Effects of dietary phosphorus and calcium level on growth and skeletal development in rainbow trout (Oncorhynchus mykiss) fry

Fontagné, Stéphanie; Silva, Nadia; Bazin, Didier; Ramos, Angela; Aguirre, Peyo; Surget, Anne; Abrantes, António; Kaushik, Sadasivam J.; Power, Deborah

http://hdl.handle.net/10400.1/5428

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Authors

Kaushik, Sadasivam J.

Power, Deborah

Abstract(s)

The effects of dietary levels of phosphorus (P) and calcium(Ca) on skeletal development and mineral deposition in rainbow trout(Oncorhynchus mykiss) fry were studied. Six semi-purified diets were formulated with graded levels of P and Ca. The basal diet A contained only P supplied by casein at 0.5% of drymatter. Other diets B, C,D and Ewere supplementedwith 0.4, 0.8, 1.2 and 1.6% P supplied as a 1:1 mixture of NaH2PO4/KH2PO4 resulting in 0.8, 1.2, 1.6 and 2.2% total P, respectively. These five dietswere supplementedwith 1% Ca supplied as CaCO3whereas another diet F, supplementedwith 0.8% P,was Ca-free. Each dietwas distributed to 3 replicate tanks of 600 swimup fry (initialmean weight: 0.1 g) at a water temperature of 17 °C over a 12-week growth trial. Fish were handfed 6 times a day to visual satiety.

Keywords

Rainbow trout Fry Phosphorous Calcium Mineralization Skeletal development

URI

http://hdl.handle.net/10400.1/5428

Citation

Stéphanie Fontagné, Nadia Silva, Didier Bazin, Angela Ramos, Peyo Aguirre, Anne Surget, Antonio Abrantes, Sadasivam J. Kaushik, Deborah M. Power, "Effects of dietary phosphorus and calcium level on growth and skeletal development in rainbow trout (Oncorhynchus mykiss) fry", Aquaculture 297 (2009) 141–150.