Phosphorus availability of inorganic phosphates and fish meals in European sea bass (Dicentrarchus labrax L.) juveniles

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Pimentel Rodrigues, A (Author) Other; Oliva Teles, A (Author) FCUP

Journal

Title: Aquaculture

Vol. 267

Pages: 300-307

ISSN: 0044-8486

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 23 Citations

Scopus - 29 Citations

Scientific classification

FOS: Agrarian Sciences > Agriculture, Forestry, and Fisheries

Other information

Authenticus ID: P-004-8WJ

DOI: 10.1016/j.aquaculture.2007.01.018

Abstract (EN): A trial was conducted to evaluate the apparent availability of phosphorus (P) of five fish meals and three inorganic phosphorus sources (mono-, di- and tricalcium phosphate) to European sea bass juveniles. A cont gluten based diet containing 0.2% P was used as the basal diet. Test diets were formulated with different proportions of basal diet and test ingredients in order to have final phosphorus levels of 0.5%. This level was used as it is marginally lower than the estimated P requirement of sea bass, aiming that P availability is not affected by excessive dietary P concentration. Moreover, three other test diets were formulated to include only 0.3% of inorganic P sources, to evaluate the effect of dietary P levels on availability. ADC of P of fish meals ranged from 49 to 63% and was generally related to the fish meat ash content. Within the inorganic phosphorus sources, ADC of P was not affected by dietary phosphorus level but was significantly affected by supplement source. Mean P availability decreased in the following order: dicalcium phosphate (68%)>monocalcium phosphate (56%)>tricalcium phosphate (50%).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8