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http://dx.doi.org/10.5657/KFAS.2013.0777

Effects of Different Pellets on the Growth, Flesh Quality and Histopathological Changes of growing Korean Rockfish Sebastes schlegeli  

Kim, Kyoung-Duck (Aquafeed Research Center, National Fisheries Research & Development Institute)
Kim, Kang-Woong (Aquafeed Research Center, National Fisheries Research & Development Institute)
Lee, Bong-Joo (Aquafeed Research Center, National Fisheries Research & Development Institute)
Bae, Ki-Min (Aquafeed Research Center, National Fisheries Research & Development Institute)
Seo, Jung Soo (Pathology Division, National Fisheries Research & Development Institute)
An, Cheul Min (Aquafeed Research Center, National Fisheries Research & Development Institute)
Han, Hyun-Sob (Aquafeed Research Center, National Fisheries Research & Development Institute)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.46, no.6, 2013 , pp. 777-784 More about this Journal
Abstract
This study compared the effects of diets consisting of experimental extruded pellets (EP), commercial soft extruded pellets (SEP), and raw-fish-based moist pellets (MP) on the growth, flesh quality, and histology of the Korean rockfish Sebastes schlegeli. Three replicated groups of 60 fish each (initial mean weight 152 g) were fed one of two experimental EPs (EP1 and EP2), two commercial SEPs (SEP1 and SEP2), or MP for 11 weeks. The survival, weight gain, and final mean weight of the fish did not differ significantly among the groups. The highest feed efficiency was in fish fed MP (P<0.05), and the protein efficiency ratio of fish fed MP was significantly higher than that of fish fed EP1, EP2, or SEP1, but not significantly different from that of fish fed EP2. The daily feed intake of the fish fed the EPs and SEPs was significantly higher than that of the fish fed MP (P<0.05). The condition factor, Hepatosomatic Index, and Viscerasomatic Index of the fish did not differ significantly among the groups. No notable differences in the textural properties of the dorsal muscle, plasma biochemical parameters, or histological features of the fish were observed in fish fed any diet. This suggests that extruded pellets can be used to feed growing Korean rockfish without compromising growth, flesh quality, or histopathological change in comparison to raw fish-based moist pellets.
Keywords
Extruded pellet; Korean rockfish; Growth; Flesh quality; Histopathological Change;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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