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The objectives of this work were to cause the Glässer's disease (GD) in primary specific pathogen free piglets after experimental infection, to observe the clinical symptoms and to examine the influence of the infection on the haematological parameters. GD was caused by experimental infection of Haemophilus parasuis in seven to eight weeks old specific pathogen free piglets. In relation to the infection route the morbidity was high (83-100%) and 20% of the infected piglets died. Based on the physical examination fever, respiratory distress, cramps and paralysis were observed which are typical for GD. Arthritis and nerval symptoms are also typical but less common in Glässer's disease. PCV was significantly decreased and WBC significant increased before the piglets were euthanatized.

This study describes the bacteriological and mycological investigation of 212 ear swab samples of dogs with an otitis externa. 11 samples were sterile. Malassezia pachydermatis could be cultivated in 72.1% of all samples, in 21.9% of these cases in pure culture. In 27.9% of all samples only bacteria were found. Coagulase-positive haemolytic Staphylococcus and Malassezia pachydermatis were isolated together in 31.8% of all ear swab samples. Pseudomonas aeruginosa could be detected in 22.9%, haemolytic Streptococcus in 8.0%. The evaluation of antibiograms showed little resistance of staphylococcus to most common antibiotics or chemotherapeutics respectively, but the growth of Pseudomonas aeruginosa and especially Proteus spec. was only inhibited by a few substances.

In this study 78 cats with osteosarcoma were identified from biopsy logs and evaluated retrospectively regarding breed, sex, and age distribution, tumor location, clinical symptoms, radiographic findings, biologic behavior of the neoplasm, and outcome following therapy. There was no significant breed or sex prediffection among the cats. The average age was 10.1 years, with a range of less than one to over 17 years. 36 (46%) of the osteosarcomas were localized in the bones of the limbs, 42 (54%) were found in flat or irregular bones. The hind limbs (25 cases) were affected significantly more often than the front limbs (10 cases). The most prevalent sites were the distal femur, proximal tibia, the humerus and the digits. Four of the tumors occurred after osteosynthesis of a previous fracture. In most of the cats limb tumors were associated with chronic lameness. The skull was the most common site for tumors of the flat and irregular bones (35 cases), which involved the oral cavity in 27 cases. The most common symptoms were dental problems, deformations of the skull, and nasal discharge. The remaining tumors of the flat and irregular bones were located in the pelvis (3), vertebrae (2), scapula (1), and rib (1). Radiographic findings were very variable and ranged from lytic to purely osteoproliferative forms. With tumors of the flat and irregular bones, tumor recurrence was a common cause for euthanasia. Animals with tumors of the limbs had a good prognosis following amputation.

Gas bubble disease (GBD), a non-infectious, environmentally/physically induced trauma, is caused by an increase in the dissolved gas pressure above the ambient air pressure (supersaturation). Frequently the cause is an increased partial pressure of nitrogen-especially in spring-/groundwater. All fish species as well as amphibians and aquatic invertebrates are susceptible. Fish species and age groups are different sensitive; swim up fry is very endangered. The disease may occur in a chronic form at approximately 103% and in an acute form at above 110/115% total gas pressure (TGP). Fish, especially fry, with the chronic form die slowly without symptoms. The clinical symptoms of the acute form are disorientation, subcutaneous emphysema, embolism, exophthalmus mostly only on one side, swimming near the water surface with darkened skin, haemorrhages and high mortality. Losses increase with increased TGP. Generally, mortality in the chronic form increases by secondary infections of emphysematous tissue. As technical processes may be the cause for an increased total gas pressure, such as water pumping, heating water or mixing cold with warm water, in this context we could speak from a "technopathy". The following "therapeutic" measurement is recommended: avoid causal factors, transfer damaged fish in expanded water, turn off the cause, compensate the pressure in deeper water, if possible.

