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Can photoperiod improve growth performance and antioxidant responses of pacu (Piaractus mesopotamicus) reared in recirculation aquaculture systems?
Presa, Liliane Soares; Copatti, Carlos Eduardo; Pinto, Daniel Sá Britto; Monserrat, José Maria; Garcia, Luciano.
Afiliación
  • Presa LS; Laboratório de Aquacultura Continental, Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, 96203-900, RS, Brazil.
  • Copatti CE; Programa de Pós-graduação em Aquicultura, Instituto de Oceanografia (IO), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil.
  • Pinto DSB; Instituto de Biologia, Universidade Federal da Bahia - UFBA, Salvador, BA, Brazil.
  • Monserrat JM; Laboratório de Aquacultura Continental, Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, 96203-900, RS, Brazil.
  • Garcia L; Programa de Pós-graduação em Aquicultura, Instituto de Oceanografia (IO), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil.
J Comp Physiol B ; 194(4): 443-455, 2024 Aug.
Article en En | MEDLINE | ID: mdl-38958740
ABSTRACT
The present study investigated the best photoperiod for culturing pacu (Piaractus mesopotamicus) in recirculation aquaculture systems (RAS) based on its growth performance and hematological and oxidative stress responses. Juveniles (∼ 5 g) were subjected to five treatments (in triplicate) 24 L (light)0D (dark), 15 L 09D, 12 L12D, 9 L15D, and 0 L24D for 45 days. A total of 225 pacu individuals were randomly distributed among 15 tanks of 210 L (n = 15 per tank). Zootechnical, hematological (glucose, lactate, hematocrit, and hemoglobin), and antioxidant and oxidative stress parameters (glutathione S-transferase (GST), total antioxidant capacity against peroxyl radicals (ACAP), and lipid peroxidation (LPO) were analyzed. The zootechnical parameters (e.g., weight gain, Fulton's condition factor, and specific growth rate) were better and worse with 9 L15D and 24 L0D photoperiods, respectively. The hepatosomatic index was higher and lower in the 0 L24D and 9 L15D photoperiods. Blood lactate levels and antioxidant and oxidative stress responses were increased in the longest photoperiods (15 L9D and 24 L0D). In contrast, the treatments that showed lower oxidative damage (liver, gills, brain, and muscle) were 9 L15D and 12 L12D. In conclusion, manipulating artificial light is one way to improve fish growth and health, where the best photoperiod for pacu farming in RAS is 9 L15D.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fotoperiodo / Acuicultura / Estrés Oxidativo / Antioxidantes Límite: Animals Idioma: En Revista: J Comp Physiol B Asunto de la revista: BIOQUIMICA / FISIOLOGIA / METABOLISMO Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fotoperiodo / Acuicultura / Estrés Oxidativo / Antioxidantes Límite: Animals Idioma: En Revista: J Comp Physiol B Asunto de la revista: BIOQUIMICA / FISIOLOGIA / METABOLISMO Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania