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Growth, Survival, and Body Composition of Juvenile Atlantic Sturgeon Fed Five Commercial Diets under Hatchery Conditions
Author(s) -
King Kim
Publication year - 2004
Publication title -
north american journal of aquaculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.432
H-Index - 41
eISSN - 1548-8454
pISSN - 1522-2055
DOI - 10.1577/a03-009
Subject(s) - juvenile , biology , hatchery , acipenser , sturgeon , fishery , zoology , body weight , fish hatchery , fish <actinopterygii> , composition (language) , aquaculture , fish farming , ecology , endocrinology , linguistics , philosophy
Growth and survival were evaluated for 1 year in juvenile Atlantic sturgeon Acipenser oxyrinchus (mean weight, 164.9 g) held at seasonal temperatures (6.4–16.9°C) and fed five commercially available feeds: Biokyowa (BK; control), Zeigler sturgeon (ZSD), Integral sturgeon (ISD), Atlantic salmon (ASD2–30), and Government Ration trout diet (GR7–30). During the 365‐d study, the overall growth performance of the juvenile Atlantic sturgeon fed ZSD, ASD2–30, and ISD was equal to that of the fish fed the BK diet and superior to that of the fish fed GR7–30 ( P < 0.05). The final mean weight was highest for the fish fed ZSD and lowest for the fish fed GR7–30. The fish fed the ZSD and BK diets were the only groups to continue gaining weight in winter (6.4–9.7°C). The differences in growth may be related to dietary levels or ingredient quality. Body moisture, body protein, and body fat were affected by diet type and seasonal temperature. Among the diets tested, ZSD and ASD2–30 produced the greatest growth at the lowest cost in juvenile Atlantic sturgeon held at ambient seasonal temperatures.