Psittacines embody in an ideal fashion the child-like characteristics that humans adore. Animal lovers are unable to resist their expressive eyes, brightly coloured plumage, tameness and mimicry of human speech. The desire of pet-owners to have a tame, speaking bird with a very strong bond to its owner is achieved through hand-rearing, but this results in psychoreactive behavioural abnormalities in these highly social birds due to abnormal fixation. The signs and causes of these behavioural abnormalities, also called cage neuroses, are explained. The complex of feather-plucking, feather-ingestion and self-mutilation is considered in depth, and there are numerous illustrations.

A 13-year-old warmblood mare was presented because of progressive weight loss, general weakness and trembling. On examination the horse stood with its head lowered and the limbs placed under the body. On lifting its head spasms of the neck muscles could be observed. At the same time the horse developed trembling over the lower neck and muscle fasciculations continued over the whole body. Additional signs included frequent recumbency, polyphagia and facial hyperaesthesia. The horse showed no signs of ataxia. Haematology was normal. Blood biochemistry revealed slight increased aspartate aminotransferase (AST: 1060 U/I) and creatine kinase levels (CK: 441 U/I). Based on the clinical findings equine motor neuron disease was diagnosed. The horse was euthanatized due to poor prognosis and the progression of symptoms. The typical neurodegenerative changes found on histological examination of the spinal cord confirmed the diagnosis.

Many veterinary practices possess an anesthetic machine with a rebreathing system, and therefore the facility to induce anesthesia under more cost-effective reduced fresh gas flow conditions in a semi-closed system. However, as the fresh gas flow is frequently far too high, the rebreathing element is used rarely or not at all, making the anesthesia unnecessarily expensive. The relationships between the fresh gas setting and the final concentrations of expired air are discussed, and experience in 53 dogs with minimal flow anesthesia (500 ml/min), an extreme variant of anesthesia induction using a semi-closed system with minimal excess gas volume and a high proportion of rebreathed gas, is described.

The QBC-Vet Autoread-System (QBC = Quantitative Buffy Coat) is an advanced version of the OBC-Vet Haematology-System, to which an automatic reader and a printer have been added. In addition to the determination of haematocrit, haemoglobin, MCHC, white blood cell, granulocyte, lympho-/monocyte and platelet counts, measurement of eosinophils and neutrophils in dogs, and the estimation of reticulocytes and nucleated red blood cells in both dogs and cats are possible. The aim of this study was to evaluate the QBC-Vet Autoread-System with respect to its suitability in veterinary practice. Samples collected from 213 mostly ill animals were analysed and the results compared with conventionally measured values. The system was found to be easy both in handling and interpretation of results. Accuracy was found to be good for the majority of the parameters (correlation coefficients: haematocrit r > 0.96, WBC r > 0.89). The printed buffy coat profile was found to be very useful to verify accuracy of results immediately and to prevent misinterpretations. Although this is a preliminary study with a small number of samples, the QBC-Vet Autoread-System was found to be a true improvement over the older system and will be very useful in veterinary practices.

The equine fetlock joint cavity shows ten pouches. The dorsal recess, which is oriented to the proximal side, is separated from those three pouches, which show to the distal direction, by several capsular folds. These folds are documented by means of sagittal sections through the fetlock joint. A medial/lateral recess is covered by the deep part of the collateral ligament of the fetlock joint. The collateral ligaments as well as the sesamoidean collateral ligaments are closely connected with the joint capsule, from which two capsular folds are separated. Between the part of the sesamoidean collateral ligament, that inserts to the metacarpus/metatarsus and the part that inserts to the proximal phalanx, the fetlock joint cavity pouches as Recessus palmaris/plantaris distalis medialis/lateralis. The palmar/plantar distal pouch, which lies in the median line, is covered by the Ligamentum sesamoideum rectum. This recess is narrowed down by the cruciated sesamoidean ligaments. The dominant palmar/plantar proximal recess is subdivided into several small pouches by strings or bands of the joint capsule, which can already be seen with an unaided eye.