COMPARISON OF UPPER GASTROINTESTINAL RADIOGRAPHIC FINDINGS TO HISTOPATHOLOGIC OBSERVATIONS: A RETROSPECTIVE STUDY OF 41 DOGS AND CATS WITH SUSPECTED SMALL BOWEL INFILTRATIVE DISEASE (1985 to 1990)     

Ralph C.  Weichsei. Baum  DVM  Daniel A.  Feeney  DVM  MS  David W.  Hayden  DVM  PhD 《Veterinary radiology & ultrasound》1994,35(6):418-426

It was the intent of this study to define which, if any, radiographic observations corresponded with specific causes of diffuse infiltrative small bowel disease and if radiographic findings could differentiate inflammatory disease from neoplastic disease and either of them from normal. Bowel spasticity, luminal narrowing, and thumbprinting tend to indicate the presence of tumor more often than inflammatory disease. Increased bowel gas in cats and barium adhesion in dogs and cats suggest that a component of enteritis is present. Decreased bowel gas in dogs is more often associated with obstructive disease, but is not helpful in differentiating diffuse inflammatory disease from diffuse neoplastic disease. While several observations that can foster differentiation of neoplastic from inflammatory disease were found, this study also indicated that the UGI lacks a high degree of predictive value other than to indicate the presence of infiltrative small bowel disease.  相似文献   

Determination of “normal” levels and upper limit values of trace elements in soils     

L. O. De Temmerman  M. Hoenig  P. O. Scokart 《植物养料与土壤学杂志》1984,147(6):687-694

To determine “normal” levels of trace elements in soils, soil samples taken all over Belgium were analysed. The selection of the sampling places was based on the geological substrata, from which the soils originate and on the texture class to which they belong. The elements As, B, Be, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Sb, Se, Ti, V and Zn were determined using an extraction method with strong acids. The found concentrations were called “total acid extraction concentrations”, although this extraction does not extract all the elements which are incorporated into the minerals. This has been done, however, by arc emission spectrography which was applied to determine the elements Ag, B, Co, Cr, Ga, Mo, Ni, Sn, Sr and V. The greatest difference between the “overall total” concentrations and the “total extractable concentrations” were found for chromium. Based on the obtained results, an upper limit for normal levels of trace elements was fixed. For Ag, Cd, Hg, Pb and Sb, this upper limit value is almost the same for all the investigated soils irrelevant of their texture. The same conclusion could not be made for the other elements. For these elements, the soil texture and also the geological parent material, on which the soil was formed, have an influence on the upper limit value.  相似文献   

Interaction of temperature and light on growth and development of hybrid tea-rose seedlings,with reference to breeding for low-energy requirements     

D.P. De Vries  L. Smeets  Lidwien A.M. Dubois 《Scientia Horticulturae》1982,17(4):377-382

As a basis for a breeding-programme of glasshouse roses adapted to low-energy conditions (low temperature and low light intensity), growth and development of Hybrid Tearose seedlings were studied in 9 controlled environments (16, 20 or 24°C combined with 8, 16 or 24 Wm^?2 for 8 h). The percentage of flowering seedlings increased with increasing light intensity independent of temperature, rapidity of flowering was promoted by increasing both light intensity and temperature, stem length at anthesis was promoted by increasing light intensity but shortened by increasing temperature. The possibility of selecting seedlings, and consequently cultivars, adapted to low-energy conditions was discussed.  相似文献   

Distal splint bone fractures in the horse: an experimental and clinical study     

F Verschooten  F Gasthuys  A De Moor 《Equine veterinary journal》1984,16(6):532-536

An experimental and clinical study to investigate the aetiology of distal splint bone fractures is described. In vitro, extension of the fetlock did not appear to alter the position of the distal ends of the splint bones, although tension in the interosseous tendons increased. Flexion of the fetlock resulted in slight outward displacement of the distal ends of the splint bones. It is suggested that concurrent desmitis of the suspensory ligament can cause movement of the ends of the splint bones thus predisposing to a fatigue fracture. In a clinical study of 87 horses, 114 splint bone fractures were identified. In at least 70 per cent of horses, suspensory desmitis was present. Follow up information was available in 24 horses in which more than 80 per cent of the fractures healed spontaneously. Non-union fractures were not painful and did not cause lameness.  相似文献   

