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| Author(s): |
William Petroni Leal
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Pirassununga. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Zootecnica e Engenharia de Alimentos (FZE/BT) |
| Defense date: | 2015-09-18 |
| Examining board members: |
Adriano Bonfim Carregaro;
Daniele dos Santos Martins;
Ricardo Guilherme D'Otaviano de Castro Vilani
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| Advisor: | Adriano Bonfim Carregaro |
| Abstract | |
This study aimed evaluate the sedation and analgesia provided by morphine in tegus (Salvator merianae). Eight young animals were used, of both sexes, weighing between 300 and 1800gr, which underwent three treatments: G5 - 5 mg / kg of morphine intramuscularly (IM); G10 - 10 mg / kg IM and G0 morphine - which received 0.5 ml of 0.9% NaCl (IM). The study was divided into two stages. The first step sedation assessed by morphine promoted by evaluating locomotor activity and through behavioral parameters. The second step was to assess the analgesia provided by morphine facing a challenge of thermal stimulus. In both phases, animals were assessed before treatment (baseline) and 0.5, 1, 2, 3, 4, 6, 12 and 24 hours after treatment and blinded to the treatments. The body temperature was evaluated during the course of the two stages, and both the temperature remained constant in all groups compared to baseline, except the moment 12 hours. In the comparison between groups, G5 and G10 differed G0 in moments 4 and 6 hours during the first stage and showed no differences from G0 during the second stage. In the assessment of locomotor activity, G0 remained constant at all times over the baseline, except at 12 hours, G5 showed different from baseline at times 0.5, 4 and 12 hours and G10 times between 0.5 hours and 12 hours. In the comparison between groups, G5 was lower than G0 and the same of G10 at times 0.5, 3 and 4 hours, however was higher than G10 and the same as G0 in times 1.2 and 6 hours. The behavioral parameters showed difference between G5 and baseline at times 2 and 4 hours and G10 and baseline at times 3 and 6 hours, in comparison between groups G5 and G10 were different in at 2 and 4 hours, and G10 and G0 were different at 1 to 6 hours. G5 and G10 were the same at all times, except at 6 hours after treatment. The evaluation of analgesia showed G0 equal to baseline at all times except at 12 hours after treatment, as G5 and G10 showed increased tolerance to thermal stimulus at times 0.5, 1 and 12h and at times 2, 3, 4, 6 and 12 hours, respectively. Comparison between groups showed a longer time for the withdrawal hind limb, G5 is greater than G0 at times 0.5, 1 and 4 hours and G10 from 1 hour to 12 hours after treatment. Morphine causes a reduction of locomotor activity, increased score of behavioral parameters and increased time of withdrawal hind limb in a dose-dependent manner, suggesting a sedative and analgesic action in tegus. (AU) | |
| FAPESP's process: | 14/03247-0 - Evaluation of sedation and analgesia provided by morphine in tegu (Salvator merianae) |
| Grantee: | William Petroni Leal |
| Support Opportunities: | Scholarships in Brazil - Master |