98-lb) 4-year-old sexually intact female Solomon Island eclectus parrot (Eclectus roratus solomonensis) was referred and evaluated for a suspected colonic obstruction.

Clinical Findings-The parrot had selleck compound a 3-day history of not passing feces and lack of appetite following treatment of dystocia that included percutaneous collapse of the egg and manual removal of egg fragments via the cloaca. During this procedure, a tear in the cloacal mucosa developed. The tear was repaired via a midline cloacotomy. Although clinically stable at the time of referral, the parrot became lethargic and bradycardic and had delayed crop emptying.

Treatment

and Outcome-A midline celiotomy and cloacotomy were performed to relieve the colonic obstruction, during which the severely distended colon ruptured. The colonic defects were closed in a simple interrupted pattern, and a serosal patch was applied by use of the adjacent duodenum. The bird recovered uneventfully from anesthesia and was passing voluminous feces with mildly increased effort within 1 hour after surgery. At 3 weeks after surgery, the parrot was passing feces with no increase in effort and had a normal appetite.

Clinical Relevance-Application of a duodenal serosal patch for repair of a colon rupture was successful in this parrot. www.selleckchem.com/products/gsk3326595-epz015938.html Gastrointestinal obstruction is rare in birds, but should be considered in birds that have regurgitation, decreased fecal production, and gastrointestinal

dilation. Because birds lack an omentum, serosal patching with adjacent duodenum should be considered as a viable option in avian surgery. (J Am Vet Med Assoc 2011;238:922-926)”
“Electrical field induced transitions between metallic and insulating magnetic states have been reported in various manganites and, in particular, in oxygen deficient Nd0.7Sr0.3MnO3-delta

with 0 >delta>0.2. In this series, the resistivity increases drastically with increasing delta. In polycrystals, in particular, there is mounting evidence that the oxygen deficiency and with it the resistivity is increased close to grain boundaries. find more Therefore, under a current load the electrical field near a grain boundary could be strong enough to induce a transition to a metallic state in a thin layer near the boundary. If, however, this sample part gets metallic, the electrical field is screened and the layer would return to its original state. As this looks like an electrical feedback mechanism, we expect that at least some manganites show electrical switching phenomena, and indeed these are observed. Numerical SPICE simulations and their comparison with the unusual experimental results, which were obtained with polycrystalline Nd0.7Sr0.3MnO3-delta and Pr0.7Ca0.3MnO3 ceramic and its Sr-substitution derivates, confirm both the existence of electrical field induced transitions and of an electrical feedback mechanism. (c) 2009 American Institute of Physics. [DOI: 10.1063/1.