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Use of the vacuum packaging in chemically prepared dog cadavers aiming the veterinary surgery teaching - biomechanical and microbiological analysis and evaluation of a veterinary medicine course graduating and postgraduate students


In order to avoid tissue deterioration, anatomical pieces are fixed. Fixation technique is extremely important, since it keeps tissues strong, insoluble and protected. Formaldehyde is the most used fixing material and preservative, and, although it is still very useful at anatomy labs, it's hazardous and also brings lots of environmental risks. Other agents, as ethanol, have been used as good fixing agents for birds muscle, as has the curing salt (Sodium chloride, nitrite and nitrate) been testes as preservative for anatomical pieces. Besides, it is getting more and more important to have a lot of criteria about animal utilization in research and teaching activities and, consequently, look out for alternative methods for these uses, in a way that will not cause scientific or academic losses. In this way, this research aims to evaluate the viability and biomechanical, microbiological characteristics of a anatomical technique that uses ethylic alcohol and curing salt on fixation/conservation of corpses up to 6 months. Skin and jejunum will be biomechanically tested, and fixative/conservative solutions will be microbiologically analyzed. Preliminary results, with no vacuum use, demonstrated a big potential of those agents on fixation and conservation of anatomical specimens throughout months in our laboratory, which presented good malleability and visceral aspect like the one noticed on fresh corpses. (AU)

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