[Acute outbreak of lameness due to inflammatory claw disease in a beef herd]. / Akuter Ausbruch von Lahmheit infolge entzündlicher Klauenhauterkrankungen in einem Mastbetrieb.

INTRODUCTION: Several young bulls in a beef farm showed large, foul-smelling skin lesions in the plantar region of the coronary band and in the interdigital space. Some of the animals also had a painful, warm swelling in the palmar fetlock area. All bulls were lame (score 4/5), the most severely affected animal had a lameness score of 5/5. Initial local treatment was unsuccessful, therefore the animals received parenteral antimicrobial treatment leading to improvement of clinical signs and weight bearing in most animals. However, several animals were slaughtered prematurely due to severe foot lesions. The diverse clinical picture did not allow for diagnosing one specific claw affection without further diagnostic investigations. Histopathological and bacteriological examinations confirmed the diagnosis of digital dermatitis (DD) in combination with an interdigital phlegmon, whereby five of the seven examined specimens were positive for one or more Treponema spp. Treponemes belong to the spirochetes, the ones commonly involved in DD in dairy cows include Treponema medium, Treponema phagedenis and Treponema pedis. The last two species were detected in the present cases. The clinical findings and results of diagnostic investigations indicate that a severe form of DD complicated by a secondary infection and interdigital phlegmon caused an outbreak of severe lameness in young bulls in a beef farm. Single or combined claw diseases can be associated with severe losses not only in dairy but also in beef herds.

INTRODUCTION: Plusieurs jeunes taureaux dans une exploitation d'engraissement ont présenté, en particulier aux membres postérieurs, des lésions étendues et malodorantes au niveau plantaire de la couronne, qui s'étendaient jusqu'à l'espace interdigital. Certains animaux présentaient une enflure chaude et très douloureuse dans le pli du boulet. Les animaux étaient fortement boiteux (4/5), le taureau le plus atteint présentait une boiterie très sévère (5/5). Un traitement initial local a été mis en place, cependant, en l'absence de succès thérapeutique, les animaux ont été ensuite traités par voie parentérale avec un antibiotique, ce qui permis de réduire la sévérité du tableau clinique et d'améliorer la charge des membres atteints. En raison de la gravité des lésions, plusieurs animaux ont toutefois dû être abattus prématurément. Au vu de la diversité du tableau clinique, la maladie n'a pas pu être attribuée à une maladie des onglons particulière sans clarification supplémentaire du diagnostic. Un diagnostic de dermatite digitale en combinaison avec un phlegmon interdigital a été confirmé par l'analyse histopathologique ainsi que l'examen bactériologique: cinq des sept écouvillons examinés étaient positifs pour un ou plusieurs Treponema spp. Dans la famille des spirochètes, Treponema medium, Treponema phagedenis et Treponema pedis sont les tréponèmes le plus souvent impliqués dans la dermatite digitale chez les vaches laitières. Les deux germes mentionnés en dernier ont été mis en évidence dans les échantillons prélevés sur les taureaux d'engraissement décrits ici. L'image clinique et les résultats d'analyses des échantillons examinés suggèrent qu'une forme sévère de dermatite digitale compliquée par une infection secondaire et le développement d'un phlegmon interdigital s'est développée lors de l'épidémie de forte boiterie observée dans une exploitation d'engraissement. Les maladies des onglons, individuellement ou en combinaison, peuvent donc occasionner des pertes importantes dans les exploitations d'engraissement.

A multiarm randomized field trial evaluating strategies for udder health improvement in Swiss dairy herds.

The aims of this study were to quantify the effectiveness of specialist advice about udder health in Swiss dairy herds and to compare 3 different udder health improvement strategies against a negative control group. In 2010, 100 Swiss dairy herds with a high (between 200,000 and 300,000 cells/mL) yield-corrected bulk milk somatic cell count (YCBMSCC) were recruited for a 1-yr multiarm randomized field trial. The herds were visited between September and December 2011 to evaluate udder health-management practices and then randomly allocated into 1 of 4 study arms containing 25 herds each. The negative control study arm received neither recommendations for improving udder health nor any active support. The remaining 75 farmers received a herd-specific report with recommendations to improve udder health management. The positive control study arm received no further active support during 2012. The veterinarian study arm received additional support in the form of monthly visits by their herd veterinarian. Finally, the study group study arm received support in the form of bimonthly study group meetings where different topics concerning udder health were discussed. One year later, implementation of recommendations and changes in udder health were assessed. Of the recommendations given, 44.3% were completely implemented, 23.1% partially, and 32.6% were not implemented. No differences in implementation of recommendations were noted between the 3 study arms. At study enrollment, farmers were asked for the study arm of their preference but were subsequently randomly assigned to 1 of the 4 study arms. Farmers that were assigned to the study arm of their preference implemented more recommendations than farmers assigned to a study arm not of their preference. No decrease in the within-herd prevalence of cows that had a high (≥200,000 cells/mL) composite somatic cell count was observed in herds that had a YCBMSCC ≥200,000 cells/mL at the start of intervention. However, the 3 study arms with intervention (positive control, the veterinarian, and the study groups) prevented an increase in the within-herd prevalence of cows that had a high somatic cell count in herds with a low YCBMSCC at the start of the intervention compared with the negative control study arm. In the year after sending the report, herds assigned to the study group study arm had a reduced incidence rate of treated mastitis cases in comparison with the year before sending the report.

