Available phosphorus requirements of food-size channel catfish (Ictalurus punctatus) fed practical diets in ponds

Eya, Jonathan C.; Lovell, Richard T.

doi:10.1016/s0044-8486(97)00055-0

Cited by 89 publications

(79 citation statements)

References 21 publications

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“…Zhang et al (2006) observed similar effects for juvenile Japanese sea bass (Lateolabrax japonicusem), whose requirement was 6.8 g/kg for weight gain and 8.6-9.0 g/kg for bone mineralization. According to Eya and Lovell (1997), important factors such as economic, physiological and environmental factors should be considered when determining the phosphorus requirements in the diet.…”

Section: Resultsmentioning

confidence: 99%

Dietary phosphorus requirement of pejerrey fingerlings (Odontesthes bonariensis)

et al. 2014

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-To determine the available phosphorus requirement of pejerrey fish, four semi-purified diets were formulated to contain increasing available phosphorus levels (0.90, 2.7, 5.7 and 8.3 g/kg). Each diet was assigned to groups of 10 fish with average weight of 1.26±0.17 g, distributed into a completely randomized design with four treatments and four replications. Fish were fed at a rate of 10% total biomass four times a day for 60 days. The parameters productive performance, body chemical composition and mineral composition of bones and scales were evaluated. The best productive performance of fingerlings was obtained with the diet containing 4.3 g/kg available phosphorus. The average level of 6.3 g/kg available phosphorus promotes better mineralization of bones and scales in pejerrey fish.

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Section: Resultsmentioning

confidence: 99%

Dietary phosphorus requirement of pejerrey fingerlings (Odontesthes bonariensis)

et al. 2014

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“…Os resultados da análise de regressão demonstraram que houve um decréscimo linear no extrato etéreo depositado na carcaça à medida que aumentaram os níveis de fitase na dieta (Y= 14,1544 -0,8353X; r 2 = 0,76). Este resultado se assemelha ao obtido por EYA & LOVELL (1997), que, avaliando diferentes níveis de P disponível para o catfish de canal (Ictalurus punctatus), constataram que à medida que aumentavam os níveis de fósforo disponível na dieta, diminuía a deposição da gordura visceral e da gordura muscular. Isso evidenciaria que teria provavelmente ocorrido aumento na disponibilidade no P dietético.…”

Section: Methodsunclassified

Suplementação de fitase microbiana na dieta de alevinos de jundiá: efeito sobre o desempenho produtivo e as características de carcaça

et al. 2007

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“…Up to 80% of the total phosphorus content in plant protein sources is practically not available for fish as they do not have an endogenous phytase enzyme in their digestive tract [2,5,8,9,17]. The same result was observed for catfish [6,13]; tilapia [18]; common carp [19] and rohu [3].…”

Section: Discussionmentioning

confidence: 76%

“…Phytase supplementation in aqua feed also improves the availability of other trace elements [1,4,6,9,14,20] Several studies have demonstrated that use of phytase in aqua feed can release bound phosphorus to meet requirements of several fish species such as tilapia [16,18], channel catfish [12,15], carp [18,21,22], Pangasius pangasius [6] and Pangasius bocourti [13].…”

Section: Introductionmentioning

confidence: 99%

The Use of Phytase and Acidifier Supplementation on Growth and Feed Utilization of Tra Catfish (Pangasianodon Hypophthalmus)

Thanh¹,

Binh²,

Poonperm³

et al. 2017

ujar

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In the study five iso-nitrogenous and iso-energetic diets were formulated. T1 was a control with DCP (di-calcium phosphate) supplementation, T2 without DCP, T3 was a T2 supplemented with Acidifier (0.3% formic acid), T4 was a T2 supplemented with phytase (750 FTU/kg) and T5 was a T2 supplemented with Acidifier and phytase. Tra catfish fingerlings (15g) were cultured in 500 liter composite tanks in 10 weeks. The study indicates dietary supplementation of phytase (T4 and T5) significantly improved growth performances, ameliorated feed utilization and increased ash content of the whole body and bone phosphorus of juvenile Tra catfish. The study also indicates supplementing acidifier also improved growth performance, ameliorated feed utilization and increased ash content of the whole body and bone phosphorus. The decreased pH value of gastric juice due to the acidifier supplementation can accounts for the present result. However, mixture of phytase and an acidifier in T5 treatment does not have any ameliorated effect when compared to the separated phytase or separated acidifier. It seems the synergic effect of a mixture does not exist in the study. Some studies are needed to find out the suitable mixture of the two feed additives in Tra catfish feed.

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Available phosphorus requirements of food-size channel catfish (Ictalurus punctatus) fed practical diets in ponds

Cited by 89 publications

References 21 publications

Dietary phosphorus requirement of pejerrey fingerlings (Odontesthes bonariensis)

Dietary phosphorus requirement of pejerrey fingerlings (Odontesthes bonariensis)

Suplementação de fitase microbiana na dieta de alevinos de jundiá: efeito sobre o desempenho produtivo e as características de carcaça

The Use of Phytase and Acidifier Supplementation on Growth and Feed Utilization of Tra Catfish (Pangasianodon Hypophthalmus)

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