Effect of phosphorus intake on faecal and non-faecal phosphorus excretion in rainbow trout (Oncorhynchus mykiss) and the consequences for comparative phosphorus availability studies

Rodehutscord, M.; Gregus, Zoltán; Pfeffer, E.

doi:10.1016/s0044-8486(00)00341-0

Cited by 101 publications

(102 citation statements)

References 20 publications

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“…Coloso et al (2002) similarly reported that soluble P production per kg fish is a linear function of dietary P and is independent of the type of diet used (purified (egg white-based), semipurified or practical) and apparently on the size of fish. The increasing level of faecal P as a result of increase in dietary P as observed from the study is in agreement with previous works (Ketola and Richmond, 1994;Rodehutscord et al 2000;Sugiura et al 2000). Increasing faecal P and Ca levels due to increase in dietary P levels is in line with observation of Sugiura et al (2000) who described that faecal P content significantly increased when diet fed to rainbow trout was supplemented with calcium phosphate.…”

Section: Discussionsupporting

confidence: 93%

Effect of different levels of phosphorus on growth and mineralization in African giant catfish <i>Heterobranchus bidorsalis</i> (Geoffrey Saint Hillarie, 1809)

Nwanna¹,

Adebayo²,

Omitoyin³

2010

Journal of Applied Sciences and Environmental Management

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Eleven diets (D1-D11), designated as treatments (T1-T11), supplemented with different levels of inorganic phosphorus (P) (Ca 2 PO4) were fed to Heterobranchus bidorsalis (10.8 ±0.02 g) to determine the optimum P requirement. D1 -D11 contained total P of 10. 2, 10.4, 11.0, 11.9, 12.3, 12.6, 13.4, 13.9, 14.2 14.7 and 15.4 g kg -1 respectively. After 84 days of feeding trial, there was increase in fish growth up to T5 with 12.3g P kg -1 diet, followed by consistent decline in growth towards T11 with the highest P content. However, fish in T5 had the best (P<0.05) growth performance and feed conversion ratio (FCR). Fish in T1 and T2 had the highest (P<0.05) FCR. Carcass protein was the same in T5, T6, T7, T8, T9 and T10, which was higher (P<0.05) than in T1, T2, T3 and T4. Carcass fat content was highest in fish in T1 which also had the lowest water content. P and Ca concentration in fish carcass increased linearly and was highest (P<0.05) in fish in T11, while Mg and Zn were highest (P<0.05) in fish in T5. Data from the study suggest 12.3 g P kg -1 diet as optimum requirement for the growth of Heterobranchus bidorsalis.

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Section: Discussionsupporting

confidence: 93%

Effect of different levels of phosphorus on growth and mineralization in African giant catfish <i>Heterobranchus bidorsalis</i> (Geoffrey Saint Hillarie, 1809)

Nwanna¹,

Adebayo²,

Omitoyin³

2010

Journal of Applied Sciences and Environmental Management

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“…Excessive P levels in feed, results in excretion of excess or unavailable P as inorganic phosphate mainly in the urine or in the feces (Bureau and Cho 1999;Rodehutscord et al 2000;Sugiura et al 2000;Hua et al 2008;Bureau and Hua 2010). Intensive aquacula Corresponding author: Grant.Vandenberg@fsaa.ulavla.ca ture can generate environmental P loadings that may contribute to eutrophication of sensitive receiving water bodies.…”

Section: Introductionmentioning

confidence: 99%

Effects of alternating feeding regimes with varying dietary phosphorus levels on growth, mineralization, phosphorus retention and loading of large rainbow trout (Oncorhynchus mykiss)

Koko

Sarker

Proulx

et al. 2010

Aquat. Living Resour.

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-Excessive phosphorus (P) levels in freshwater aquaculture effluents are a major environmental problem in certain receiving water bodies. This study aimed to test an approach alternating that alternating feeding P deficient and P sufficient diets and measure P loading from rainbow trout (Oncorhynchus mykiss) culture. Three experimental practical diets consisting of P-deficient (0.4% P, P04), optimum level of P (0.6% P, P06) and P-sufficient as control diet (0.8% P, P08) were formulated. Six different feeding regimes of P-sufficient diet continuously (P08), P-deficient diet continuously (P04), optimum dietary level of P (P06) continuously, one week P-deficient/one week optimum level of P diet (P04/P06.1), 2 weeks P-deficient/2 weeks optimum level of P diet (P04/P06.2) and 4 weeks P-deficient/ 4 weeks optimum level of P diet (P04/P06.4) were tested. Fish were fed twice daily to apparent satiation level 16 weeks. Fish fed all alternating regimes showed growth rate (weight and length) comparable to those of continuous feeding with P08 and P06 diet. The feed conversion ratios (FCR) for all alternating regimes were comparable to that of the P08 and P06 continuous feeding regime. Neither the thermal unit growth coefficient (TGC) nor condition factor (K) significantly influenced by feeding regimes. Vertebrae P, ash and whole body ash content did not differ among regimes. Except fish fed continuous P04 diet, the ash and P content in opercula and whole body total P content were not significantly different among each other in a continuous feeding and alternating feeding schedule. Fish fed all alternating regimes showed significantly lower P consumption than those fed continuously fed with P08 and P06. Different feeding regimes had no effect P retention. Significantly higher P loading (solid and dissolved) was noted in fish fed continuously with P08 diet, in contrast P loading values were lower for all alternating feeding regimes. The study demonstrated that growth and tissue mineralization of fish maintained on alternating feeding regimes with P04 and P06 diet were comparable to those continuously fed with diet of P08. These results demonstrate that it is possible to reduce P intake by 34% and reduce P loading 52% by adopting alternating feeding regimes compared to P08 diet. This study provides evidence that alternating feeding of P deficient and optimum dietary levels using practical ingredients can be adopted as a means of reducing P loading from rainbow trout culture without compromising growth.

