Protein: energy ratio in practical diets for Nile tilapia Oreochromis niloticus

Li, Yan; Bordinhon, André Moreira; Davis, D. Allen; Zhang, Wenbing; Zhu, Xitong

doi:10.1007/s10499-012-9616-3

Cited by 38 publications

(35 citation statements)

References 18 publications

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“…It seems that low dietary protein levels were efficiently utilized by parrot fish for protein synthesis and led to high protein retention in the body, which is in accordance with observations by Berger and Halver (). Similar results have been reported in other fish species (Bai et al ; Kim et al , , ; Grisdale‐Helland et al ; Kim and Lee ; Hossain et al ; Zhang et al ; Li et al ). On the other hand, Kikuchi et al () and Lee et al () reported that PER values of olive flounder increased with increasing dietary protein levels.…”

Section: Discussionsupporting

confidence: 89%

Optimum Dietary Protein Level and Protein‐to‐energy Ratio for Growth of Juvenile Parrot Fish, Oplegnathus fasciatus

Kim

Han

et al. 2016

J World Aquaculture Soc

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An 8‐wk feeding trial was conducted to estimate the optimum dietary protein level and protein‐to‐energy (P/E) ratio in juvenile parrot fish, Oplegnathus fasciatus. Eight experimental diets were formulated with two energy levels and four protein levels for each energy level. Diets containing crude protein (CP) at 35, 40, 45, and 50% had either 12.5 or 14.6 kJ/g of energy. Fish averaging 7.1 ± 0.06 g (mean ± SD) were fed one of the experimental diets for 8 wk. At the end of the feeding trial, weight gain (WG) of fish fed 45 and 50% CP in the 12.5 kJ/g diet was significantly higher than fish fed the 35% CP diet (P < 0.05). WG of the fish fed 45 and 50% CP in the 14.6 kJ/g diet was significantly higher than fish fed the 35 and 40% CP diets (P < 0.05). Fish fed the 14.6 kJ/g diet had a higher WG compared with fish fed the 12.5 kJ/g diet at all CP levels. Feed efficiency (FE) and specific growth rate (SGR) showed a similar trend to the WG. WG, FE, and SGR improved with increasing dietary protein levels up to 45% and remained constant at 50% CP for both energy levels. However, protein efficiency ratio was negatively related to dietary protein levels. The results suggested that the optimum level of protein and the optimum P/E ratio for juvenile parrot fish should be 45% and 31.1 mg protein/kJ, respectively, in a diet containing 14.6 kJ/g energy.

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Section: Discussionsupporting

confidence: 89%

Optimum Dietary Protein Level and Protein‐to‐energy Ratio for Growth of Juvenile Parrot Fish, Oplegnathus fasciatus

Kim

Han

et al. 2016

J World Aquaculture Soc

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“…Similar results were found by Puppo et al (2017), who evaluated the reduction of crude protein by application of the ideal protein concept for Nile tilapia from 14 to 55 g. There was no difference found in weight gain for fish fed diets varying between 25.5 and 30.0% of DP. Li, Bordinhon, Davis, Zhang and Zhu (2013) did not verify significant differences in juvenile Nile tilapia fed diets containing 25 and 30% of CP. Costa, Melo and Correia (2009) recommends for a phase of 80 to 300g a diet of 32% of CP without causing harm to animals.…”

Section: Resultsmentioning

confidence: 72%

<b>Digestible protein requirement for Nile tilapia fed with rations based on soybean meal and corn

