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Preprints

URI permanente para esta colecciónhttp://10.0.96.45:4000/handle/11056/20509

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Examinando Preprints por Materia "ACUICULTURA"

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    Aquaculture of the Sciaenidae family: main species cultured worldwide and emerging species in Latin America, offering new opportunities for aquaculture diversification
    (2024-04-09) Chacón Guzmán, Jonathan; Jiménez Montealegre, Ricardo; Hong, Wanshu; Gisbert, Enric; Ramos-Júdez, Sandra; Pérez-Urbiola, Juan Carlos; Duncan, Neil
    Abstract. Sciaenidae is the family of marine fish that has the highest aquaculture growth and production 27 in the world.
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    Inclusion of Lippia graveolens essential oil in diets for Oreochromis niloticus juveniles: Effects on growth, feed utilization, hematobiochemical parameters, histomorphometry of the intestine and liver, digestive enzymes, and bacterial challenge
    (Elsevier (Países Bajos), 2024) Garcia, Josue; Vissio, Paula; Pérez-Sirkin, Daniela; Álvarez-González, C.A.; Sepúlveda Quiroz, C.A.; Ulloa-Rojas, Juan
    Abstract. Including essential oregano oils in fish diets can promote fish growth and improve their overall health. The aim of this study was to evaluate the effects of adding dietary supplements of Lippia graveolens essential oil (oregano EO) on the growth, food consumption, hematological parameters, as well as the intestinal and liver morphology, digestive enzymes, and bacterial challenges in Oreochromis niloticus juveniles. The study involved testing four different diet levels of EO (0, 300, 600, and 1200 mg/kg). After 30 days of feeding, the oregano EO supplementation has a positive effect on the growth and feed utilization parameters, especially with treatments of 300 and 1200 mg/kg diet, which, despite showing a lower trend of feed consumption, had a higher growth performance and feed utilization. In addition, there was no evidence of adverse changes in liver and intestinal histology, indicating that L. graveolens EO does not have a negative effect at concentrations ranging from 300 to 1200 mg/kg. However, it was observed that all treatments tended to increase liver enzyme activity. Moreover, it was found that the concentration of 1200 mg/kg positively impacted the increase of intestinal enzyme activity, particularly acid proteases, chymotrypsin, and lipase. All treated groups exhibited a reduction in mortality rates compared to the control. In conclusion this study demonstrated that incorporating L. graveolens EO in fish diets could enhance their overall health, promote growth performance, and improve their bacterial resistance.