Genotype-specific risk factors for Staphylococcus aureus in Swiss dairy herds with an elevated yield-corrected herd somatic cell count.

Bovine mastitis is a frequent problem in Swiss dairy herds. One of the main pathogens causing significant economic loss is Staphylococcus aureus. Various Staph. aureus genotypes with different biological properties have been described. Genotype B (GTB) of Staph. aureus was identified as the most contagious and one of the most prevalent strains in Switzerland. The aim of this study was to identify risk factors associated with the herd-level presence of Staph. aureus GTB and Staph. aureus non-GTB in Swiss dairy herds with an elevated yield-corrected herd somatic cell count (YCHSCC). One hundred dairy herds with a mean YCHSCC between 200,000 and 300,000cells/mL in 2010 were recruited and each farm was visited once during milking. A standardized protocol investigating demography, mastitis management, cow husbandry, milking system, and milking routine was completed during the visit. A bulk tank milk (BTM) sample was analyzed by real-time PCR for the presence of Staph. aureus GTB to classify the herds into 2 groups: Staph. aureus GTB-positive and Staph. aureus GTB-negative. Moreover, quarter milk samples were aseptically collected for bacteriological culture from cows with a somatic cell count ≥150,000cells/mL on the last test-day before the visit. The culture results allowed us to allocate the Staph. aureus GTB-negative farms to Staph. aureus non-GTB and Staph. aureus-free groups. Multivariable multinomial logistic regression models were built to identify risk factors associated with the herd-level presence of Staph. aureus GTB and Staph. aureus non-GTB. The prevalence of Staph. aureus GTB herds was 16% (n=16), whereas that of Staph. aureus non-GTB herds was 38% (n=38). Herds that sent lactating cows to seasonal communal pastures had significantly higher odds of being infected with Staph. aureus GTB (odds ratio: 10.2, 95% CI: 1.9-56.6), compared with herds without communal pasturing. Herds that purchased heifers had significantly higher odds of being infected with Staph. aureus GTB (rather than Staph. aureus non-GTB) compared with herds without purchase of heifers. Furthermore, herds that did not use udder ointment as supportive therapy for acute mastitis had significantly higher odds of being infected with Staph. aureus GTB (odds ratio: 8.5, 95% CI: 1.6-58.4) or Staph. aureus non-GTB (odds ratio: 6.1, 95% CI: 1.3-27.8) than herds that used udder ointment occasionally or regularly. Herds in which the milker performed unrelated activities during milking had significantly higher odds of being infected with Staph. aureus GTB (rather than Staph. aureus non-GTB) compared with herds in which the milker did not perform unrelated activities at milking. Awareness of 4 potential risk factors identified in this study guides implementation of intervention strategies to improve udder health in both Staph. aureus GTB and Staph. aureus non-GTB herds.

[Skin manifestations in liver diseases]. / Hauterscheinungen bei Lebererkrankungen.

Hepatobiliary disease is often associated with cutaneous manifestations. The pathogenesis is not always clear. Apart from porphyria cutanea tarda, the cutaneous manifestations are not specific. Besides changes of skin color and nails, alterations in hair growth, cutaneous vasculature and connective tissue may be seen. Many patients suffer from pruritus.

[Sneddon syndrome]. / Sneddon-Syndrom.

A 44-year-old female with Sneddon's syndrome, i.e. generalized racemose livedo and recurrent cerebrovascular disease, is presented. Significant levels of IgG anticardiolipin antibodies were found in her serum.

PIP: The entity of generalized livedo racemose and cerebrovascular bleeding disorders was introduced in 1965 by I. B. Sneddon describing 5 cases. it is not clear what role oral contraceptives and smoking play in the etiology of this syndrome. The case of a 44-year old multipara is described who had taken pills up to 1980 and smoked 5-10 cigarettes a day. In 1980 just before age 35 she suffered an apoplectic insult with hemisyndrome on the left side that she recovered from. An acute hypoglossal, and trigeminal paresis appeared on the left side. Computer tomogram showed a hypodense field in the area of both hemispheres of the brain. An audible mesosystolic click led to the diagnosis of suspecting cerebral embolism with mitral valve prolapse. Therapy was started with thrombocyte aggregation inhibitors. Although the prolapse could not be showed by echocardiography, the frontal mitral valve was slightly thickened. Another hospitalization in 1985 owing to a recurring attack of vertigo revealed higher blood pressure. She received betablocker treatment. In 1987 sudden weakness in the left arm and speech disorders ensued, and skin color alterations were manifest characteristic of generalized racemose livedo. Skin necrosis appeared on both toes. Sneddon syndrome was diagnosed, and full anticoagulation therapy was started with cumarin. The sensomotoric and speech symptoms receded only slightly. In 1988 a light cerebral insult occurred with the deterioration of the speech disorder. Laboratory finding showed immunoglobulin G (IgG) anticardiolipin antibodies (ACA) with 255 U/ml (normal range 0-10 U/ml), and normal IgM anticardiolipin antibodies with 8 U.ml (range of 0-10 U.ml). ACA has been detected in patients with lupus erythematosus and racemose livedo indicating the possible association of Sneddon syndrome with systemic lupus erythematosus.