Carneiro¹,

Pandini²,

Silva³

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. The objective was to determine the requirement of digestible protein (DP) for Nile tilapia fed with diets based on soybean meal and corn. Two hundred Nile tilapia juveniles, sexually reversed, were used for a trial period of 100 days. The animals were distributed in 20 boxes of 1000 L -1 in a random design with five treatments and four replications, the boxes were connected to a water recirculation system. Five isoenergetic diets were tested with different levels of digestible protein (DP): 20, 25, 30, 35 and 40%. At the end of the experimental period were evaluated the zootechnical performance data. A quadratic effect (p < 0.05) was shown to parameters of final weight, weight gain, final length, fillet yield and visceral fat with the best points that ranged from 28.3 to 29.9% of DP. The largest area of hepatocytes was found to the lowest levels of DP in the diet (20 and 25%) compared to the other levels, which were similar. Thus, Nile tilapia has adequate performance for the consumption of diets based on soybean and corn meal and the recommended level is 28.3% of PD in these conditions. Keywords: plant origin feed, aquaculture, fish nutrition.Exigência de proteína digestível para tilápias do Nilo alimentadascom rações à base de farelo de soja e milho RESUMO. Objetivou-se determinar a exigência de proteína digestível (PD) para a tilápia do Nilo, alimentada com dietas à base de farelo de soja e milho. Duzentos juvenis de tilápia do Nilo (32,80 ± 0,39 g), sexualmente revertidos, foram utilizados por um período experimental de 100 dias. Os animais foram distribuídos em 20 caixas de 1000L -1 em delineamento aleatório com cinco tratamentos e quatro repetições. As caixas eram ligadas a um sistema de recirculação de água. Foram testadas cinco dietas isoenergéticas com diferentes níveis de PD: 20, 25, 30, 35 e 40%. Ao final do período experimental, foram avaliados os dados de desempenho zootécnico. Um efeito quadrático (p < 0,05) foi mostrado aos parâmetros de peso final, ganho em peso, comprimento final, rendimento de filé e de gordura visceral com os melhores pontos que variaram de 28,3 a 29,9% de PD. A maior área dos hepatócitos foi encontrada para os níveis mais baixos de PD na dieta (20 e 25%), em comparação com os outros níveis, que foram semelhantes. Assim, pode-se afirmar que a tilápia do Nilo tem desempenho adequado para o consumo de dietas baseadas em farelo de soja e milho e o nível recomendado é de 28,3% PD nestas condições.Palavras-chave: alimentos de origem vegetal, aquicultura, nutrição de peixes.

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“…Li et al . () suggested that dietary energy content of 11.7 MJ kg −1 DE was reasonable for 7.44 g Nile tilapia. Therefore, in our current study, we chose 10.9 and 12.4 MJ kg −1 DE levels to assess the effects of two different diet DE contents on methionine requirement and utilization for maximum growth of juvenile Nile tilapia ( Oreochromis niloticus ).…”

Section: Introductionmentioning

confidence: 98%

The effect of dietary methionine concentrations on growth performance of juvenile Nile tilapia (Oreochromis niloticus) fed diets with two different digestible energy levels

Liang

Lemme

et al. 2016

Aquacult Nutr

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A growth trial was conducted to examine the effect of dietary digestible energy (DE) content on methionine (Met) utilization and requirement in juvenile Nile tilapia (Oreochromis niloticus). Ten iso‐nitrogenous (288 g kg−1 protein) practical diets, with two DE levels (10.9 MJ kg−1; 12.4 MJ kg−1) and five methionine supplementation levels (0, 1, 2, 4 and 6 g kg−1), were hand‐fed twice daily to triplicate groups of Nile tilapia (initial body weight 8.95 ± 0.06 g) for 8 weeks. Weight gain (WG) and specific growth rate (SGR) increased significantly with increasing dietary methionine concentration at the same DE content (P < 0.001). At the same dietary methionine level, WG and SGR of fish fed high‐DE diets were significantly higher than that of fish fed low‐DE diets (P = 0.0001), although no interaction was found between dietary DE and methionine supplementation. Based on quadratic regression analysis between dietary methionine concentration and weight gain, optimal methionine requirement for maximum growth, expressed as g Met required kg−1 diet (low‐ versus high‐DE diets), increased as diet DE concentration increased (7.34 versus 9.90 g kg−1 diet, respectively; with cysteine 4.70 g kg−1 diet). The results indicated that diet DE content affects methionine utilization and requirement in juvenile Nile tilapia, fish fed high‐DE diets required more methionine for maximum growth.

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Protein: energy ratio in practical diets for Nile tilapia Oreochromis niloticus

Cited by 38 publications

References 18 publications

Optimum Dietary Protein Level and Protein‐to‐energy Ratio for Growth of Juvenile Parrot Fish, Oplegnathus fasciatus

Optimum Dietary Protein Level and Protein‐to‐energy Ratio for Growth of Juvenile Parrot Fish, Oplegnathus fasciatus

<b>Digestible protein requirement for Nile tilapia fed with rations based on soybean meal and corn

The effect of dietary methionine concentrations on growth performance of juvenile Nile tilapia (Oreochromis niloticus) fed diets with two different digestible energy levels

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