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Essentiality of phosphorus, magnesium, iron, zinc, and manganese in milkfish diet

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Date
1999
Author
Miñoso, May Grace G.
Borlongan, Ilda G.
Satoh, Shuichi
Page views
1,959
ASFA keyword
brackishwater aquaculture ASFA
feed composition ASFA
feeding experiments ASFA
fish culture ASFA
iron ASFA
minerals ASFA
nutritional requirements ASFA
phosphorus ASFA
animal nutrition ASFA
AGROVOC keyword
milkfish AGROVOC
Chanos chanos AGROVOC
Mineral requirement
Fish feed
Fish nutrition
Taxonomic term
Chanos chanos GBIF
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Abstract
Six semi-purified casein based diets were formulated to contain either a complete mineral mixture (control) or mineral premixes from which a specific test mineral was deleted to obtain phosphorus(P)-free, magnesium(Mg)-free, iron(Fe)-free, zinc(Zn)-free, or manganese(Mn)-free diets. These diets were fed to juvenile milkfish (mean initial weight 2.60±0.08g) for a 22-week experimental period. Final mean percent weight gain ranged from 1022 to 1379% with P-free (1022%) and Fe-free (1066%) diets obtaining a significantly lower weight gain (p<0.01) than the control diet (1270%). Survival was greater than 90% and did not differ significantly among treatments.

Upon termination of the growth experiment, milkfish flesh, bones, and combined samples of head, skin, and scales were dissected and analyzed for ash, P, Ca, Mg, Fe, Zn, and Mn content. The deletion of P or Fe from mineral mixture lowered P content in flesh and bone. Zn content in bone of fish was also lowered by exclusion of Zn, Mn, Mg or Fe. The result of this study demonstrated that it is necessary to supplement P and Fe even to semi-purified casein based diets.
URI
http://hdl.handle.net/10862/1842
Suggested Citation
Miñoso, M. G. G., Borlongan, I. G., & Satoh, S. (1999). Essentiality of phosphorus, magnesium, iron, zinc, and manganese in milkfish diet. Fisheries Science, 65(5), 721-725. https://doi.org/10.2331/fishsci.65.721 
DOI
10.2331/fishsci.65.721
Type
Article
ISSN
0919-9268
Collections
  • Journal Articles [1180]

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