Weber GM
Tanzania
Research Article
Growth Performance, Fillet Quality, and Reproductive Maturity of Rainbow Trout (Oncorhynchus mykiss) Cultured to 5 Kilograms within Freshwater Recirculating Systems
Author(s): Davidson JW,Kenney PB,Manor M,Good CM,Weber GM,Aussanasuwannakul A,Turk PJ,Welsh C,Summerfelt ST*Davidson JW,Kenney PB,Manor M,Good CM,Weber GM,Aussanasuwannakul A,Turk PJ,Welsh C,Summerfelt ST*
Rainbow trout are commonly cultured within aquaculture systems to one pound or less and marketed as pan- sized fillets. Production of larger rainbow trout provides a distinguishable product. Research that describes the growth performance and fillet quality of large rainbow trout is limited, particularly for trout cultured in recirculating aquaculture systems. A study was conducted evaluating the growth performance and fillet quality attributes of all- female rainbow trout reared using freshwater recirculating systems operated at a mean water temperature of 13°C, under constant lighting, and with around-the-clock feeding. Rainbow trout grew to 4.8 kg in 22 months post-hatch. Growth rates declined with the onset of reproductive maturity. Rainbow trout weighed 5.2 kg at 26 months. The mean ratio of feed provided to biomass gain was 1.36:1 from first feeding to 22 months but increased.. View More»
DOI:
10.4172/2155-9546.1000238