A tilapicultura e seus insumos, relações econômicas

Filho, J. D. Scorvo; Frascá-Scorvo, C. M. D.; Alves, João Manoel Cordeiro; Souza, Fernanda Rinaldi Alves de

doi:10.1590/s1516-35982010001300013

Cited by 32 publications

(19 citation statements)

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“…Approximately 40% of fish from aquaculture is originated from tilapia production, where the Brazilian production was 133,000 t in 2009 (Scorvo-Filho et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Digestible lysine requirement of Nile tilapia fingerlings fed arginine-tolysine-balanced diets

et al. 2012

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-This study was conducted to determine the digestible lysine requirements of Nile tilapia fingerlings. Fish (n = 300; average initial weight = 1.44 g) were distributed 15 300-L aquariums, in a completely randomized design with five treatments and three replicates, and fed extruded diets containing 11.3, 13.7, 16.1, 18.4 or 20.8 g/kg of digestible lysine. The arginine:lysine ratio was maintained at 1.3:1. All fish were fed diets containing 281 g/kg of digestible protein and 3,372 kcal digestible energy/kg, hand-fed until apparent satiation. There was no effect of the dietary lysine levels on survival rate, or protein and ash body rates. With increasing levels of lysine in the diet, a quadratic effect on weight gain, feed conversion, protein efficiency ratio, protein deposition rate, deposition rate of fat, body moisture and body lipids was observed, where the best values of the variables were estimated at 15.96, 16.4, 14.35, 15.21, 15.87, 15.21 and 16.29 g/kg of lysine, respectively.The digestible lysine requirement of Nile tilapia fingerlings is 15.21 g/kg (5.41 g/100 g of digestible protein), in diets balanced for the arginine:lysine ratio.

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“…Approximately 40% of fish from aquaculture is originated from tilapia production, where the Brazilian production was 133,000 t in 2009 (Scorvo-Filho et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Digestible lysine requirement of Nile tilapia fingerlings fed arginine-tolysine-balanced diets

et al. 2012

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“…The Brazilian aquaculture is the second (Chile is the first one) in South American production, supported basically by production chains of shrimp and tilapia culture. Brazil has genetically improved tilapia strains to better adaptation to local climatic conditions (Scorvo Filho et al 2010). Due to the large number of controversial results concerning fish lipolysis regulation, and the commercial importance of tilapia culture in Brazil, whose drought periods are prolonged, the objective of this work was to investigate the metabolic adaptation of red tilapia to long periods of fasting.…”

mentioning

confidence: 99%

Lipolytic response of adipose tissue and metabolic adaptations to long periods of fasting in red tilapia (Oreochromis sp., Teleostei: Cichlidae)

Júnior

Baviera

Zanon

et al. 2016

An. Acad. Bras. Ciênc.

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Adaptive changes of carbohydrate and lipid metabolism induced by 7, 15, 30, 60, 90, 150 and 200 days of fasting were investigated in red tilapia (Oreochromis sp.). Plasma glucose, lactate and free fatty acids (FFA) levels, liver and muscle glycogen and total lipid contents and rates of FFA release from mesenteric adipose tissue (MAT) were measured. Plasma glucose levels showed significant differences only after 90 days of fasting, when glycemia was 34% lower (50±5mg.dL -1 ) than fed fish values (74±1mg.dL -1 ), remaining relatively constant until 200 days of fasting. The content of liver glycogen (»15%) in fed tilapia fell 40% in 7 days of food deprivation. In 60, 90 and 150 days of fasting, plasma FFA levels increased 49%, 64% and 90%, respectively, compared to fed fish values. In agreement with the increase in plasma FFA, fasting induced a clear increase in lipolytic activity of MAT incubated in vitro. Addition of isobutylmethylxanthine (cAMP-phosphodiesterase inhibitor) and isoproterenol (non selective beta adrenergic agonist) to the incubation medium induced a reduction of lipolysis in fasted fish, differently to what was observed in mammal adipose tissue. This study allowed a physiological assessment of red tilapia response to starvation.

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“…O crescimento da aquicultura moderna é baseado no uso de alimentos completos ou suplementares na forma de rações formuladas, que podem representar de 50 a 60% do custo total de produção dos peixes (Scorvo et al, 1998(Scorvo et al, , 2010.…”

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Modelo de preço de ração para peixe no período de 2001 a 2015

Sonoda¹,

França²,

Cyrino

2016

Rev. iPecege

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Modelo de preço de ração para peixe no período de 2001 a 2015Model for aquafeeds price in the period [2001][2002][2003][2004][2005][2006][2007][2008][2009][2010][2011][2012][2013][2014][2015] ResumoA aquicultura moderna depende do uso de rações formuladas que podem representar de 50 a 60% do custo total de produção dos peixes. Porém não existem séries históricas públicas de preços de rações de peixe o que dificulta avaliações econômicas passadas de sistemas de produção e até a previsão de estratégias para o setor. Este estudo trata da elaboração de um modelo que calcula preços de rações em função da composição idealizada de duas rações comerciais (32 e 28% proteína bruta) e dos preços mensais deflacionados dos insumos, impostos e margens de uma indústria hipotética. Os preços gerados encontram-se dentro da dispersão de preços de ração encontrados na literatura indicando que o modelo é coerente. Porém, a variação entre preços levantados é muito grande, o que indica a necessidade de se manter um levantamento periódico constante das informações de preços de ração de peixe como uma referência para o mercado. Palavras-chave: Custo, Indústria, Milho, Piscicultura, Soja, Tilápia AbstractModern aquaculture relies on the use of processed aquafeeds, which may amount up to 50 to 60% of the total costs of fish production systems. However, because there are no open, accessible historical series of aquafeed prices, economic evaluations of production systems and forecasting strategies for the sector are virtually impossible tasks. This study aimed at developing a model that estimates prices of aquafeeds as a function of the idealized composition of two commercial diets (32 and 28% crude protein) and deflated, monthly prices of feed ingredients, taxes and economical margins of a hypothetical industry. Estimated prices ranged within the dispersion prices of aquafeeds found in the literature, an indication of the model's logical adequacy. However, the high variation between surveyed prices sprouts the need for a constant survey on the prices of aquafeeds as a reference market tool.

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A tilapicultura e seus insumos, relações econômicas

Cited by 32 publications

References 0 publications

Digestible lysine requirement of Nile tilapia fingerlings fed arginine-tolysine-balanced diets

Digestible lysine requirement of Nile tilapia fingerlings fed arginine-tolysine-balanced diets

Lipolytic response of adipose tissue and metabolic adaptations to long periods of fasting in red tilapia (Oreochromis sp., Teleostei: Cichlidae)

Modelo de preço de ração para peixe no período de 2001 a 2015

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