&lt;b&gt;Water quality and survival rate of &lt;i&gt;Rhamdia quelen&lt;/i&gt; fry subjected to simulated transportation at different stock densities and temperatures

Bittencourt, Fábio; Damasceno, Danielle Zanerato; Lui, Tatiane Andressa; Signor, Arcângelo Augusto; Sanches, Eduardo Antônio; Neu, Dacley Hertes

doi:10.4025/actascianimsci.v40i1.37285

Cited by 10 publications

(10 citation statements)

References 22 publications

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“…The suruvi juveniles were highly resilient to the present study's management conditions, with animals' survival rate in all treatments being higher than more than 99.0%. These findings were consistent with those of previous studies for suruvi (Zaniboni-Filho et al, 2008) and other native catfish (Fracalossi et al, 2004;Bittencourt et al, 2018;Bogiani et al, 2018).…”

Section: Discussionsupporting

confidence: 93%

FREQUíÅ NCIA ALIMENTAR NA CRIAÇÃO DE JUVENIS DE SURUVI <i>Steindachneridion scriptum</i>

Viana¹,

Sterzelecki²,

Sugai³

et al. 2020

Bol. Inst. Pesca

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The present study aimed to determine the ideal feeding frequency of feeding for suruvi juvenile. A study was conducted over 60 days to determine the effects of feeding frequency on growth metrics, body composition, and digestive enzyme activity of juvenile suruvi (initial mean weight: 60.19 ± 10.67 g). The experimental units were 1.0 m3 circular tanks, stocked with 94 fish, connected to a recirculating aquaculture system. The feed was offered during the dark phase of the 12:12 photoperiod with the following treatments in triplicate: FF1 = once a day at 20:00; FF2 = twice a day at 20:00 h and 06:00 h; and FF3 = three times a day at 20:00 h, 01:00 h, and 06:00 h. The fish fed a commercial carnivorous fish feed, comprised of 42% crude protein, 11% lipids, 20% carbohydrates, and 4,380 kcal kg-1 of crude energy in 6.0 mm pellets. At the end of the feeding, no significant differences were observed in the growth variables, body composition of proteins and lipids, and alkaline proteases and lipase activity (p>0.05) between treatments. However, there were significant differences in amylase activity (p<0.05). Our findings demonstrated that suruvi juveniles could be sustainably fed only once a day.

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Section: Discussionsupporting

confidence: 93%

FREQUíÅ NCIA ALIMENTAR NA CRIAÇÃO DE JUVENIS DE SURUVI <i>Steindachneridion scriptum</i>

Viana¹,

Sterzelecki²,

Sugai³

et al. 2020

Bol. Inst. Pesca

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“…At the end of the experiment, the fish were slaughtered in a solution of eugenol (60 mg/L), and the morphometric data were registered Water physicochemical parameters in the two experiments were within remained at adequate levels to Rhamdia (Baldisserotto & Radunz Grandson 2004). The temperature was also within thermal comfort limits (15-34°C) for R. quelen fry as recommended by Gomes, Golombieski, Gomes, and Baldisserotto (2000) and Bittencourt et al (2018). Values of dissolved oxygen above 4.3 mg/L are recommended for a better growth of catfish (Ictalurus punctatus and R. quelen) according to Souza, Pouey, Camargo, and Vaz (2005) and R. quelen fry (Bittencourt et al, 2018) and in this study, the dissolved oxygen remained above this values.…”

Section: Sector Of Southern Brazil and Trade S/a (Bsbios) Passo Fundsupporting

confidence: 73%

“…The temperature was also within thermal comfort limits (15-34°C) for R. quelen fry as recommended by Gomes, Golombieski, Gomes, and Baldisserotto (2000) and Bittencourt et al (2018). Values of dissolved oxygen above 4.3 mg/L are recommended for a better growth of catfish (Ictalurus punctatus and R. quelen) according to Souza, Pouey, Camargo, and Vaz (2005) and R. quelen fry (Bittencourt et al, 2018) and in this study, the dissolved oxygen remained above this values. The pH of the two systems was within the recommended limits for juvenile catfish (Rhamdia quelen), which ranges from 5.0 to 9.0 (Zaions & Baldisserotto, 2000).…”

Section: Sector Of Southern Brazil and Trade S/a (Bsbios) Passo Fundsupporting

confidence: 73%

Crude glycerol inclusion in diets for post‐larvae Rhamdia voulezi and Rhamdia branneri

