Physiological and hematological responses of Nile tilapia (Oreochromis Niloticus) to different anesthetics during simulated transport conditions
| Autor: | Yvonaldo Wlademir Saldanha Bizarro, Rodrigo Diana Navarro, Giane Regina Paludo, Fernanda Keley Silva Pereira Navarro, Rafael Paiva de França, Rodrigo Fortes da Silva |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
General Computer Science
General Mathematics General Physics and Astronomy Toxicology chemistry.chemical_compound Nile tilapia Animal science medicine biology 0402 animal and dairy science General Engineering 04 agricultural and veterinary sciences General Chemistry biology.organism_classification 040201 dairy & animal science Eugenol Oreochromis Benzocaine chemistry Toxicity Anesthetic 040102 fisheries 0401 agriculture forestry and fisheries General Earth and Planetary Sciences Fish Menthol medicine.drug |
| Zdroj: | Acta Scientiarum. Technology. 38:301 |
| ISSN: | 1807-8664 1806-2563 |
| DOI: | 10.4025/actascitechnol.v38i3.28377 |
| Popis: | Minimization of stress during the transportation of live fish is essential in maintaining the welfare and performance of the animals. In order to test the hypothesis that stress during transport of fingerlings of Nile tilapia (Oreochromis niloticus) can be reduced with the aid of the anesthetics menthol, eugenol or benzocaine, we have assessed the effects of these agents at various concentrations on the physiological parameters and survival rates of fish subjected to conditions simulating those normally used in transportation. Fingerlings (N = 1200) were fasted for 24 hours and distributed in 20 L polyethylene bags (N = 50 per bag) containing 5 L of water and an anesthetic at the appropriate concentration. Fingerlings treated with menthol at 75 mg L-1, or eugenol or benzocaine at 20 mg L-1, maintained levels of plasma cortisol and glucose that were lower than those of the stressed but untreated controls and within the physiological limits of the baseline values for this species. Under these conditions, the survival rate was 100%, suggesting that stress was substantially reduced despite dense consignment. Treatments involving higher doses of the studied agents induced significant anesthetic toxicity. |
| Databáze: | OpenAIRE |
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