Saline water for juvenile giant trahira during feed training

Salaro, Ana Lúcia; Campelo, Daniel Abreu Vasconcelos; Pontes, Marcelo Duarte; Tavares, Mateus Moraes; Zuanon, Jener Alexandre Sampaio; Luz, Ronald Kennedy

doi:10.1590/s1516-35982012000600004

Cited by 9 publications

(7 citation statements)

References 25 publications

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“…Várias técnicas têm sido utilizadas com sucesso, principalmente a substituição parcial de alimentos de alta palatabilidade e úmidos por rações secas (Luz et al, 2011;Salaro et al, 2012aSalaro et al, , 2012b. Apesar da existência de estudos sobre o condicionamento alimentar de juvenis de pirarucu com uso de massa de peixe como alimento úmido de alta palatabilidade, e da transição direta de alimento vivo para a dieta formulada (Pereira-Filho & Roubach, 2010;Crescêncio, 2001;Cavero et al, 2003), estes registros ainda são escassos e não apresentam técnica bem definida.…”

Section: Feed Conditioning Periods For Pirarucu Juveniles In the Feedunclassified

Períodos de condicionamento alimentar de juvenis de pirarucu na transição da alimentação de ração úmida para seca

Souza

Júnior

Fonseca

et al. 2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito de períodos de condicionamento alimentar sobre o desempenho produtivo e a sobrevivência de juvenis de pirarucu (Arapaima gigas), durante a transição da alimentação com massa de peixe moída para dieta formulada seca. Animais com 15,8±1,2 g foram avaliados com substituições graduais da dieta a cada 2, 3, 4 e 5 dias. Após 12 dias de condicionamento alimentar, as substituições a cada dois e três dias proporcionaram as maiores taxas de crescimento específico. Recomenda-se a substituição da dieta à base de peixe moído por dieta formulada seca a cada dois ou três dias.Termos para indexação: Arapaima gigas, alimento vivo, desempenho produtivo, espécie carnívora, mortalidade, treinamento alimentar. Feed conditioning periods for pirarucu juveniles in the feeding transition from moist to dry feedAbstract -The objective of this work was to evaluate the effect of feed training periods on the productive performance and survivorship of pirarucu juveniles (Arapaima gigas), during the transition from ground fish mass diet to a dry-feed diet. Animals with 15.8±1.2 g were evaluated with gradual substitutions of the diet at every 2, 3, 4, and 5 days. After 12 days from feed training, the substitutions at every two and three days provided the highest specific growth rates. The replacement of diet based on forage fish by dry formulated diet may be done every two or three days.

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Section: Feed Conditioning Periods For Pirarucu Juveniles In the Feedunclassified

Períodos de condicionamento alimentar de juvenis de pirarucu na transição da alimentação de ração úmida para seca

Souza

Júnior

Fonseca

et al. 2015

Pesq. agropec. bras.

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“…The used of salinized water in freshwater fish larviculture can have positive or negative implications, with tolerance being recognized as species-dependent, varying according the fish development stage, water quality, feeding management, fish farming systems and acclimatization time (Salaro et al, 2012;Jomori et al, 2013;Takata and Luz, 2015). The H. severus larvae presented a WU and SR reduction when the salinized water increased from 3 to 6 g L -1 .…”

Section: Discussionmentioning

confidence: 99%

“…Salinized water as a strategy for increase stocking density in Heros severus larviculture, an Amazonian ornamental fish 20 larvae L -1 in 3 g L -1 of salinized water presented the higher growth values. These results may be related to the reduction of the osmotic gradient, between farmed water and fish plasma, which leads to a reduction in energy requirement for osmoregulation (Salaro et al, 2012;Fabregat et al, 2015), redirecting that energy to other physiological processes, such as fish growth (Fisher et al, 2021;Freire and Sampaio, 2021). Furthermore, adequate levels of salinized water can reduce the toxic effect of ammonia and nitrite, contributing to improving the welfare of the fish and decrease the toxicity of the nitrogenous compounds (Sampaio et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

