Nutritional requirements

Jauncey, K.

doi:10.1007/978-94-011-4008-9_9

Cited by 44 publications

(43 citation statements)

References 109 publications

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“…This reduction occurs due to the protein withdrawal from less vital tissues (muscle) to maintain the vital tissues functions (Halver & Hardy, 2002). The decrease in the performance of Nile tilapia after reaching the requirement value is related to the greater energy expenditure to metabolize the excess of absorbed amino acids (Jauncey, 2000). The value is slightly below the requirement (29.0% of DP) presented to tilapia (Oreochromis spp.)…”

Section: Resultsmentioning

confidence: 91%

<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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Section: Resultsmentioning

confidence: 91%

<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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“…Four iso-nitrogenous diets were formulated to satisfy the nutrient requirements of O. niloticus according to NRC 1993 [34] (Table 1), basic diet was supplemented with either 10 g/kg Spirulina platensis (SP; Organic Spirulina powder cultivated in China, Nukraft company, London, UK), 5 g/kg Garlic (GP; Garlic powder, Natural mountain life company, Aswan, Egypt), or a mixture of 10 g S. platensis and 5 g Garlic/ kg feed (SP + GP). Control diet received no supplementation.…”

Section: Experimental Dietsmentioning

confidence: 99%

Effects of Dietary Supplementation of Spirulina platensis and Garlic on the Growth Performance and Expression Levels of Immune-related Genes in Nile tilapia (Oreochromis niloticus)

Abu‐Elala¹,

Galal²,

Abd‐Elsalam³

et al. 2016

J Aquac Res Development

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Sixty days feeding trial was carried out to investigate the supplemental effects of dietary phytobiotic mixture composed of Spirulina platensis powder (SP) and Garlic powder (GP) on the growth performance, intestinal morphometry, and immune responses of Nile tilapia Oreochromis niloticus. A total of 240 cultured O. niloticus (41.4 ± 0.09 g) were randomly divided into four experimental groups (three replicate/group), fed on basal diets contain 0% (control), 1% (SP), 0.5% (GP), or a combination of both (SP + GP). Fish group fed on phytobiotic mixture showed significant improvements in its feed intake, live weight gain, specific growth rate, feed conversion ratio and protein efficiency ratio (p<0.05), associated with a healthy gut, compared to non-supplemented control. Dietary supplementation of phytobiotics appeared to stimulate the humoral and cellular innate immunity. Fish group that were fed on phytobiotic mixture revealed up-regulation in some immune related genes; TNF-α and liver hepcidin as well as it exhibited the least cumulative mortality % upon A. hydrophila infection. So we can conclude that dietary supplementation of garlic and Spirulina have been improved the growth performance, gut health, immune status and disease resistance in Nile tilapia.

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“…The crude protein of 35% of the experimental diets for T. zillii and O. niloticus fingerlings (Table 1) satisfied the nutrient requirements for tilapias (Jauncey, 2000). The study revealed that T. zillii fed light-coloured diets (yellow and sea-green coloured diets) had better growth and feed efficiency than the other diets (Diets 1, 2 and 3 )( Table 3 and Figure 1).…”

Section: Discussionmentioning

confidence: 76%

Effects of feed colour on growth and nutrient utilization of Tilapia zillii and Oreochromis niloticus Fingerlings

Jegede¹,

Olusola²

2010

ABJNA

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A 75-day feeding trial was conducted to determine the effects of colour additives, {Food Drug and Cosmetic (FC and D) colour red, blue, sea-green and yellow} added to a basal diet (350g crude protein and 18.5KJ gross energy.g -1 diet) on growth and nutrient utilization in Tilapia zillii andOreochromis niloticus fingerlings. The control (normal light brown commercial diet, Diet 1), redcoloured diet (Diet 2), blue-coloured diet (Diet 3), sea-green coloured diet(Diet 4) and yellowcoloured diet (Diet 5) were fed to triplicate groups of T. zillii (14.00+ 0.003g) and O. niloticus (10.220.01g) fingerlings to apparent satiation in two equal instalments (0900-0930 and 1700-1730 h) in concrete tanks (2m x 2m x 1.25m). At the end of the trial, the fish were batch-weighed. T. zillii fed yellow and sea green coloured diets had better growth performance and nutrient utilization than the other diets (P<0.05). Water quality during the feeding trial was within the acceptable range for tilapia culture. Fish survival was high (>98%) and was not affected by feed colour in both tilapias.

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Nutritional requirements

Cited by 44 publications

References 109 publications

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

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

Effects of Dietary Supplementation of Spirulina platensis and Garlic on the Growth Performance and Expression Levels of Immune-related Genes in Nile tilapia (Oreochromis niloticus)

Effects of feed colour on growth and nutrient utilization of Tilapia zillii and Oreochromis niloticus Fingerlings

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