scholarly journals Supplementation of Ex-Situ Biofloc to Improve Growth Performance and Enhance Nutritional Values of the Pacific White Shrimp Rearing at Low Salinity Conditions

2021 ◽  
Vol 11 (10) ◽  
pp. 4598
Author(s):  
Umaporn Uawisetwathana ◽  
Magdalena Lenny Situmorang ◽  
Sopacha Arayamethakorn ◽  
Haniswita ◽  
Gede Suantika ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Growth Performance ◽  
Culture System ◽  
Pacific White Shrimp ◽  
Ex Situ ◽  
Intensive Culture ◽  
Shrimp Culture ◽  
Promising Alternative ◽  
Low Salinity

Shrimp is an important food source consumed worldwide. An intensive aquaculture system with overuse of feed in combination with detrimental effects from climate change are serious problems leading to mass mortality of cultured shrimp. Biofloc technology is an approach to managing water quality and controlling the disease to counter the negative side of intensive culture system; however, most of the biofloc applications are naturally formed, which could be inconsistent. In this study, we employed an established optimal ratio of microbial consortium called “ex-situ biofloc (BF)” to be used as a feed supplement in shrimp cultured in a zero-water discharged system at low salinity conditions. Three feeding groups (100%commercial pellet (C), 95%C+BF, 90%C+BF) of shrimp were cultured for six weeks. The effect of an ex-situ biofloc supplement with commercial pellet reduction showed that levels of ammonium, nitrite, nitrate and phosphate were significantly decreased in water culture. Shrimp fed with ex-situ biofloc supplement with commercial pellet reduction exhibited significantly increased shrimp weight and survival, and significantly expressed growth-related genes involving lipolysis and energy metabolism higher than those fed with 100% commercial pellet. Nutritional analysis indicated a significant increase of docosahexaenoic acid (DHA) and eicosenoic acid (C20:1) concentrations in the ex-situ biofloc supplemented shrimp. This finding revealed the potential of ex-situ biofloc to manage water quality, improve shrimp growth performance and enhance shrimp nutritional value under intensive culture at low salinity conditions. The beneficial effects of the ex-situ biofloc in shrimp culture system make it a promising alternative strategy to mitigate climate change effects leading to the sustainable production of high-quality shrimp in the future.

WATER QUALITY IN AN INTEGRATED CULTURE OF WHITE SHRIMP (Litopenaeus vannamei)-TOMATO (Lycopersicon esculentum) USING LOW SALINITY GROUNDWATER IN SONORA, MEXICO

2013 ◽  
Vol 50 (2) ◽  
pp. 306-319 ◽  
Author(s):  
M. MARTIN MARISCAL-LAGARDA ◽  
FEDERICO PÁEZ-OSUNA ◽  
JOSÉ LUIS ESQUER-MÉNDEZ ◽  
ILDELFONSO GUERRERO-MONROY ◽  
ALONSO-ROMO DEL VIVAR ◽  
...  
Keyword(s):  
Water Quality ◽  
Lycopersicon Esculentum ◽  
Water Consumption ◽  
Litopenaeus Vannamei ◽  
Culture System ◽  
White Shrimp ◽  
Semiarid Region ◽  
Total N ◽  
Tomato Plants ◽  
Low Salinity

SUMMARYThe aim of this work was to test the performance of a shrimp-tomato culture system (STCS) in an arid-semiarid region (Sonora, Mexico) and to evaluate the water quality variables and phytoplankton variation of shrimp effluent and that water returning from the tomato module culture. The field study was conducted using groundwater and consisted of three circular tanks that were used for shrimp (Litopenaeus vannamei) farming and were coupled to one culture module of tomato plants (Lycopersicon esculentum). The shrimp effluent was used to irrigate the tomato plants. The yield was 11.1±0.2 kg shrimp per tank (3.9±2.0 ton ha−1) and 33.3 kg tomatoes per 45 plants (36.1±2.3 ton ha−1). During the culture, the concentrations of nutrients were (mg L−1): total N-ammonia, <0.001–0.848; N-nitrite, <0.001–1.45; N-nitrate, 5.2–172.2; dissolved reactive-P, <0.005–0.343. A total of 35 taxa belonging to three different algal classes were observed: Chlorophyta (87 to 98%), Bacilliariophyta (2 to 9%) and Cyanophyta (0–3%). This STCS allowed us to harvest the equivalent of 3.9 ton ha−1 of shrimp and 36.3 ton ha−1 of tomatoes, with a water consumption of 2.1 m3 per kg harvested of both products.

