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Effects of feeding rates on the growth, survival and feed utilization of hatchery‐reared juvenile spotted babylon Babylonia areolata Link 1807 in a flowthrough seawater system
Author(s) -
Chaitanawisuti N,
Kritsanapuntu A,
Natsukari Y,
Kathinmai S
Publication year - 2001
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1046/j.1365-2109.2001.00603.x
Subject(s) - biology , hatchery , juvenile , zoology , body weight , seawater , weight gain , feed conversion ratio , fishery , ecology , fish <actinopterygii> , endocrinology
The effects of feeding levels on the growth, survival and feed utilization of hatchery‐reared juvenile Babylonia areolata Link 1807 were assessed at four daily rations of 3%, 5%, 10% and 15% of body weight. Three duplicated groups of juveniles (mean initial body weight 0.26 ± 0.3 g) were stocked into indoor rearing tanks supplied with a flowthrough system of ambient natural seawater for 150 days. Growth in body weight differed significantly ( P < 0.05) among the various feeding levels. Final body weight of individual snails increased with increased feeding ration at a particular ration level. Meanwhile, increasing the daily ration to 10% and 15% significantly improved growth and feed utilization efficiency. The food conversion ratios (FCRs) for the 3% and 5% feeding levels were significantly lower than those for the other feeding levels. Final survival was best at feeding levels of 10% and 15% of body weight, ranging between 96.9% and 97.3%, but was very poor at the 3% and 5% feeding levels, ranging from only 49.5% to 54.8%.