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Brazilian Journal of Biology
Article . 2024
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Ocimum gratissimum essential oil in the transport water of Brycon hilarii: implications at water quality, blood parameters and residues in tissue and plasma.

Authors: Oliveira, F. C.; Moreira, A. P.; Ferreira, A. L.; Costa, D. C.; Cardoso, C. A. L.; Chaves, F. C. M.; Chagas, E. C.; +1 Authors

Ocimum gratissimum essential oil in the transport water of Brycon hilarii: implications at water quality, blood parameters and residues in tissue and plasma.

Abstract

Resumo O transporte de peixes vivos é uma prática comum na piscicultura, e é certamente um dos principais problemas que afetam a homeostase dos peixes e neste cenário o uso de aditivos naturais tem-se mostrado promissor para melhorar a resistência dos peixes frente a situações adversas. Este estudo teve como objetivo avaliar o impacto do óleo essencial de Ocimum gratissimum L. (OEOG) na qualidade de água, perfil hematológico e níveis de resíduos no plasma, filé e fígado de juvenis de piraputanga (Brycon hilarii) durante um período de transporte de duas horas. Os peixes foram divididos em sacos plásticos (4 L) e expostos a três concentrações diferentes de OE OG (10, 20 e 30 mg L-1) enquanto um grupo não recebeu OEOG. Cada grupo com três repetições. Após o transporte de duas horas, foram coletadas amostras de sangue, bem como de filé e do fígado para a quantificação dos compostos do óleo essencial, que também foram mensurados no plasma. Os níveis de oxigênio permaneceram elevados durante todo o período do transporte, em todos os grupos, enquanto o pH diminuiu. A hemoglobina, CHCM e HCM aumentaram nos peixes dos grupos EOOG 20 e 30 mg L-1, em comparação ao grupo controle. No entanto, a contagem dos linfócitos e as concentrações decompostos no plasma, filé e fígado aumentaram com a concentração mais elevada de OEOG. O uso de 10 mg L-1 de OGEO na água de transporte de duas horas é promissor para garantir a sobrevivência e o bem-estar dos juvenis de Brycon hilarii (pesando 16 g), mostrando-se seguro e eficaz. A concentração residual de eugenol, composto majoritário do OGEO no filé, permanece abaixo do limite máximo da ingestão diária recomendada.

Abstract Transporting live fish is a common practice in fish farming, and is certainly one of the main problems that affect fish homeostasis. In this scenario, the use of natural additives has shown promise in improving fish resistance to adverse situations. This study aimed to assess the impact of Ocimum gratissimum L. essential oil (OGEO) on water quality, hematological parameters, and residue levels in the plasma, fillet, and liver of juvenile piraputanga (Brycon hilarii) during a two-hour transportation period. The fish were divided into plastic bags (4 L) and exposed to three different OGEO concentrations (10, 20, and 30 mg L-1), while a control group received no OGEO (three repetitions each). After the two-hour transportation, blood samples were collected, as well as portions of the fillet and liver for quantifying essential oil compounds, which were also measured in the plasma. Oxygen levels remained high throughout the transportation period, in all groups, while the pH decreased. Hemoglobin, MCHC, and MCH increased in fish exposed to OGEO concentrations of 20 and 30 mg L-1, compared to the control group. However, lymphocyte counts and the concentrations of essential oil compounds in plasma, fillet, and liver increased with higher OGEO concentrations. The use of 10 mg L-1 OGEO in the two-hour transport water is promising to ensure the survival and well-being of Brycon hilarii juveniles (weighing 16 g), showing to be safe and effective. The residual concentration of eugenol the major compound of OGEO in the fillet remains below the maximum limit of the recommended daily intake.

Keywords

QH301-705.5, piraputanga, Science, Q, Botany, composto residual, Transportation, qualidade da água, water quality, anestésico, QL1-991, Ocimum, Liver, anesthetic, QK1-989, Water Quality, Oils, Volatile, Animals, Biology (General), Characiformes, residual compound, Zoology, Water Pollutants, Chemical

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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