Document Type
Thesis
Abstract
Two experiments were repeated three times to evaluate the effects of feeding frequency, loading density, and food particle size on food conversion of age-0 Arctic grayling Thymallus arcticus reared in floating net-pens. Growth in length or weight could not be evaluated because of the short (11 - 12 days) feeding trials. When fed to satiation, the optimal interval between feedings was 3 hours. The highest initial loading density used (5.6 kg/m3) consistently produced the best food conversions (1.10 - 1.51 g food/g weight gain). Food particles several sizes larger than those generally recommended were used with less waste and without adverse effects. Optimal food size for 60 - 73 mm Arctic grayling was 1.3 - 1.5 mm (2.1 - 2.5% fork length).
Publication Date
5-17-1992
Recommended Citation
McKinley, Timothy R., "Evaluation of some factors affecting food conversion by age-0 arctic grayling reared in floating net-pens" (1992). Fisheries . 388.
https://ualaska.researchcommons.org/uaf_fisheries_facpubs/388
Handle
http://hdl.handle.net/11122/14798