scholarly journals Bacterial Communities Associated With Penaeus vannamei Boone, 1931 Surface and Its Rearing Water in Biofloc Culture System

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
PALLAVI BALIGA ◽  
PUNEETH THADOORU GOOLAPPA ◽  
MALATHI SHEKAR ◽  
S.K. GIRISHA ◽  
RAMESH K.S. ◽  
...  
Keyword(s):  
Water Quality ◽  
Bacterial Community ◽  
Water Samples ◽  
Bacterial Communities ◽  
Culture System ◽  
Bacterial Community Composition ◽  
Pond Water ◽  
Penaeus Vannamei ◽  
Shrimp Culture ◽  
Surface Samples

The biofloc system is an ecologically sustainable shrimp culture system. The conglomerates of beneficial bacteria, algae and protozoa in pond water serve as a water quality management system and as a feed additive to the shrimps. This study aimed to characterise the microbial communities associated with the biofloc pond water and the surface of Penaeus vannamei Boone, 1931, reared in it using the Illumina Miseq sequencing technology. The multiple alpha diversity measures indicated the shrimp surface samples to be richer in diversity than the pond water samples. Analysis of the bacterial community revealed that Proteobacteria, Bacteroidetes, Planctomycetes and Cyanobacteria formed the principal phyla. There was a shift in the relative abundance of bacterial communities at each time point. The operational taxonomic units (OTU) analyses revealed that 18.38 % OTUs were shared by the pond water samples, the shrimp surface samples shared 29.35 % at the three different time points. PICRUST analysis revealed that the bacterial communities in the biofloc rearing water, and shrimp surface, were likely involved in intensive microbial metabolism and core housekeeping functions. The information generated will help understand the bacterial community composition associated with optimal water quality and shrimp health in a biofloc culture system.

scholarly journals Modified photoperiods and light intensities for grow-out production of nile tilapia (O. niloticus) under indoor tank culture system

2018 ◽  
Vol 192 ◽  
pp. 03011
Author(s):  
Marvin Cinense ◽  
Ireneo Agulto ◽  
Armando Espino ◽  
Romeo Gavino ◽  
Emmanuel Sicat ◽  
...  
Keyword(s):  
Water Quality ◽  
Light Intensity ◽  
Growth Performance ◽  
Culture System ◽  
High Water ◽  
Control Treatment ◽  
Feed Conversion ◽  
Tank Culture ◽  
Light Intensities ◽  
Set Up

The study aimed to evaluate the effect of modified photoperiods and light intensities on grow-out production of tilapia under indoor tank culture system; specifically on water quality and on growth performance of tilapia. The study was conducted inside the greenhouse and considered two factors: photoperiod (24L:0D, 20L:4D and 16L:8D); and light intensity (40 watts m-2, 60 watts m-2 and 80 watts m-2); also, a control treatment was set-up outside the greenhouse to receive the normal environmental condition. Light manipulations inside the greenhouse were able to sustain the water quality within the desirable level for tilapia cultured in tank; while control tanks shows high water quality variation. Growth performance of tilapia cultured in tank responds positively in prolonged photoperiod at different light intensities. However, light manipulation gave insignificant difference on feed conversion ratio and survival rate compared to normal condition. Results indicated that 20-hours photoperiod and 40 watts m-2 light intensity is just enough to sustain the recommended water quality and better growth performance of the cultured tilapia in indoor tank system. It can be concluded that longer photoperiod and restrained light intensity can improved the growth performance of tilapia under indoor tank culture.

scholarly journals Growth performance of three pejerrey genetic groups in intensive culture system

2014 ◽  
Vol 35 (5) ◽  
pp. 2749 ◽  
Author(s):  
Rafael Aldrighi Tavares ◽  
Sérgio Renato Noguez Piedras ◽  
João Morato Fernandes ◽  
Juvêncio Luis Osório Fernandes Pouey ◽  
Verônica Hammes Garcia ◽  
...  
Keyword(s):  
Growth Performance ◽  
Culture System ◽  
Intensive Culture ◽  
Genetic Groups
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