Influence of dietary soy and phytase levels on performance and body composition of large rainbow trout (Oncorhynchus mykiss) and algal availability of phosphorus load

Vielma, Jouni; Mäkinen, Tero; Ekholm, Petri; Koskela, Juha

doi:10.1016/s0044-8486(99)00299-9

Cited by 154 publications

(132 citation statements)

References 39 publications

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“…Os resultados obtidos por esses autores comprovaram que a fitase aumentou o consumo de ração e melhorou o ganho de peso dos peixes e a biodisponibilidade do fósforo (71,5 e 79,8%, respectivamente). Vielma et al (2000) desenvolveram estudo para avaliar a influência da substituição parcial da farinha de peixe por derivado da soja em rações para truta arco-íris adulta com dois níveis de fitase (0 e 1.200 uf/kg) e verificaram que uma parte significativa da farinha de peixe pode ser substituída por proteínas da soja sem comprometer o ganho de peso ou a eficiência alimentar. Furuya et al (2001) avaliaram os efeitos da adição de diferentes níveis de fitase (0, 500, 1.500 e 3.000 uf/kg) em dietas contendo 4% de farinha de peixe, 1,8% de calcário calcítico e ingredientes de origem vegetal para tilápias-do-nilo durante 45 dias e concluíram que a utilização de ração com 700 uf/kg foi adequada para o desempenho produtivo na fase inicial.…”

Section: Resultsunclassified

“…Assim, as fezes excretadas contêm altos teores de fósforo fítico (Pizzolante, 2000). Vários autores encontraram efeitos positivos da inclusão de fitase em rações para peixes (Vielma et al, 1998;Vielma et al, 2000;Jackson et al, 1996;Schäfer et al, 1995;Olivia-Teles et al, 1998) Este experimento foi realizado com o objetivo de comparar o desempenho, a incorporação e a excreção de fósforo obtidos com o fornecimento de uma ração com suplementação de fósforo aos resultados obtidos com rações sem adição de fósforo, porém, com níveis crescentes de fitase para tilápias-do-nilo durante a fase de crescimento.…”

Section: Introductionunclassified

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Phytase in diets for Nile tilapia in the growth period

Bock

Pezzato²,

Cantelmo

et al. 2007

R. Bras. Zootec.

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This research was carried out to compare the effect of phytase on performance, in the incorporation and excretion phosphorus in Nile tilápia. Four diets were used: one standard (contol), composed by 3,200 DE kcal ED/kg of ration and 30.0% CP and supplemented with phosphorus (4.0% of dicalcium phosphate), considering the treatment control, and others three, without phosphorus supplementation, with different phytase levels (1,000, 1,500, and 2,000 uf/kg), with four replication, per a period of 82 days. Circular tanks of fiber glass, with constant flow and aeration were used. The results demonstrated that the use of phytase in diets for fish production can reduce the levels of inorganic phosphorus in the diets and minimizing the impacts caused by phosphorus in the production system and in the natural environment and also can improve the productivity, increasing the amount of feed to be supplied and, consequently, facilitating the increase of biomass of fish to be used per production area.

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Section: Resultsunclassified

Section: Introductionunclassified

Phytase in diets for Nile tilapia in the growth period

Bock

Pezzato²,

Cantelmo

et al. 2007

R. Bras. Zootec.

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“…When processed for human consumption, whole rainbow trout are usually cleaned at fish farms. The cleaning process produces liquid waste, which is directed to a communal sewer system, and solid waste, of which 80% is used at fur farms as feed (Silvenius 2000;Vielma et al 2000). The remaining solid waste from fish processing is managed at municipal waste treatment plants.…”

Section: Data Sources and Quantification Methodsmentioning

confidence: 99%

“…The scenario is based on the use Fig. 1 System model of the rainbow trout production and consumption system in Finland with flows and stocks of N and P depicted Karttunen and Vielma (1993) b Vielma et al (2000) c Fineli (2008) of fish meal made of Baltic herring, which contains 11% N and 2% P (Ruohonen et al 1998 …”

Section: Data Sources and Quantification Methodsmentioning

confidence: 99%

Closing a Loop: Substance Flow Analysis of Nitrogen and Phosphorus in the Rainbow Trout Production and Domestic Consumption System in Finland