“…The used of salinized water benefits the Artemia nauplii, once it makes possible the microcrustacean to remain alive longer than in freshwater and thus, improving its availability and attractiveness to the larvae (Silva et al, 2019). In addition, the increase in water salt concentration decrease the ionic difference between water and fish plasma, which reduce the energy expenditure by freshwater fish to maintain its osmotic equilibrium (Salaro et al, 2012;Fabregat et al, 2015). The fish larval can redirected this energy to other physiological processes, such as fish growth, immunity and stress responses (Fisher et al, 2021;Freire and Sampaio, 2021).…”

Section: /8mentioning

confidence: 99%

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Salinized water as a strategy for increase stocking density in Heros severus larviculture, an Amazonian ornamental fish

Oliveira¹,

Silveira²,

Nascimento³

et al. 2023

Bol. Inst. Pesca

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The aim of this study was to evaluate the effect of different salinized water (0, 3 and 6 g L-1) and stocking densities (10, 15 and 20 larvae L-1) in Heros severus larviculture. The experimental design was completely randomized, in a 3x3 factorial design, with three replicates. For this, a total of 405 larvae of H. severus were randomly distributed in 27 aquariums (1L) according to the treatments and after 15 days all the larvae were measured, weighed and counted. Higher values for final length, length gain and specific growth rate were observed in H. severus larvae raised at any stocking density tested at 3 g L-1 of salinized water (p < 0.05). The final weight and weight gain followed the same trend of the length, being higher in fish submitted to 3 g L-1 of salinized water (p < 0.05). On the other hand, the salinized water of 6 g L-1 was detrimental to larvae weight uniformity and survival rate (p < 0.05). The fish stocked at densities of 15 or 20 larvae L-1 presented the best results of final weight and weight gain (p < 0.05). The stocking density of 20 larvae L-1 in salinized water at 3 g L-1 is recommended for H. severus larviculture.

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“…The use of sodium chloride (NaCl) in water has proved to be an important rearing protocol during the production of larvae (SANTOS and LUZ, 2009;LUZ and SANTOS, 2010;LUZ et al, 2012;JOM ORI et al, 2012;JOMORI et al, 2013) and juveniles (ZUANON et al, 2009;SALARO et al, 2012) of freshwater fish species. In literature, tolerance of Betta splendens to salinity was been reported by ZUANON et al (2009) and PUELLO-CRUZ et al (2010).…”

Section: Introductionmentioning

confidence: 99%

Larvicultura do betta em água levemente salinizada

et al. 2017

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The low-salinity water may improve live food utilization during larviculture, mainly when larvae are fed with salt water organisms. This study aimed to determine the median lethal concentration (LC 50 ) of NaCl in water for larvae of Betta splendens, an important ornamental species, and to evaluate the effect of low-salinity on the larviculture during the first 15 days of exogenous feeding. In the first experiment, 400 larvae were stocked in forty 250 mL aquariums, and exposed to ten saline concentrations. In the second experiment, 360 larvae were distributed in 24 1 L aquariums, in a factorial design 2x3 comprising two increasing prey densities, starting with 50 and 100 Artemia nauplii larva -1 , and three concentrations of NaCl (0, 2 and 4 g NaCl L -1 ). After 24, 48, 72 and 96 h of exposure, the LC 50 were 11.7, 10.1, 8.2 and 7.1 g NaCl L -1 , respectively. At the end of the experiment 2, larvae reared in salinity of 2 and 4 g NaCl L -1 and fed with the initial prey density of 100 nauplii larvae -1 were bigger and heavier. The use of low-saline water (2 to 4 g NaCl L -1 ) is a safe protocol for larviculture of Siamese fighting fish as it does not affect the survival and optimizes the use of Artemia nauplii when higher prey densities are used.

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Saline water for juvenile giant trahira during feed training

Cited by 9 publications

References 25 publications

Períodos de condicionamento alimentar de juvenis de pirarucu na transição da alimentação de ração úmida para seca

Períodos de condicionamento alimentar de juvenis de pirarucu na transição da alimentação de ração úmida para seca

Salinized water as a strategy for increase stocking density in Heros severus larviculture, an Amazonian ornamental fish

Larvicultura do betta em água levemente salinizada

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