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해상가두리 양식장에서 배합사료 및 생사료 공급에 따른 조피볼락 (Sebastes schlegeli)의 성장 및 육질 비교
이봉주 ( Bong Joo Lee ),김신권 ( Shin Kwon Kim ),김강웅 ( Kang Woong Kim ),김경덕 ( Kyoung Duck Kim ),한현섭 ( Hyon Sob Han ),손매현 ( Maeng Hyun Son ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.3
This study was conducted to compare extruded pellets (EP) and soft extruded pellets (SEP) with a raw fish-based moist pellet (MP) diet on the growth and flesh quality of Korean rockfish Sebastes schlegeli. Three groups of 20,000 fish (initial mean weight 133 g) per net-cage (6×12×7 m) were fed commercial EP, SEP or MP for 16 months. The survival of fish fed SEP was higher than those of fish fed EP or MP. The highest growth performances were observed in the mean weight gain, total weight gain, and feed efficiency of fish fed MP, followed by those fed EP and SEP. Among the fish fed on extruded pellets, the total weight gain of fish fed SEP was higher than that of those fed EP, while fish fed EP grew faster than those fed SEP. No notable differences in body composition, sensory scores or textural properties of the dorsal muscle were observed in fish fed on EP,SEP or MP. Thus, it is suggested that extruded pellets, rather than raw fish-based moist pellets, could be fed to Korean rockfish without compromise-ing flesh quality.