DIMENSIONS OF THE PROSTATIC AND MEMBRANOUS URETHRA IN NORMAL MALE DOGS DURING MAXIMUM DISTENSION RETROGRADE URETHROCYSTOGRAPHY*     

Daniel A. Feeney DVM  MS  Gary R. Johnston DVM  MS  Carl A. Osborne DVM  PhD  Michael J. Tomlinson DVM  PhD 《Veterinary radiology & ultrasound》1984,25(6):249-253

Prostatic and membranous urethral diameter was measured in 24 normal mature male Beagle dogs during maximum distension retrograde urethrocystography. This technique involved retrograde urethral distension by infusion with contrast medium until the urinary bladder was distended and the vesicourethral junction remained opened as observed by fluoroscopy. Lateral and ventro-dorsal radiographs were made during subsequent injections of 5–10 ml of contrast medium. The prostatic urethra was consistently greater in diameter than the membranous urethra. However, the numerical ratio between the prostatic urethral diameter and the membranous urethral diameter varied among these dogs by a factor of 2 at the numerical extremes.  相似文献   

Within-herd spread of contagious bovine pleuropneumonia in Ethiopian highlands     

Lesnoff M  Laval G  Bonnet P  Abdicho S  Workalemahu A  Kifle D  Peyraud A  Lancelot R  Thiaucourt F 《Preventive veterinary medicine》2004,64(1):27-40

Contagious bovine pleuropneumonia (CBPP) is a major threat for cattle health and production in Africa. This disease is caused by the small-colony type of Mycoplasma mycoides subspecies mycoides (MmmSC). Transmission occurs from direct and repeated contacts between sick and healthy animals. Veterinary services recently reported a resurgence of CBPP in the province of West Wellega, in the Ethiopian highlands. A research program was set up to estimate the epidemiological parameters of the within-herd infection spread. A follow-up survey was implemented in 71 sampled herds of the Boji district (West Wellega province). Fifteen herds were classified as newly infected and used in a serological- and clinical-incidence study. The overall 16-month cumulative sero-incidence risk was 34%. Clinical cases were recorded for 39% of the seropositive cattle; case-fatality risk was 13%. There was no evidence of benefit on infection spread of CBPP-control measures used locally by farmers (isolation or antibiotic treatments of sick animals). This might be related to a lack of power in the statistical analyses or to a quality problem for the medications used (and more generally, for health-care delivery in the Boji district).  相似文献   

Osteosarcoma with multiple metastases and subcutaneous involvement in a rabbit (Oryctolagus cuniculus)     

Mazzullo G  Russo M  Niutta PP  De Vico G 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2004,33(2):102-104

BACKGROUND: Osteogenic sarcomas are rare in rabbits, but cases involving the mandible, ribs, frontal bones, and tibia have been reported. OBJECTIVE: The purpose of this study was to describe the clinical and pathologic findings in a rabbit with osteosarcoma and multiple metastases with subcutaneous involvement. METHODS: A 1-year-old female Polish rabbit was evaluated for dysorexia, lameness, gait difficulties with the hind limbs, and the presence of 2 subcutaneous nodules, on the left thigh and in the dorsal region. A hard swelling was also present at the base of the tail. Radiographic findings revealed multiple abnormalities in several bones, which were more severe in the sacrococcygeal region and femur. Several areas of calcification involving the thorax and abdomen as well as skeletal muscles, also were noted. The thigh nodule was surgically removed, and cytologic and histologic evaluations were performed. Following the rabbit's death, postmortem radiographs were taken and necropsy was performed. Samples of tissues and organs, involved bone segments, and other subcutaneous nodules were collected and examined by cytology and histology. RESULTS: Both the subcutaneous nodules and the majority of tissues and organs contained neoplastic cells whose appearance was consistent with osteogenic sarcoma. CONCLUSION: Clinical, radiologic, and pathologic data supported a diagnosis of osteosarcoma with multiple metastases and subcutaneous involvement.  相似文献   

Immune response and antigen recognition in non-pregnant ewes experimentally infected with Neospora caninum tachyzoites     

Rettigner C  Lasri S  De Meerschman F  Focant C  Beckers JF  Losson B 《Veterinary parasitology》2004,122(4):261-271

