Dog castration abroad     

Deen A  Jongsma-Biben Y  van Gisbergen R 《Tijdschrift voor diergeneeskunde》2003,128(3):92

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Occurrence of the temperature-sensitive hemagglutinin among avian Escherichia coli     

Delicato ER  de Brito BG  Konopatzki AP  Gaziri LC  Vidotto MC 《Avian diseases》2002,46(3):713-716

In this study, we determined the occurrence of the tsh gene among 305 Escherichia coli isolates from chickens by means of the polymerase chain reaction and agglutination of chicken erythrocytes; 200 of those isolates were obtained from chickens with colisepticemia, 52 isolates were from lesions of cellulitis, and 53 were from feces of normal chickens. The tsh gene was found in 79 (39.5%) isolates from colisepticemia, in 10 (19%) cellulitis-derived E. coli isolates, and in two (3.8%) fecal isolates. Among the tsh+ strains, 68 (86%) isolates from colisepticemia and nine (90%) from cellulitis agglutinated chicken erythrocytes in the presence of mannose, after growing the strains on colonization factor antigen agar plates at 26 C, which confirms a correlation between mannose-resistant hemagglutination and expression of hemagglutinin Tsh. These results show, for the first time, the presence of the gene tsh in cellulitis-derived E. coli isolates; the high frequency of this gene among avian pathogenic E. coli isolates in Brazil indicates that its putative role as a virulence factor should be studied more thoroughly.  相似文献   

The neurological examination and lesion localization in the companion rabbit (Oryctolagus cuniculus).     

Karen M Vernau  Anna Osofsky  Richard A LeCouteur 《Veterinary Clinics of North America: Exotic Animal Practice》2007,10(3):731-58, v

Completion of a thorough neurological examination of a rabbit is essential for clinicians to determine the location of a neurological problem. Determination of the location of a lesion (whether solitary or multifocal/diffuse) enables a clinician to list the most likely causes of the problem. This article presents the neurological examination of the rabbit, followed by a practical guide to lesion localization in this species.  相似文献   

Perspectives and advances in in-clinic laboratory diagnostic capabilities: hematology and clinical chemistry.     

M Glade Weiser  Linda M Vap  Mary Anna Thrall 《Veterinary Clinics of North America: Small Animal Practice》2007,37(2):221-36, v

The typical technologies used in veterinary hematology and biochemical analyzers are reviewed, along with associated advantages and disadvantages. Guidelines for implementing a successful in-clinic laboratory are provided, including criteria for system evaluation and expectations for comparative performance evaluations. The more common problems and limitations associated with in-clinic laboratory diagnostics and how to best prevent them are also discussed.  相似文献   

Plant Host Range of Verticillium longisporum and Microsclerotia Density in Swedish Soils     

Anna Johansson  Jan-Kees C. Goud  Christina Dixelius 《European journal of plant pathology / European Foundation for Plant Pathology》2006,114(2):139-149

Verticillium longisporum is a soil-borne fungal pathogen causing vascular wilt of Brassica crops. This study was conducted to enhance our knowledge on the host range of V. longisporum. Seven crop species (barley, oat, oilseed rape, pea, red clover, sugar beet and wheat) and five weed species (barren brome, black-grass, charlock, cleavers and scentless mayweed) all common in southern Sweden were evaluated for infection by response to V. longisporum. Oat, spring wheat, oilseed rape, scentless mayweed and charlock inoculated with V. longisporum in a greenhouse showed stunting to various degrees close to the fully ripe stage. Based on the extent of microsclerotia formation, explants were separated into four groups: for pea and wheat, <5% of the samples had formed microsclerotia; for scentless mayweed, 5–10%; for oat, 10–20%; and for charlock and oilseed rape >80%. The results suggest that plant species outside the Brassicaceae can act as reservoirs of V. longisporum inoculum. Soil inoculum densities in nine fields were monitored over a period of 12 months, which ranged from 1 to 48 cfu g⁻¹ soil. Density of microsclerotia was lowest just after harvest, reaching its maximum six months later. No significant correlation between inoculum density in soil and disease incidence on oilseed rape plants was found. However, the data suggest that a threshold of 1 cfu g⁻¹ soil is needed to cause disease on oilseed rape. Species identification based on microsclerotia morphology and PCR analysis showed that V. longisporum dominated in soil of seven, and V. dahliae in two of the nine fields studied.  相似文献   

Thoracoscopic pericardiotomy as a palliative treatment in a cow with pericardial lymphoma     

Jrme Van Biervliet DVM  Dipl ACVIM  Marc Kraus DVM  Dipl ACVIM  Brett Woodie DVM  Dipl ACVS  Thomas J. Divers DVM  Dipl ACVIM  Dipl ACVECC  Anna Gelzer Dr. Med. Vet.  Dipl ACVIM  Dorothy Ainsworth DVM  PhD  Dipl ACVIM 《Journal of Veterinary Cardiology》2006,8(1):69-73

