Effects of dietary phosphorus and zinc levels on growth artd bone mineralization in fingerlings of rainbow trout, Oncorhynchus mykiss
2008
Sarker, M.S.A. | Satoh, S.
A laboratory based 2 x 2 factorial experiment was conducted to investigate theinfluences of dietary phosphorus and zinc levels on growth and bone mineralization infingerlings of rainbow trout for 21 weeks. Two levels of phosphorus (19 and 30 mg/g)and two levels of zinc (55 and 103 Ag/g) in the dry diets were tested. Duplicate tanks of30 rainbow trout (average weight 1.56 ± 0.24 g) per 60L glass tank were fedexperimental diets three times a day to apparent satiation level at 15 to 24°C watertemperature. The results of the present study demonstrated that dietary phosphorussupplementation influenced the growth and bone mineralization whereas zinc levelssignificantly (p<0.05) influenced bone mineralization in rainbow trout. Furtherinvestigations in this area with different size and age groups of this fish are broadlyneeded.
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