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Influence of Dietary Beef Tallow and Dextrin on the Growth and Body Composition of Juvenile Far Eastern Catfish Silurus asotus

배합사료의 우지와 덱스트린이 메기(Silurus asotus)의 성장과 체조성에 미치는 영향

  • Kim, Kyoung-Duck (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Jin Do (Inland Aquaculture Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Kang-Woong (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Son, Maeng Hyun (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Han, Hyon Sob (Aquafeed Research Center, National Fisheries Research & Development Institute)
  • 김경덕 (국립수산과학원 사료연구센터) ;
  • 김진도 (국립수산과학원 내수면양식연구센터) ;
  • 김강웅 (국립수산과학원 사료연구센터) ;
  • 손맹현 (국립수산과학원 사료연구센터) ;
  • 한현섭 (국립수산과학원 사료연구센터)
  • Received : 2013.04.10
  • Accepted : 2013.05.14
  • Published : 2013.06.30

Abstract

This study investigated the utilization of beef tallow and dextrin as non-protein energy sources in the diet of juvenile far eastern catfish Silurus asotus. Three replicated groups of juveniles (initial mean weight of 3.6 g) were fed diets containing high levels of beef tallow or dextrin for six weeks. The final mean weight of fish fed on a 17% lipid diet with a high level of beef tallow was significantly higher than that of fish fed on a 9% lipid diet with a high level of dextrin (P=0.04). No significant differences were observed in the feed efficiency and protein efficiency ratio of fish fed on the experimental diets. Crude lipid content and the C18:0, C18:1n-9 and C18:2n-6 contents of whole-body fish were significantly affected by diet (P<0.05). The results of this study suggest that beef tallow is better than dextrin as a non-protein energy source for improving the growth of juvenile far eastern catfish, and that beef tallow could be economically used as an ingredient in practical feed.

Keywords

References

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