A 5-year-old Holstein cow, pregnant with a valuable calf, was presented with signs of heart failure (tachycardia, peripheral edema, and distended jugular veins) related to pericardial lymphoma and associated cardiac tamponade. In addition, pleural effusion was present in both hemithoraces. Medical treatment, which consisted of repeated pericardiocenteses, placement of indwelling pleural catheters, administration of intravenous fluid therapy, antibiotics and anti-inflammatory drugs, was ineffective in controlling recurrence of clinical signs despite a temporary improvement. A standing thoracoscopic pericardiotomy was performed in an attempt to reduce clinical signs of heart failure and to prolong life. Clinical signs of heart failure abated and no recurrence was seen. Standing thoracoscopic pericardiotomy along with possible corticosteroids can be recommended as palliative treatment in an effort to extend life for reproductive performance in genetically valuable animals.  相似文献   

非洲鸵鸟的雌雄鉴别研究     

王岩  彭克美  宋卉  位兰  李升和  唐丽  杜安娜  靳二辉  王家乡 《野生动物》2007,28(1):7-9

对鸵鸟进行早期的性别鉴定，可以确保期望的鸵鸟雌雄性别比例，雏鸟雌雄分群饲养，加快鸵鸟驯养进程，提高育雏成活率都有着重要意义。本研究采用翻肛法，对人工饲养的1～3月龄育雏期非洲鸵鸟进行试验与研究。结果表明，在1月龄时就可根据有无生殖交媾器及其形态、大小的差别进行雌雄鉴别，打破了通常认为鸵鸟在4月龄时才可以进行性别鉴定的传统做法，为非洲鸵鸟的饲养管理提供了有利的依据。  相似文献   

Enjoyment and fear in urban woodlands – Does age make a difference?     

Anna Jorgensen  Alexandra Anthopoulou 《Urban Forestry & Urban Greening》2007,6(4):267-278

Urban dwellers experience conflicting thoughts and feelings about urban woodlands; valued for their natural qualities, the relief they provide from the stress of modern urban living and the opportunities they afford for children's play and exploration. At the same time the seclusion inherent in this type of urban greenspace seems fraught with risk from crime, vandalism and abuse. Whilst many of these characteristics are well-researched, less is known about the differing perceptions of particular social groups. This study aimed to explore the ways in which age affects urban dwellers’ aspirations, values and fears concerning the woods, and woodland accessibility, focusing on the views of elderly people (aged over 65). This pilot study was based in Norfolk Heritage Park, an urban park containing a variety of woodland settings located in Sheffield, UK. The questionnaire survey (participantsn=97) revealed that although walking is the most popular leisure activity, most respondents did not visit urban parks as often as they would like, regardless of age. Whilst many of the meanings associated with urban woodland (“relaxation”, “peacefulness”, “seasonal change”, “scenery” and “education”) were shared amongst age groups, it seemed that the elderly respondents particularly valued the woods for their links with the past, and opportunities for immersion in the natural world. Some respondents from all age groups had fears about their personal security in the woodland, and the concerns of the elderly were heightened by their perceived frailty, reduced mobility and sense of vulnerability; this age group had a corresponding need for particular measures to alleviate these problems. The study provides preliminary evidence for the idea that adults of different ages have differing perceptions and requirements in relation to urban woodlands. Due to the small sample size and other methodological issues, further research is needed to confirm and develop the findings.  相似文献   

‘Candidatus Phytoplasma australiense’ is the phytoplasma associated with Australian grapevine yellows, papaya dieback and Phormium yellow leaf diseases     

Lia W. Liefting  Anna C. Padovan  Karen S. Gibb  Ross E. Beever  Mark T. Andersen  Richard D. Newcomb  David L. Beck  Richard L.S. Forster 《European journal of plant pathology / European Foundation for Plant Pathology》1998,104(6):619-623

Sequence comparisons and phylogenetic analysis of the 16S rRNA genes and the 16S/23S spacer regions of the phytoplasmas associated with Australian grapevine yellows, papaya dieback and Phormium yellow leaf diseases revealed minimal nucleotide differences between them resulting in the formation of a monophyletic group. Therefore, along with Australian grapevine yellows, the phytoplasmas associated with Phormium yellow leaf and papaya dieback should also be considered as Candidatus Phytoplasma australiense.  相似文献   

Effect of diethylstilbestrol concentration and duration of contact with nursing Levant voles,on the reproduction of their female offspring     

Anna German 《Phytoparasitica》1985,13(3-4):209-213

A 5-minute contact of nursing mothers of the Levant vole,Microtus guentheri, with paper impregnated with a DES suspension in soybean oil (125 μg/cm² ) caused sterilization of 60% of the newborn female offspring. A 1-hour contact was sufficient to sterilize more than 90% of them. When the DES concentration was decreased to 1 μg/cm² only 44% of the newborn female offspring were sterile although their nursing mothers had been exposed to contact with the treated paper for a period of 2 hours. The concentration of 0.1 μg/cm² was totally ineffective in causing sterilization. Treatment of nesting material with DES offers a promising means of reproductive suppression in Levant voles.  相似文献