Bovine TB: studies on the risk of herd breakdown     

Medley G  Green L  Ramirez A 《The Veterinary record》2003,152(2):59-60

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Experimental infection of turkeys with avian pneumovirus and either Newcastle disease virus or Escherichia coli     

Turpin EA  Perkins LE  Swayne DE 《Avian diseases》2002,46(2):412-422

Avian pneumoviruses (APVs) are RNA viruses responsible for upper respiratory disease in poultry. Experimental infections are typically less severe than those observed in field cases. Previous studies with APV and Escherichia coli suggest this discrepancy is due to secondary agents. Field observations indicate APV infections are more severe with concurrent infection by Newcastle disease virus (NDV). In the current study, we examined the role of lentogenic NDV in the APV disease process. Two-week-old commercial turkey poults were infected with the Colorado strain of APV. Three days later, these poults received an additional inoculation of either NDV or E. coli. Dual infection of APV with either NDV or E. coli resulted in increased morbidity rates, with poults receiving APV/NDV having the highest morbidity rates and displaying lesions of swollen infraorbital sinuses. These lesions were not present in the single APV, NDV, or E coli groups. These results demonstrate that coinfection with APV and NDV can result in clinical signs and lesions similar to those in field outbreaks of APV.  相似文献   

Not classical homeopathy          下载免费PDF全文

Drosdovech M  Neumann S  Evans D  Blake S  Peck LS  Yearout DR  Ulbrich B  Facinelli J  Delgado R  Hoberg L  Harman J  Sthamann M  Lindsay M  Kwong H  Lampru A  Lamb J  Stagmeier K  Doyle JL  Elliot J  Siemon L 《The Canadian veterinary journal. La revue veterinaire canadienne》2002,43(12):908-909

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Spontaneous gastroduodenal perforation in 16 dogs and seven cats (1982-1999)     

Hinton LE  McLoughlin MA  Johnson SE  Weisbrode SE 《Journal of the American Animal Hospital Association》2002,38(2):176-187

The records of 23 dogs and cats diagnosed with spontaneous gastroduodenal perforation (GDP) were retrospectively reviewed. Survival was 63% in dogs and 14% in cats. Rottweilers <5 years of age were overrepresented. Clinical evidence of gastrointestinal bleeding was common in dogs but not in cats. Shock was an uncommon presenting condition in dogs and was not closely linked to outcome. In fact, progression of an ulcerating lesion to GDP was not associated with marked changes in symptoms exhibited by many patients in this study. Most GDPs were associated with histopathological evidence of subacute or chronic peritoneal reaction at the time of diagnosis. This suggests that diagnostic methods employed lacked sensitivity in identifying early perforating lesions, and that dramatic signs of acute abdomen following gastroduodenal perforation may not be as common as was previously thought.  相似文献   

Quantitative study of 'flame follicles' in skin sections of Shar-pei dogs     

Ordeix L  Fondevila D  Ferrer L  Fondati A 《Veterinary dermatology》2002,13(5):261-265

This study determined the frequency of occurrence and the mean number of 'flame follicles' per skin section and assessed their diagnostic significance in cutaneous biopsies of Shar-pei dogs. The number of 'flame follicles' per section was recorded in skin sections from 42 Shar-pei dogs, of which 40 had non-neoplastic skin disease and non-atrophic dermatoses and 2 had healthy skin. Forty-two skin sections from dogs of different breeds served as control specimens, 28 of which were examples of non-neoplastic and non-atrophic dermatoses and 14 were from dogs with healthy skin. Differences among groups were analysed by means of the unpaired Student's t-test. It was concluded that 'flame follicles' were more frequent and found in significantly higher numbers in the Shar-pei group when compared with the control group suggesting that 'flame follicles' in skin sections from Shar-pei dogs do not have the same diagnostic significance as in other breeds.  相似文献   

Interactions between Plasmopara helianthi, Glomus mosseae and Two Plant Activators in Sunflower Plants   总被引：1，自引：0，他引：1  

Laura Tosi  Antonio Zazzerini 《European journal of plant pathology / European Foundation for Plant Pathology》2000,106(8):735-744

Interactions between Plasmopara helianthi, Glomus mosseae and two plant activators DL--amino-n-butyric acid (BABA) and CGA 245704 (acibenzolar-S-methyl (BTH)) in sunflower plants susceptible to downy mildew were studied in four experiments using different methods of treatment and pathogen inoculation. Both chemicals were applied as soil drenches and foliar sprays, whereas P. helianthi infection was obtained by root and cotyledon inoculations of the seedlings. Soil drenches at the rates of 50 and 100mgkg^–1 soil of BABA and BTH given 1 and 3 days before P. helianthi inoculation, respectively to mycorrhizal plants, provided moderate protection against the pathogen (about 50–55%). Morphological changes and decrease in mycorrhizal colonization in roots of BTH-treated plants and in BTH-treated mycorrhizal plants were also observed. Delay in the emergence and reduction of the root systems were more evident at the highest concentration but decreased with time. These effects were absent with the BABA treatment.Foliar spray treatment of BABA and BTH, applied at 4000 and 200µgml^–1, respectively (1 day post-inoculation) to mycorrhizal plants provided good protection (about 80%) against P. helianthi foliar infections. No effects on mycorrhizal colonization or on root systems were observed. In vitro tests on the effect of the compounds on the mycorrhizal fungus showed that the germination of G. mosseae sporocarps increased with BABA treatment whereas it was greatly inhibited by BTH treatment.  相似文献   

Panniculitis in a horse with peripancreatitis and pancreatic fibrosis.     

Laura H Waitt  Christopher K Cebra  Susan J Tornquist  Christiane V L?hr 《Journal of veterinary diagnostic investigation》2006,18(4):405-408

A 22-year-old pinto mixed breed mare was admitted for evaluation of severe colic signs and gastric reflux. Multiple nonpainful, variably sized hard masses were palpated in the subcutis over the thorax, abdomen, and hindquarters of the horse. The mare was diagnosed with sterile peritonitis and had systemically high gamma-glutamyltransferase, amylase, and lipase. Three days into treatment she became febrile with signs of persistent and mild abdominal discomfort; euthanasia was elected. Necropsy revealed peripancreatitis, pancreatic fibrosis, abdominal steatitis and panniculitis. Panniculitis associated with peripancreatitis has been described in humans and dogs but not in horses. Pathogenic models for this entity are discussed.  相似文献   

Communicating with oncology clients.   总被引：1，自引：0，他引：1  

Ruthanne Chun  Laura D Garrett 《Veterinary Clinics of North America: Small Animal Practice》2007,37(6):1013-22; v

Empathic, honest, and consistent communications that establish realistic goals and focus on quality of life (during and after therapy) for pets with cancer provide the basis of an excellent client-veterinarian relationship. From this foundation, a client can team up with his or her veterinarian to make the best possible decisions for the pet and for himself or herself regarding care for the companion animal.  相似文献   

Habitat Selection and Breeding Success in a Forest-nesting Alcid, the Marbled Murrelet, in Two Landscapes with Different Degrees of Forest Fragmentation     

Yuri Zharikov  David B. Lank  Falk Huettmann  Russell W. Bradley  Nadine Parker  Peggy P. -W. Yen  Laura A. Mcfarlane-Tranquilla  Fred Cooke 《Landscape Ecology》2006,21(1):107-120

We studied habitat selection and breeding success in marked populations of a protected seabird (family Alcidae), the marbled murrelet (Brachyramphus marmoratus), in a relatively intact and a heavily logged old-growth forest landscape in south-western Canada. Murrelets used old-growth fragments either proportionately to their size frequency distribution (intact) or they tended to nest in disproportionately smaller fragments (logged). Multiple regression modelling showed that murrelet distribution could be explained by proximity of nests to landscape features producing biotic and abiotic edge effects. Streams, steeper slopes and lower elevations were selected in both landscapes, probably due to good nesting habitat conditions and easier access to nest sites. In the logged landscape, the murrelets nested closer to recent clearcuts than would be expected. Proximity to the ocean was favoured in the intact area. The models of habitat selection had satisfactory discriminatory ability in both landscapes. Breeding success (probability of nest survival to the middle of the chick rearing period), inferred from nest attendance patterns by radio-tagged parents, was modelled in the logged landscape. Survivorship was greater in areas with recent clearcuts and lower in areas with much regrowth, i.e. it was positively correlated with recent habitat fragmentation. We conclude that marbled murrelets can successfully breed in old-growth forests fragmented by logging.  相似文献   

Habitat selection and breeding success in a forest-nesting Alcid,the marbled murrelet,in two landscapes with different degrees of forest fragmentation     

Yuri Zharikov  David B. Lank  Falk Huettmann  Russell W. Bradley  Nadine Parker  Peggy P.-W. Yen  Laura A. Mcfarlane-Tranquilla  Fred Cooke 《Landscape Ecology》2007,22(5):791-791

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