M Haschek 《Veterinary pathology》1986,23(3):310-319

Myocardial and pancreatic lesions induced by sublethal doses of T-2 toxin in swine were characterized by light and electron microscopy. Toxin was given intravenously to six 17- to 18-week-old pigs. Pigs were killed 24 or 48 hours after treatment. Grossly, subendocardial hemorrhages, multifocal pinpoint white foci in myocardium, and pancreatic edema occurred in one treated pig. Histologic changes in myocardium of treated pigs consisted of multifocal edema, mononuclear cell infiltration, myofiber hyalinization, vacuolation, and contraction bands with nuclear pyknosis. Ultrastructurally, there were areas of edema, myofibrillar disorganization, dilation of sarcoplasmic reticulum, and formation of hypercontraction bands. Myocardial mineralization was seen in the pig with gross lesions. Pancreatic changes in treated pigs consisted of multifocal acinar degeneration and necrosis. Ultrastructural changes included irregular dilation of rough endoplasmic reticulum and abnormal zymogen granules. Thus, in addition to radiomimetic lesions of the gastrointestinal tract and lymphoid organs, heart and pancreas are target organs of T-2 toxin in swine.  相似文献