The cellular and humoral responses as well as the antigen recognition during the acute stage of a Neospora caninum (NC) infection were investigated in non-pregnant ewes. The experimentally infected ewes developed specific lymphoproliferative and humoral responses within 2 weeks post-infection (PI). The magnitude of the cellular response showed large variations between animals. A significant decrease in the proliferative response to Con A mitogen and N. caninum, Toxoplasma gondii (TG) antigens was recorded on day 21 post-infection (PI). The humoral response and the pattern of antigen recognition were similar among infected ewes. Proteins of 44, 42, 40, 39 and 28 kDa were intensively recognized by the infected animals during the experiment. The 42 and 28 kDa antigens should be considered as useful for the diagnostic of N. caninum infection, as the intensity of recognition infection of the other antigens had decreased markedly 8 weeks post-infection. For some antigens a sequential recognition was recorded. The 59, 54 and 38-37 kDa proteins were frequently recognized by infected sera during the first weeks of the infection, but recognition of these antigens was absent or rare at the end of the experiment. These antigens could be related to the acute stage of the infection.  相似文献   

The transmission of mixed Trypanosoma brucei brucei/T. congolense infections by tsetse (Glossina morsitans morsitans)     

Van den Bossche P  De Deken R  Brandt J  Geerts S  Geysen D  Berkvens D 《Veterinary parasitology》2004,119(2-3):147-153

Laboratory experiments and field observations clearly show that tsetse flies can be carriers of mixed trypanosome infections. Question remains how easy it is for the tsetse fly to acquire such a mixed infection during the first bloodmeal. This is of particular importance in the epidemiology of Trypanosoma brucei s.l., often a cryptic infection and difficult to transmit to non-teneral tsetse flies. To determine the transmission rate of T. brucei as part of a mixed infection, teneral Glossina morsitans morsitans were fed once on cattle with a mixed (Trypanosoma brucei brucei/Trypanosoma congolense) or single (T. brucei) infection. Of the 140 flies fed on animals with a mixed infection and examined 30 days later, 4 had a metacylic T. brucei infection, 29 a T. congolense infection and 13 a mixed T. brucei/T. congolense infection. There was no significant difference between the transmission rate of T. brucei as a single or as part of a mixed infection. The high proportion of mixed T.b. brucei/T. congolense infections was explained best by a model implying that if a fly is refractory to T. congolense, it is also refractory to T.b. brucei and vice versa. Hence, results suggest that the transmission of T.b. brucei is affected mainly by the vectorial capacity of flies and not by concurrent trypanosome infections in the host.  相似文献   

A cross-sectional epidemiological survey of bovine trypanosomosis and its vectors in the Savelugu and West Mamprusi districts of northern Ghana     

Mahama CI  Desquesnes M  Dia ML  Losson B  De Deken R  Geerts S 《Veterinary parasitology》2004,122(1):1-13

The epidemiology of bovine trypanosomosis was investigated in two districts (Savelugu and West Mamprusi) of Northern Ghana with different land use and environmental characteristics. The land use intensity and environmental change was suspected to be higher in the Savelugu District. A cross-sectional entomological survey conducted along the White Volta river and its tributaries confirmed the presence of only Glossina palpalis gambiensis and G. tachinoides. The challenge index as measured by the product of tsetse density and tsetse infection rate was much higher in the West Mamprusi (19.6) than in the Savelugu district (4.7). A total of 1013 cattle (508 in Savelugu and 505 in West Mamprusi) were bled from a random selection of 16 villages in the Savelugu District and 13 villages in the West Mamprusi District. Blood samples were examined for trypanosomes by the buffy coat technique (BCT). Blood samples that were positive in the BCT or negative in the BCT but with packed cell volume (PCV) values below 21 were further tested with a polymerase chain reaction for trypanosomal DNA. Plasma samples of all cattle were serologically tested with an indirect ELISA for trypanosomal antibodies. The parasitological and serological prevalence of bovine trypanosomoses was significantly higher in West Mamprusi (16 and 53%, respectively) than in Savelugu District (8 and 24%, respectively). An evaluation of animal health at the village herd level, using PCV as an index of anaemia, provided various epidemiological scenarios prevalent in the entire study area.  相似文献