Effect of biofloc technology on growth, digestive enzyme activity, hematology, and immune response of genetically improved farmed tilapia (Oreochromis niloticus)

Long, Lina; Yang, Jing; Li, Yuan; Guan, Chongwu; Wu, Fan

doi:10.1016/j.aquaculture.2015.05.017

Cited by 257 publications

(186 citation statements)

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“…The high values of crude protein were similar to the results of previous research endeavours (Long, Yang, Li, Guan, & Wu, 2015;Maic a, de Borba, & Wasielesky, 2012). The high values of crude protein were similar to the results of previous research endeavours (Long, Yang, Li, Guan, & Wu, 2015;Maic a, de Borba, & Wasielesky, 2012).…”

Section: Discussionsupporting

confidence: 90%

Effect of biofloc technology on water quality and feed utilization in the cultivation of gibel carp (Carassius auratus gibeliovar. CAS III)

Han

Zhu

et al. 2018

Aquac Res

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This study was designed to use sucrose as carbon source to investigate the effect of biofloc technology on water quality and feed utilization in the cultivation of gibel carp (Carassius auratus gibelio var. CAS III). Three isolipidic and isoenergetic diets were formulated containing graded levels of dietary protein (257.4, 300.7 and 353.4 g/kg). The control group (P34) was fed with 353.4 g/kg protein diet without biofloc. Three biofloc treatments (P24 + B, P29 + B and P34 + B) were fed with the three diets with daily sucrose supplementation and continuous air inflation. The results found that the sucrose supplementation could generate biofloc and increased biofloc volume (BFV, p < 0.05). The concentration of total ammonia nitrogen (TAN), nitrate nitrogen (NO 3 -N) and the total phosphorus (TP) of all tanks decreased in biofloc groups, and the total nitrogen (TN) of P24 + B treatment tanks was significantly lower than that of the control group (p < 0.05).The growth of P24 + B and P29 + B group was similar with that of control group (p > 0.05). Feed conversion ratio (FCR) of P29 + B was lower than P24 + B and P34 + B (p < 0.05). Protein retention efficiency (PRE) of P24 + B group was significantly higher than other treatments (p < 0.05). Phosphorus retention efficiency (PhRE) of P24 + B group was the highest among all treatments. Compared with the control group, P29 + B group had an improved total antioxidant capacity (T-AOC), superoxide dismutase (SOD) activity and contained the lowest malondialdehyde level (MDA). The present results indicated that low-protein diet is more suitable for gibel carp in zero-water exchange biofloc system compared with highprotein diet. K E Y W O R D Sbiofloc, Gibel carp (Carassius auratus gibelio), saving dietary protein, water purifying

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Section: Discussionsupporting

confidence: 90%

Effect of biofloc technology on water quality and feed utilization in the cultivation of gibel carp (Carassius auratus gibeliovar. CAS III)

Han

Zhu

et al. 2018

Aquac Res

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“…Un efecto positivo del sistema biofloc en los parámetros productivos de la tilapia O. niloticus fue encontrado en el presente estudio: Mejora de la conversión alimenticia, además de altas tasas de supervivencia e incremento del rendimiento de cultivo, similar a lo encontrado por LONG et al (2015), LUO et al (2014) y PÉREZ-FUENTES et al (2016. De acuerdo con AVNIMELECH (2007), la biomasa producida en los sistemas biofloc se encuentra en el rango de 10-40 kg m -3 , resultando dentro de lo observado en este estudio (10-15 kg m −3 ).…”

Section: Composición Proximal (%) Tratamientounclassified

“…Este estimulo enzimático puede ser la causa del aumento de la biomasa final de los peces. Mejores resultados de eficiencia proteica de tilapias en bioflocs fueron observados por LONG et al (2015), con aproximadamente 2,59. De acuerdo con AVNIMELECH (2007), la comunidad microbiana ha demostrado ser una fuente de alimento para las tilapias, contribuyendo posiblemente con cerca del 50% del requerimiento proteico del pez.…”

Section: Composición Proximal (%) Tratamientounclassified

“…AVNIMELECH (2007) explica el potencial de la alimentación que se brinda en el cultivo de O. mossambicus, donde el pez creció rápidamente mediante el consumo exclusivo de proteína microbiana durante 24 horas. Otros autores (AVNIMELECH, 2009;PÉREZ-FUENTES et al, 2016) mencionan que la utilización de este sistema mejora: La conversión alimenticia que es el indicador de la retención proteica en organismos cultivados; La actividad enzimática; Actividad hematológica; La respuesta inmunológica de peces (LUO et al, 2014;LONG et al, 2015).…”

