The application of bioflocs technology in high-intensive, zero exchange farming systems of Marsupenaeus japonicus

Zhao, Pei; Huang, Jie; Wang, Xiuhua; Song, Xiaoling; Conghai, Yang; Zhang, Xuguang; Wang, Guocheng

doi:10.1016/j.aquaculture.2012.03.034

Cited by 149 publications

(105 citation statements)

References 27 publications

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“…Probably, nitrifying bacteria grew along with heterotrophic bacteria in bioflocs tanks. More nitrate is generally found in nitrifying bacteria rich tanks (Zhao et al, 2012). The underwater structures in BP tanks did not affect nitrate (p > 0.05).…”

Section: Resultsmentioning

confidence: 96%

<b>Nile tilapia culture under feeding restriction in bioflocs and bioflocs plus periphyton tanks

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Rebouças

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. Intensive aquaculture systems may cause pollution in water bodies because their effluents have high levels of nutrients. The use of substrates for periphyton and the manipulation of the C: N ratio of water are technologies that can be employed to increase aquaculture yield with environmental sustainability. The present study has aimed at determining whether feeding restriction could stimulate a greater use of natural food in three different Nile tilapia rearing systems (green water, bioflocs and biophyton), without growth performance impairment. There were nine treatments with four replicates each one (36 experimental units). The animals were raised in conventional (green water) tanks, C: N-ratio adjusted tanks (bioflocs) and bioflocs + periphyton integrated tanks (biophyton). In each culture system, the artificial diet was delivered regularly or under two levels of restriction (15 and 30%). In conventional tanks, fish growth performance was reduced by feeding restriction. Ammonia and nitrite were reduced in bioflocs tanks. Underwater structures for periphyton were not able to increase ammonia and nitrite removal. In bioflocs tanks, feeding restriction of 15% did not lessen fish weigh gain. Underwater structures for periphyton have not improved fish growth performance in any aspect.Keywords: aquaculture, water quality, eutrophication.Cultivo de juvenis de tilápia do Nilo, Oreochromis niloticus em sistemas convencional, bioflocos e biofíton sob restrição alimentar RESUMO. Sistemas intensivos de aquicultura podem causar poluição de corpos hídricos, pois os efluentes gerados nesses sistemas são caracterizados pelas altas concentrações de nutrientes. O uso de substratos para perifíton e a manipulação da relação carbono: nitrogênio da água são tecnologias que podem ser empregadas no aumento da produtividade aquícola, com sustentabilidade ambiental. O presente trabalho teve por objetivo determinar se a restrição alimentar pode propiciar um maior aproveitamento do alimento natural, em três diferentes sistemas de cultivo (águas verdes, bioflocos e biofíton), sem prejuízo zootécnico. Foram constituídos nove tratamentos com quatro repetições cada um, totalizando 36 unidades experimentais. Os animais foram cultivados em tanques convencionais (águas verdes), com ajuste da relação C: N da água (bioflocos) e com integração entre bioflocos e perifíton (biofíton). Em cada sistema de cultivo, houve oferta regular ou sob restrição (15 e 30%) de ração artificial. Nos tanques convencionais, o desempenho produtivo dos peixes foi reduzido pela restrição alimentar. A presença de bioflocos reduziu a concentração de amônia e nitrito na água. A instalação das estruturas submersas em tanques com bioflocos não foi capaz de elevar a remoção de amônia e nitrito da água. Nos sistemas com bioflocos, o nível de restrição alimentar de 15% não causou prejuízo ao ganho em peso animal. A instalação de estruturas submersas para perifíton não afetou de modo significativo o peso corporal final dos peixes cultivados.Palavras-chave: aquicultur...

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Section: Resultsmentioning

confidence: 96%

<b>Nile tilapia culture under feeding restriction in bioflocs and bioflocs plus periphyton tanks

Cavalcante

Lima

Rebouças

et al. 2017

Acta Sci. Anim. Sci.

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“…At high C: N ratio, heterotrophic bacteria immobilize the ammonium ion for production of microbial protein and maintain inorganic nitrogen level within the limit (Avnimelech, 1999). Biofloc enhances the growth performance of Penaeus monodon (Anand et al, 2013a;Arnold et al, 2009;Hari et al, 2006), Litopenaeus vannamei (Wasielesky et al, 2006;Xu & Pan, 2012), Farfantepenaeus paulensis (Ballester et al, 2010) and Marsupenaeus japonicus ( Zhao et al, 2012). Apart from being a source of quality proteins, biofloc are rich source of growth promoters and bioactive compounds (Ju et al, 2008a) which enhance digestive enzymes (Xu & Pan, 2012) and health status of the cultured shrimps (Singh et al, 2005).…”

Section: Benefits Of Biofloc In Shrimp Farmingmentioning

confidence: 99%

Sustainable Growth of Shrimp Aquaculture Through Biofloc Production as Alternative to Fishmeal in Shrimp Feeds

