scholarly journals Influence of pyroligneous extract on water quality and productive performance of Penaeus vannamei

2019 ◽  
Vol 5 (12) ◽  
pp. 33471-33487
Author(s):  
Thales da Silva Moreira ◽  
Ana Luzia Assunção Cláudio Araújo ◽  
Thiago Bastos Bezerra Menezes ◽  
Kamar Porto Nascimento Filho ◽  
Rebeca Larangeira Lima ◽  
...  
2020 ◽  
Vol 48 (2) ◽  
pp. 197-206
Author(s):  
Emmanuel Martínez-Montaño ◽  
Gustavo A. Rodríguez-Montes de Oca ◽  
José C. Román-Reyes ◽  
Rosario Pacheco-Marges ◽  
Alejandro Llanos ◽  
...  

Silicon dioxide has been used in aquaculture to increase the abundance of diatoms; however, its relationship with water quality or productive performance has not been investigated. Our study evaluated the effect of diatomite on water quality, growth performance and proximate composition of Penaeus vannamei reared in seawater (E1) and brackish water (E2) with biofloc. Two independent experiments (E1 and E2), each one with three treatments with biofloc were evaluated: treatments D with a weekly addition of diatomite (10 g m-3); the treatments D plus a continuous inoculum of diatom Chaetoceros muelleri (DD); and only biofloc like control, for E1 was used post-larvae with an initial body weight (IBW) of 0.0075 g; while in E2 was used juvenile with an IBW of 1.42 g. After seven weeks in E1, non-significant differences were registered in survival, weight gain (WG), specific growth rate (SGR) and feeding conversion rate (FCR) between DD treatment and control. However, in E2, the treatment D showed significantly higher WG (9.83 g) and SGR (4.25% d-1) compared to control (7.64 g and 3.86% d-1, respectively). Conversely, the FCR was lower in treatment D (1.16) compared to control (1.49). Non-significant differences were recorded in the proximate composition for shrimp, periphyton, and biofloc, among treatments in both experiments. Levels of nitrogenous wastes were similar among treatments. While in E2, the concentration of settleable solids was significantly higher in treatments with diatomite compared to control. Our results recommend the use of diatomite to improve the growth performance of shrimps cultured in brackish water with biofloc.


2019 ◽  
Vol 47 (3) ◽  
pp. 449-455 ◽  
Author(s):  
Eulalio Arambul Munoz ◽  
Jesus Ponce Palafox ◽  
Raul De Los Santos ◽  
Eugenio Aragon Noriega ◽  
Guillermo Rodriguez Dominguez ◽  
...  

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
PALLAVI BALIGA ◽  
PUNEETH THADOORU GOOLAPPA ◽  
MALATHI SHEKAR ◽  
S.K. GIRISHA ◽  
RAMESH K.S. ◽  
...  

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.


Author(s):  
Ramamoorthy Saraswathy ◽  
Moturi Muralidhar ◽  
Das Sanjoy ◽  
Periyamuthu Kumararaja ◽  
Sukumaran Suvana ◽  
...  

Aquaculture ◽  
2019 ◽  
Vol 503 ◽  
pp. 312-321 ◽  
Author(s):  
Jesus T. Ponce-Palafox ◽  
Ángel Alcalá Pavia ◽  
Dalia G. Mendoza López ◽  
José Luis Arredondo-Figueroa ◽  
Fabiola Lango-Reynoso ◽  
...  

2021 ◽  
Vol 49 (2) ◽  
pp. 193-201
Author(s):  
Daniel Paredes-López ◽  
Rizal Robles-Huaynate ◽  
Carmela Rebaza-Alfaro ◽  
José Delgado-Ramírez ◽  
U. Aldava-Pardave

At inadequate stocking density, fish generally show different physiological responses. The effects of stocking density on Arapaima gigas larvae productive parameters have been determined in a previous study. This study aimed to evaluate the effect of the stocking density on the water quality, hematological and biochemical profile, and productive performance of juvenile A. gigas. One hundred and eighty twelve months old, A. gigas were distributed into tanks using initial densities of 103.90, 157.95 and 220.11 kg m-3 with three replicates. Ammoniacal nitrogen, carbon dioxide, dissolved oxygen pH, alkalinity, and hardness were determined using a LaMotte Fish Farm 9, AQ-2 model, Maryland, USA, freshwater test kit. Blood samples were taken at 13, 14, and 15 months old by pricking the caudal vein and profiles of glucose (Glu), total protein (TP), albumin, aspartate transaminase (AST), alanine transaminase (ALT), and urea, were determined in blood serum. Rearing water was saturated in ammoniac nitrogen, carbon dioxide, and dissolved oxygen but have not changed with the increase of stocking density (P < 0.05), Erythrocyte's count (EC) diminished (P < 0.05), nonetheless, hemoglobin, mean concentration hemoglobin (MCH) and mean cell volume (MCV) increased (P < 0.05). Albumin, AST, ALT and urea diminished at 220.11 kg m-3 stocking density (P < 0.05). The feed intake increased, final biomass gain was 100.26 ± 19.00, 119.10 ± 13.95, and 130.24 ± 08.07 kg m-3, but did not change as density increased (P < 0.05). Juveniles of A. gigas showed no variation in productive performance with an increase in the stocking density. Furthermore, hematological and biochemical adapting profile to high stocking densities characterized this species.


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