2018
DOI: 10.22458/urj.v10i2.2170
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Tiempo y dosis óptimas de fluoximesterona, para masculinización de crías del pez maya Cichlasoma urophthalmus (Percidae: Cichlidae)

Abstract: La masculinización en peces cíclidos, es de importancia capital para fines de mejora en la producción piscícola. El objeto de la presente investigación fue obtener la dosis y tiempo óptimos de exposición a la hormona fluoximesterona (FM), durante la masculinización del cíclido Maya Cichlasoma urophthalmus. Así, se probaron, dos tiempos de exposición (45 y 60 días) y cuatro dosis de andrógeno (0, 15, 30 y 60mg/kg de alimento), de manera que se tuvieron cinco tratamientos (15mg 60d, 30mg 45d, 30mg 60d, 60mg 45d … Show more

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“…At the end of the experiment, a higher growth was observed in the treatments that received the commercial blend or FM compared to that recorded in the control group. Previous reports, in terms of reproduction, sex reversal, and growth effects of FM in Nile tilapia (Moreno-Enríquez et al 2003, Torres-Hernández et al 2010, Ornelas-Luna et al 2017, Trejo-Quezada et al 2021, have concluded that, although it does not have a clear and powerful anabolic effect as 17αmethyltestosterone does (El-Saidy et al 2005, Abdelghany 2010, Hafeez-ur-Rehman et al 2014, Ajiboye et al 2015, Trejo-Quezada et al 2021), FM has shown, in some instances, a positive effect on growth at the end of the sex-reversal process (Manosroi et al 2004, Gutiérrez-Sigueros et al 2018, Ramírez-Ochoa et al 2023. Ramírez-Ochoa et al (2023) reported that FM withdrawal caused a growth depression in Nile tilapia juveniles.…”
Section: Discussionmentioning
confidence: 93%
“…At the end of the experiment, a higher growth was observed in the treatments that received the commercial blend or FM compared to that recorded in the control group. Previous reports, in terms of reproduction, sex reversal, and growth effects of FM in Nile tilapia (Moreno-Enríquez et al 2003, Torres-Hernández et al 2010, Ornelas-Luna et al 2017, Trejo-Quezada et al 2021, have concluded that, although it does not have a clear and powerful anabolic effect as 17αmethyltestosterone does (El-Saidy et al 2005, Abdelghany 2010, Hafeez-ur-Rehman et al 2014, Ajiboye et al 2015, Trejo-Quezada et al 2021), FM has shown, in some instances, a positive effect on growth at the end of the sex-reversal process (Manosroi et al 2004, Gutiérrez-Sigueros et al 2018, Ramírez-Ochoa et al 2023. Ramírez-Ochoa et al (2023) reported that FM withdrawal caused a growth depression in Nile tilapia juveniles.…”
Section: Discussionmentioning
confidence: 93%