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“…According to Rodehutscord et al (2000), the digestibility of P is dependent on the concentration of the Mineral matter and the P concentration in the ingredient, being higher in ingredient with smaller Mineral matter and P content, due to the fact each species has a great amount of use of this mineral, the excess being eliminated. Differences in the use of minerals can be related to the amount of collagen present in each FMBM.…”

Section: Apparent Digestibility Coefficientmentioning

confidence: 99%

Digestibilidade aparente de farinha de carne e ossos de peixe para tilápia do Nilo

et al. 2016

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sUMMAryThis paper was aimed to determine the apparent digestibility of crude protein, crude fat, gross energy, calcium and phosphorus of tilapia meat and bone meal (Oreochromis niloticus) (TMBM), the catfish meat and bone meal (Ictalurus punctatus) (CMBM), pintado cathfish meat and bone meal (Pseudoplatystoma corruscans) (PCMBM) and the African catfish meat and bone meal (Clarias gariepinus) (ACMBM) for Nile tilapia. For that, the indirect method was used, using chromium (III) oxide (Cr 2 O 3 ), as an inert indicator incorporated in the ration of 1 g·kg -1 . Nile tilapia (400 fish) were distributed with 50±7.89 g (mean ± SD) in 20 conical tanks in a completely randomized experimental design, consisting of five treatments with four replications. The treatments consisted of a reference diet and four diets consisting of 800 g·kg-1 of reference diet and 200 g·kg-1 of the test ingredients. The PCMBM showed a better digestibility coefficients for crude protein, calcium and phosphorus, while TMBM obtained a higher value for digestible energy and crude fat. The highest mineral matter result was obtained from CMBM. The results of this study suggest that Nile tilapia has limited ability to digest and use the components in the evaluated ingredients. The presence of large amounts of structural collagen in these ingredients and their low digestibility may have caused reduction in the availability of calcium and phosphorus.Digestibilidade aparente de farinha de carne e ossos de peixe para tilápia do Nilo quimicocesar@hotmail.com resUMo Este trabalho foi realizado com o objetivo de determinar a digestibilidade aparente da proteína bruta, extrato etéreo, energia bruta, cálcio e fósforo das farinhas de carne e ossos de tilápia do Nilo (Oreochromis niloticus), do catfish (Ictalurus punctatus), do pintado (Pseudoplatystoma corruscans) e do bagre africano (Clarias gariepinus) para a tilápia do Nilo. Para tal, foi utilizado o método indireto, com o uso do óxido de cromo (III) (Cr 2 O 3 ), como indicador inerte, incorporado na ração em 1 g·kg-1. Foram distribuídas 400 tilápias com 50±7,89 g (média ± DP) em 20 tanques cônicos em um delineamento experimental inteiramente ao acaso, constituído por cinco tratamentos com quatro repetições. Os tratamentos foram compostos de uma dieta referência e outras quatro dietas constituídas de 800 g·kg-1 da dieta referência e 200 g·kg-1 da farinha de carne e ossos de tilápias, catfish, pintado e bagre africano. A farinha de carne e ossos de pintado demonstrou melhor digestão para proteína bruta, cálcio e fósforo, enquanto a farinha de carne e ossos de tilápia obteve valor maior para extrato etéreo e energia digestível. Para matéria mineral, o maior resultado obtido foi para a farinha de carne e ossos de catfish. Os resultados deste estudo sugerem que a tilápia do Nilo apresenta limitada capacidade para digerir e utilizar os componentes presentes nas farinhas de ossos avaliadas. A presença de grande quantidade de colágeno estrutural nesses ingredientes e sua baixa digestibilidade pode ter causado redu...

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Effect of phosphorus intake on faecal and non-faecal phosphorus excretion in rainbow trout (Oncorhynchus mykiss) and the consequences for comparative phosphorus availability studies

Cited by 101 publications

References 20 publications

Effect of different levels of phosphorus on growth and mineralization in African giant catfish <i>Heterobranchus bidorsalis</i> (Geoffrey Saint Hillarie, 1809)

Effect of different levels of phosphorus on growth and mineralization in African giant catfish <i>Heterobranchus bidorsalis</i> (Geoffrey Saint Hillarie, 1809)

Effects of alternating feeding regimes with varying dietary phosphorus levels on growth, mineralization, phosphorus retention and loading of large rainbow trout (Oncorhynchus mykiss)

Digestibilidade aparente de farinha de carne e ossos de peixe para tilápia do Nilo

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