Megahed¹,

Mohamed²

2014

JAS

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As capture fisheries are now fully exploited in Egypt, aquaculture is considered the only source for meeting the demand of seafood for rapidly growing populations in Egypt. To meet these demands for seafood, aquaculture has to grow fast and to be more intensive. Fishmeal sources from capture fisheries are fully exploited and thus become costly ingredient in fish and crustacean feed formulations. The present study evaluated biofloc technology as a sustainable alternative to fishmeal in the shrimp feeds using cheap carbon source for stimulation of the microbial biofloc growth, in addition to reduce protein content of the shrimp feeds. The shrimp were fed on three different diets (Control 45% CP, BF 25.10 and BF 30.10 ). The shrimp were cultured for 150 days. The water quality in biofloc-based pond was maintained with the promotion and development of biofloc through rice bran addition during the experiment. At the end of the experiment, the total yields of the shrimp in the two biofloc treatments were significantly higher than those of the shrimp in the control group (P < 0.05). The results indicated that promoting biofloc through carbohydrate addition in culture systems could enhance growth performance and water quality of cultured shrimp under the conditions of the present study. Feed conversion ratio (FCR) was significantly (P < 0.05) differed among treatments compared to control diet (1.51 ± 0.11; 1.66 ± 0.13 and 1.80 ± 0.10 for BF 25.10 ; BF 30.10 and control, respectively). There were significant differences (P < 0.05) in shrimp mean final weight between treatments and control diet (37.10 ± 2.22 g; 35.31 ± 1.52 g and 33.24 ± 2.17 g for BF 25.10 ; BF 30.10 and control, respectively). Mean survival (70 ± 8.30%; 66 ± 9.10% and 57 ± 11.00%, for BF 30.10 ; BF 25.10 and control, respectively. was significantly differed among treatments compared to control diet. The data suggests that substituting high-protein (Control 45% CP) with low-protein (BF 25.10 and BF 30.10 ) feed in a biofloc dominated system operated with minimal discharge may provide an alternative to improve shrimp farming technology, through improved water quality, cheaper (lower protein) feed and reduced environmental impact. The biochemical composition of the biofloc treatments did not vary significantly. Biofloc grown on BF 25.10 had higher protein content (23 ± 7 % DW) than BF 30.10 treatment (18 ± 5 %DW). The composition of the PUFAs in the biofloc showed that the treatment of biofloc with BF 25.10 contained significantly more total n-3 PUFA and total n-6 PUFA than that with treatment of BF 30.10 . The results of the present study proofed that biofloc is a possible additional nutritious aquaculture feed for shrimp.

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“…Several researchers suggested that apart from maintaining good and stable water quality, the established biofloc in the culture system can improve growth performance and feed utilisation of different shrimp species viz., P. monodon (Arnold et al, 2009), P. semisulcatus (Megahed, 2010), Farfantepenaeus paulensis (Ballester et al, 2010), P. vannamei (Xu and Pan, 2012) and Marsupenaeus japonicus (Zhao et al, 2012).…”

Section: Immunological Parameters and Challenge Trialmentioning

confidence: 99%

Biofloc based technology evaluation for nutrient dense culture system for nursery and grow-out farming of Pacific white shrimp Penaeus vannamei Boone, 1931

et al. 2017

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The concept of "biofloc technology" is changing the facet of intensive aquaculture with scope to attain high productivity in a sustainable manner. In biofloc, dense heterotrophic bacterial community is developed through C:N ratio manipulation, where the system becomes bacterial dominated rather than algae dominated and takes care of the wastes generated through in situ bioremediation. Protein is utilised in two ways; as feed for the shrimp and as microbial floc when the heterotrophic microbes convert the nitrogenous wastes into protein. It also promises a healthy rearing system, which is increasingly identified as one possible solution for disease problems especially those striking at early stages. The purpose of this study was to evaluate the effect of biofloc and periphyton technology (BPT) on the growth and immunomodulatory performance of Pacific white shrimp Penaeus vannamei during nursery and grow-out culture. The experimental BPT treatments with three tier substrate system with molasses as carbohydrate (CHO) source were compared with the conventional autotrophic system. The immunomodulation and cumulative percentage mortality upon challenge with pathogenic strain of Vibrio parahaemolyticus were assessed in the reared animals. We have successfully demonstrated the BPT based nursery and growout systems for P. vannamei with the advantage of providing significantly (p<0.05) better growth (27.6% improvement in average body weight, ABW) and feed utilisation (31% improvement in feed conversion ratio, FCR). A production level of 4-4.5 kg m -3 of water was achieved through this BPT system registering a significant improvement over the conventional system (p<0.05). The cumulative percentage mortality following pathogen challenge was significantly lower (p<0.05) in the biofloc grown shrimps compared to that of the control group, thus showing better resistance to pathogenic challenge. Furthermore, the biofloc reared shrimp did exhibit significant improvement in non-specific immune response in terms of serum phenoloxidase activity and total haemocyte counts possibly suggesting potential immunostimulatory role of the biofloc associated heterotrophic bacteria. This eco-based technology as revealed through our studies brings substantial improvement in productivity, minimising water requirement, recycling in situ nutrients and organic matter in turn improving farm biosecurity, augmentation of natural food, improvement of FCR and better health of the cultured shrimp.

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The application of bioflocs technology in high-intensive, zero exchange farming systems of Marsupenaeus japonicus

Cited by 149 publications

References 27 publications

<b>Nile tilapia culture under feeding restriction in bioflocs and bioflocs plus periphyton tanks

<b>Nile tilapia culture under feeding restriction in bioflocs and bioflocs plus periphyton tanks

Sustainable Growth of Shrimp Aquaculture Through Biofloc Production as Alternative to Fishmeal in Shrimp Feeds

Biofloc based technology evaluation for nutrient dense culture system for nursery and grow-out farming of Pacific white shrimp Penaeus vannamei Boone, 1931

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