Taxa alimentar no desempenho de juvenis de robalo-peva em tanque-rede

Barbosa, Moysés Cavichioli; Neves, Fábio de Farias; Cerqueira, Vinícius Ronzani

doi:10.4025/actascianimsci.v33i4.11413

Cited by 7 publications

(8 citation statements)

References 14 publications

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“…O melhor resultado foi obtido nos peixes alimentados a 3% da biomassa ao dia a 28ºC, e o pior, nos peixes alimentados a 6% da biomassa ao dia a 25ºC, quando comparados aos demais tratamentos (Tabela 2). A diminuição da conversão alimentar aparente com o aumento da taxa de alimentação está de acordo com os resultados obtidos por Barbosa et al (2011b) ao estudar larvas de robalo-peva.…”

Section: Resultsunclassified

Crescimento e produtividade de juvenis de robalo-peva a diferentes temperaturas e taxas de alimentação

Oliveira

Almeida

Pandolfo

et al. 2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito da temperatura e da taxa de alimentação sobre o crescimento e a produtividade de juvenis de robalo-peva (Centropomus parallelus). Utilizou-se experimento fatorial com duas temperaturas (25 e 28 o C) e duas taxas de alimentação (3 e 6% da biomassa ao dia), com três repetições para cada combinação de temperatura e taxa. Os peixes (9,80±0,41 g; 9,86±0,14 cm) foram alimentados duas vezes ao dia durante 60 dias. A cada 15 dias, foram realizadas amostragens para corrigir a quantidade de ração oferecida. Não houve mortalidade durante o experimento. Maior crescimento em peso e comprimento foi obtido nos animais submetidos à temperatura de 28ºC. Ganho de peso, biomassa final, conversão alimentar aparente e taxa de crescimento específico foram influenciados pela taxa de alimentação e pela temperatura. A oferta de 3% da biomassa ao dia a 28ºC proporciona melhores índices de crescimento e produtividade para juvenis de robalo-peva.Termos para indexação: Centropomus parallelus, aquicultura, bem-estar animal, desempenho produtivo, qualidade da água. Growth and yield of juvenile fat snook at different temperatures and feeding ratesAbstract -The objective of this work was to evaluate the effects of temperature and feeding rates on growth and productivity of juvenile fat snook (Centropomus parallelus). A factorial experiment with two temperatures (25 and 28°C) and two feeding rates (3 and 6% of biomass per day) was used, with three replicates for each combination of temperature and rate. Fish (9.80±0.41 g; 9.86±0.14 cm) were fed twice a day during 60 days. Every 15 days, samples were taken to correct the amount of food offered. No mortality was observed during the experiment. A greater growth in weight and length was obtained in animals subjected to the temperature of 28°C. Weight gain, final biomass, apparent food conversion, and specific growth rate were influenced by feeding rate and temperature. The offer of 3% of biomass per day at 28°C provides better growth and productivity indices for juvenile fat snook.

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Section: Resultsunclassified

Crescimento e produtividade de juvenis de robalo-peva a diferentes temperaturas e taxas de alimentação

Oliveira

Almeida

Pandolfo

et al. 2013

Pesq. agropec. bras.

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“…Moreover, a 4% feeding rate was not suitable for fish to meet their basic energy needs, and to express their growth potential, and the 8% feeding rate was the most suitable for this species. Opposite to these results, Barbosa et al (2011) observed that feed conversion reduced when feeding rates were increased for fat snook. The authors concluded that the low-food conversion of fish fed 6% body weight per day was caused by feed leftovers, probably because feeding was above the intake capacity and satiety of juveniles of such species, as leftovers were not observed in the tanks that received 3% body weight per day.…”

Section: Resultsmentioning

confidence: 85%

Performance of common snook subjected to different feeding frequencies and rates using automatic feeders

Herrera

Santos

Sousa

et al. 2019

Pesq. agropec. bras.

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The objective of this work was to evaluate the growth performance of common snook (Centropomus undecimalis) subjected to different feeding rates and frequencies using automatic feeders. Two experiments of 60 days each were carried out. In the first one, 20 fishes per tank were distributed in three feeding rates of: 5, 10, and 15% body weight per day. In the second experiment, 20 fishes per tank were distributed in nine tanks, in three feeding frequency: once a day, three times a day, and six times a day. Water parameters were maintained at the recommended level for the species. Final weight, body weight gain, specific growth rate, and feed conversion rate did not differ significantly between the 10 and 15% feeding rates. However, both rates differed from the 5% one. The feeding frequency of six times a day resulted in better values for final weight, final biomass, body weight gain, and specific growth rate. Therefore, common snook fingerlings should be fed at the feeding rate of 10% body weight per day, six times a day, in order to achieve the best growth performance.

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“…When cultivating fat snook juveniles performance for 40 days in net-tanks, with different feeding rates (1; 1.5; 2 and 2.5% of live weight per day) at 25°C, Barbosa, Neves, and Cerqueira (2011) observed a 100% survival rate in all treatments. The authors recommended the adoption of a feeding rate of 1.7% of the fish's biomass per day, considering fish with approximately 30 g. This rate was similar to what was found in this study, in which a 2% rate was determined regarding live weight per day for juveniles with 21 g, regardless of the adopted temperature.…”

Section: Resultsmentioning

confidence: 90%

<b>Performance of fat snook juveniles reared at different temperatures

Correia

David

Pinho

et al. 2018

Acta Sci. Anim. Sci.

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We aimed at evaluating the effects of different water temperatures on the zootechnical performance of fat snook. The experiment lasted for 60 days, which was conducted in water recirculation systems, and was randomly designed with three treatments and three replicates each, corresponding to three water temperatures (25, 28 and 31°C). A total of 225 fat snook juveniles with a mean weight of 6.45 ± 0.58 g were used, which were fed daily until apparent satiety. Zootechnical parameters were assessed and feeding rates were registered for each tested temperature. Survival rates varied from 96 to 100% among treatments. Higher values of standard and total length, and weight gain were found in 28 and 31°C (p < 0.05). With regard to final weight, final biomass, feed conversion and specific growth rate, no significant differences were observed (p > 0.05). Feeding rates did not differ among evaluated temperatures. The results show that the used temperatures did not negatively affect zootechnical performance of fat snook juveniles.

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Taxa alimentar no desempenho de juvenis de robalo-peva em tanque-rede

Cited by 7 publications

References 14 publications

Crescimento e produtividade de juvenis de robalo-peva a diferentes temperaturas e taxas de alimentação

Crescimento e produtividade de juvenis de robalo-peva a diferentes temperaturas e taxas de alimentação

Performance of common snook subjected to different feeding frequencies and rates using automatic feeders

<b>Performance of fat snook juveniles reared at different temperatures

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