Section: Introductionunclassified

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Cultivo de alevinos de tilápia em sistema de bioflocos sob diferentes relações carbono/nitrogênio

et al. 2017

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RESUMONa presente pesquisa, avaliou-se o efeito da relação carbono/nitrogênio (C:N), na qualidade da água, produtividade e composição centesimal dos alevinos de Oreochromis niloticus durante 58 dias de cultivo. O desenho experimental consistiu em quatro tratamentos: um sistema convencional (controle) e três sistemas de biofloco (CN10, CN15 e CN20). Foram utilizadas 12 unidades experimentais de 0,04 m 3 , com 30 peixes (750 peixes m -3 ) com peso médio individual de 1,55±0,01 g. Verificou-se a existência de interação entre os parâmetros de qualidade da água do sistema de biofloco e os parâmetros produtivos dos alevinos de tilapia. O tratamento CN10 apresentou uma baixa produção de sólidos sedimentáveis, 38,61±0,54 mL L -1 (p<0,05), fato esse que contribuiu para o rápido crescimento dos indivíduos (21,7±2,18 g), atingindo uma produtividade final média de 15,50±0,81 kg m -3 (p<0,05). É possível concluir que o cultivo de alevinos de O. niloticus no sistema biofloco, com uma relação C:N de 10, apresentou o melhor rendimento de produção quando comparado aos outros tratamentos (CN15 e CN20).Palavras-chave: peixe, qualidade da água, crescimento, biofloco, proteína RESUMENEn la presente investigación se evaluó el efecto de la relación carbono/nitrógeno (C:N), la calidad del agua, la productividad y la composición proximal de alevines de Oreochromis niloticus durante 58 días de cultivo. El diseño experimental consistió de cuatro tratamientos: un sistema convencional (control) y tres sistemas biofloc (CN10, CN15 y CN20). Se utilizaron 12 unidades experimentales de 0.04 m 3 , con 30 peces (750 pez m -3 ) con peso promedio individual de 1.55±0.01 g. Se constató la existencia de interacción entre los parámetros de calidad de agua del sistema biofloc y los parámetros productivos de los alevines de tilapia. El tratamiento CN10 presentó una baja producción de sólidos sedimentables 38.61±0.54 mL L -1 (p<0.05), hecho que contribuyó con el rápido crecimiento de los individuos (21.7±2.18 g), alcanzando rendimientos finales promedios de 15.50±0.81 kg m -3 (p<0.05). Es posible concluir que el cultivo de alevinos de O. niloticus en sistema biofloc, con una relación C:N de 10, presentó el mejor rendimiento de producción si comparado con los otros tratamientos (CN15 y CN20).

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“…The continuous availability of bioflocs particles as an alternative food source may contribute to the higher fish survival in biofloc treatment (BFT4) by the reduction of agonistic behaviour during feeding (Almaz an-Rueda,Schrama, & Verreth, 2004;Kaiser, Weyl, & Hecht, 1995) and the cannibalism in early juveniles(Al-Hafedh & Ali, 2004). This is supported by the growing evidences on the beneficial effects of bioflocs on the immunity of some aquaculture species (among others,Ahmad et al, 2016;Ekasari et al, 2014;Long, Yang, Li, Guan, & Wu, 2015; Further study to confirm the consumption and the nutrient utilization of bioflocs by African catfish using a tracer such as stable isotope is indeed an interesting topic to be explored.The stable environment and the consumption of bioflocs might contribute to improvement of the fish health condition.…”

mentioning

confidence: 94%

Growth performance and robustness of African Catfish Clarias gariepinus (Burchell) in biofloc-based nursery production with different stocking densities

2018

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The aim of this research is to evaluate the effects of biofloc system application at different fish density on the nursery production performance and the robustness of African catfish Clarias gariepinus (Burchell) against Aeromonas hydrophila and salinity stress. An economic analysis was also performed to determine the most optimum fish density in biofloc-based African catfish nursery production. African catfish with an average body weight of 0.96 AE 0.04 g and average body length of 4.20 AE 0.46 cm, respectively, were distributed in 12 units of circular plastic-lined tanks (1,020 L). The experiment consisted of four treatments in triplicates, that is, a control without carbon source addition at a density of 4 fish/L, and three biofloc treatments at different densities, that is, BFT4 (4 fish/L), BFT6 (6 fish/L) and BFT8 (8 fish/L). Tapioca flour was used as the organic carbon source in biofloc systems and was added at an estimated C/N ratio of 10. Housing the fish in biofloc systems resulted in higher fish growth, more efficient feed utilization, higher fish robustness against A. hydrophila infection and salinity stress, as well as higher profitability of nursery production. Increasing the fish density resulted in higher mortality.However, higher number of fish produced and lower feed conversion ratio were observed in the treatments with higher density (6 and 8 fish/L). In conclusion, the application of biofloc technology at a density of 8 fish/L could be recommended to increase the production and profitability of African catfish nursery culture.

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Effect of biofloc technology on growth, digestive enzyme activity, hematology, and immune response of genetically improved farmed tilapia (Oreochromis niloticus)

Cited by 257 publications

References 45 publications

Effect of biofloc technology on water quality and feed utilization in the cultivation of gibel carp (Carassius auratus gibeliovar. CAS III)

Effect of biofloc technology on water quality and feed utilization in the cultivation of gibel carp (Carassius auratus gibeliovar. CAS III)

Cultivo de alevinos de tilápia em sistema de bioflocos sob diferentes relações carbono/nitrogênio

Growth performance and robustness of African Catfish Clarias gariepinus (Burchell) in biofloc-based nursery production with different stocking densities

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