et al. 2019

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Brazilian freshwater fish production has increased over the years (FAO, 2018). Brazilian native species of the genus Rhamdia have great potential for fish farming because they can withstand cold winters and grow fast in the summer. These characteristics make them suitable for fish production in the South of Brazil (Diemer et al., 2012).The catfish Rhamdia voulezi and Rhamdia branneri are endemic from the Iguaçu River basin and belong to the class Osteichthyes, the order Siluriformes and the family Heptapteridae (Boockmann & Guazzelli, 2003).Studies on the nutrition of these species are essential to estimate their nutritional requirements at different life stages. A variety of by-products have been studied and tested as alternative feed sources, including crude glycerol, a by-product derived from biodiesel production. Moreover, crude glycerol has been tested in recent years as a substitute energy source to corn in the diets of poultry, pork and fish (Shields, Van Heugten, Lin, Odle, & Stark, 2011).Studying the inclusion of glycerol in the nutrition of post-larvae (R. voulezi and R. branneri) is important for enabling the use of an alternative energy source in diets, with a focus on reducing the costs of feed (Abdalla, Silva Filho, Godoi, Carmo, & Eduardo, 2008). This study aimed to evaluate the replacement of corn with crude glycerol as an energy source on performance and body composition of R. voulezi and R. branneri post larvae.Two experiments were carried out simultaneously at the Laboratory of Technology for Reproduction of Cultivated Aquatic Animals (Latraac) of Unioeste, Campus Toledo, during 60 days. The Rhamdia voulezi and Rhamdia branneri with 0.01 ± 0.001 g (SD) were randomly distributed into five treatments with three replicates each, at a density of 5 post larvae/L, totalling 30 tanks of 60 L each.The experiment was carried out in a water recirculation system with biofilters. The water temperature and dissolved oxygen were measured twice a day, and the pH was measured weekly. Water physicochemical parameters were within normal limits for the studied species (Baldisserotto & Radunz Grandson 2004), with mean temperatures of 26 ± 1.1°C for R. voulezi and R. branneri respectively. The mean dissolved oxygen and the standard deviation were 7.60 ± 0.8 mg/L for R. voulezi and 8.04 ± 0.8 mg/L for R. branneri, whereas the mean pH was 7.67 ± 0.06 for R. voulezi and 7.82 ± 0.05 for R. branneri.The treatments consisted of five inclusion levels of crude glycerol (0, 2.2, 4.4, 6.6 and 8.8%). The animals were fed until apparent satiation three times per day. Tanks were siphoned every morning to remove faeces and feed residues. Crude glycerol was supplied by Biodiesel Sector of Southern Brazil and Trade S/A (BSBIOS), Passo Fundo -RioGrande do Sul, Brazil. Five isoproteic and isoenergetic diets containing 38.6% and 3,600 kcal/kg were formulated (Table 1). The digestibility values used for diet formulation were proposed by Boscolo, Hayashi, and Meurer (2002) and Meurer, Hayashi, and Boscolo (2003).At the end of the exp...

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“…The acidification of transporting water mostly due to the accumulation of carbon dioxide discharged by fish breath (Bittencourt et al, 2018; Treasurer, 2012). Furthermore, regarding the surge of ammonia nitrogen concentration, it is a momentous concern of fish transportation (Lim et al, 2003; Urakawa & Sipos, 2020; Watson et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Effects of transporting stress on the immune responses of Asian seabass Lates calcarifer fry

Hong

Zhou

et al. 2020

Aquaculture Research

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Transportation is of high risk and cannot be avoided during the productive practice of Lates calcarifer fry. To achieve an optimal transporting protocol, the changes of physico‐chemical indexes and immune genes expression of fry after transportation were evaluated. The fish were simulated transported at the density of 7 kg/m3 for different time (T1 = 4 h, T2 = 8 h, T3 = 12 h, T4 = 16 h, T5 = 20 h, T6 = 24 h) and at three densities (D1 = 14 kg/m3, D2 = 21 kg/m3, D3 = 28 kg/m3) for 24 h. With the intensive stress, a decrease in pH and an increase in NH4+‐N were observed. At transporting density experiment, the cortisol of every group except T3 had a significant difference with the control. ALT, AST and ACP activity were all close to a rise first and then decline trend. IL‐8, TNF and IFN‐γ1 were activated to promote inflammation at different degrees of transportation pressure, while the tendency of L10 and TGF‐β1 was similar. CRP also had no significant increase under different transporting durations stress. HSP70 undertook main repair work as expression level of it increased gradually. Complement did not reach its release standard at duration experiment expect for T3 group of C3. However, density experiment had no obviously positive effects on physico‐chemical indexes and the relative expression of immune genes. The results indicated that when the transporting time exceeded 8 h at the density of 7 kg/m3, significant immune response started happening to fish. The transporting density stress has stimulated the fries but the immune response was still under the inhibited state owing to the ammonia toxicity reduction by much lower pH.

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<b>Water quality and survival rate of <i>Rhamdia quelen</i> fry subjected to simulated transportation at different stock densities and temperatures

Cited by 10 publications

References 22 publications

FREQUíÅ NCIA ALIMENTAR NA CRIAÇÃO DE JUVENIS DE SURUVI <i>Steindachneridion scriptum</i>

FREQUíÅ NCIA ALIMENTAR NA CRIAÇÃO DE JUVENIS DE SURUVI <i>Steindachneridion scriptum</i>

Crude glycerol inclusion in diets for post‐larvae Rhamdia voulezi and Rhamdia branneri

Effects of transporting stress on the immune responses of Asian seabass Lates calcarifer fry

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<b>Water quality and survival rate of <i>Rhamdia quelen</i> fry subjected to simulated transportation at different stock densities and temperatures

Cited by 10 publications

References 22 publications

FREQUí­Å NCIA ALIMENTAR NA CRIAÇÃO DE JUVENIS DE SURUVI <i>Steindachneridion scriptum</i>

FREQUí­Å NCIA ALIMENTAR NA CRIAÇÃO DE JUVENIS DE SURUVI <i>Steindachneridion scriptum</i>

Crude glycerol inclusion in diets for post‐larvae Rhamdia voulezi and Rhamdia branneri

Effects of transporting stress on the immune responses of Asian seabass Lates calcarifer fry

Contact Info

Product

Resources

About

FREQUíÅ NCIA ALIMENTAR NA CRIAÇÃO DE JUVENIS DE SURUVI <i>Steindachneridion scriptum</i>

FREQUíÅ NCIA ALIMENTAR NA CRIAÇÃO DE JUVENIS DE SURUVI <i>Steindachneridion scriptum</i>