Asmala

Saikku

2010

AMBIO

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Ongoing eutrophication is changing the Baltic Sea ecosystem. Aquaculture causes relatively small-scale nutrient emissions, but local environmental impact may be considerable. We used substance flow analysis (SFA) to identify and quantify the most significant flows and stocks of nitrogen (N) and phosphorus (P) related to rainbow trout aquaculture in Finland. In 2004, the input of nutrients to the system in the form of fish feed was 829 t N year -1 and 115 t P year -1 . Around one-fifth of these nutrients ended up as food for human consumption. Of the primary input, 70% ended up in the Baltic Sea, directly from aquaculture and indirectly through waste management. The nutrient cycle could be closed partially by using local fish instead of imported fish in rainbow trout feed, thus reducing the net load of N and P to a fraction.

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“…Typically, animal protein source such as fishmeal or poultry by-products and plant protein source such as soy products contain significant amount of phytate phosphorous which is unavailable to most fish (Davis, 1999). Therefore, phytase supplementation of the diet can lead to easier release of phosphorous from phytate, making it more available to fish and reducing the undigested phosphorous discharge (Cain & Garling, 1995;Cheng & Hardy, 2002;Papatryphon et al, 1999;Rodehutscord & Pfeffer, 1995;Storebakken et al, 1998;Sugiura et al, 2001;Vielma et al, 1998Vielma et al, , 2000. In addition, better disease resistance of the fish fed was reported with DDGS for some species like catfish (allaboutfeed.net, 2008;Lim et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Twin-Screw Extrusion Processing of Rainbow trout (Oncorhynchus mykiss) Feeds Using Graded Levels of High Protein Corn-Based Distillers Dried Grains (HP-DDG) and Conventional Distillers Dried Grains with Solubles (DDGS)

Fallahi¹,

Rosentrater²,

Muthukumarappan³

et al. 2013

JFR

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Twin-screw extrusion cooking trials were performed to investigate the differential effects of conventional DDGS (DDGS) and HP-DDG inclusion, as fishmeal replacers, on physical properties (moisture content, water activity, thermal properties, expansion ratio, unit density, bulk density, water absorption, solubility and pellet durability indices, and color) of Rainbow trout (Oncorhynchus mykiss) feed. Four ingredient blends were formulated with 20 and 40% C-DDGS, and 20 and 40% HP-DDG, along with other required dietary ingredients. Each diet was extruded using two replications; a fishmeal based diet acted as the control diet. The highest and the lowest extrudate moisture content and water activity were observed for the diets containing 20% DDGS and 40% HP-DDG, respectively. Compared to the control diet, increasing HP-DDG content from 20 to 40% had no effect on the bulk density of the products, while increasing DDGS content from 20-40% led to a considerable rise in bulk density of the extrudates by 14.2 and 6%, respectively. Also, extrudates with the lowest brightness, greenness, and yellowness values were obtained from the diet containing 20% DDGS, whereas the most color intensity values were observed for the diets containing 40% DDGS and 20% HP-DDG. Increasing DDGS and HP-DDG from 0-40% caused a remarkable increase in water absorption index, by 72 and 30%, respectively. Likewise, the water solubility index increased, but in a considerably lesser order of magnitude. High pellet durability index of more than 99% was achieved with inclusion of either DDGS or HP-DDG. None of the diets impacted the thermal properties of the extrudates. Inclusion of 20 and 40% DDGS resulted in the extrudates with the largest and the smallest unit density values of nearly 887 and 750 kg/m 3 , respectively. As was expected, expansion ratio decreased with increasing unit density. Increasing inclusion levels of HP-DDG did not show any effect on unit density or expansion ratio of the products. Future research should concentrate on investigating the effects of both extrusion processing and graded levels of different types of DDGS on Rainbow trout feeds.

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Influence of dietary soy and phytase levels on performance and body composition of large rainbow trout (Oncorhynchus mykiss) and algal availability of phosphorus load

Cited by 154 publications

References 39 publications

Phytase in diets for Nile tilapia in the growth period

Phytase in diets for Nile tilapia in the growth period

Closing a Loop: Substance Flow Analysis of Nitrogen and Phosphorus in the Rainbow Trout Production and Domestic Consumption System in Finland

Twin-Screw Extrusion Processing of Rainbow trout (Oncorhynchus mykiss) Feeds Using Graded Levels of High Protein Corn-Based Distillers Dried Grains (HP-DDG) and Conventional Distillers Dried Grains with Solubles (DDGS)

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