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논문 기본 정보

자료유형
학술저널
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한국수산과학회 Fisheries and Aquatic Sciences Fisheries and Aquatic Sciences 제23권 제2호
발행연도
2020.1
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1 - 8 (8page)

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Background: To minimize the use of antibiotics and to obtain a more sustainable fish culture and aquaculture industry, development of alternative natural source of immunostimulant to replace antibiotic in aquafeed is highly needed. Objective: Dietary inclusion effect of yacon (YC), ginger (GG), and blueberry (BB) on growth, body composition, and disease resistance of black rockfish against Vibrio anguillarum was compared to ethoxyquin (EQ). Methods: Four hundred eighty juvenile (an initial weight of 4.2 g) fish were randomly distributed into 12 of 50 L flowthrough tanks (forty fish per tank). Four experimental diets were prepared; the control (Con) diet with 0.01% EQ inclusion, and YC, GG, and BB diets at 1% each additive inclusion. Each additive was included into the experimental diets at the expense of wheat flour. Each diet was assigned to triplicate tanks of fish and hand-fed to satiation twice daily for 8 weeks. At the end of 8-week feeding trial, 20 fish from each tank fish were artificially infected by intraperitoneal injection with 0.1 mL of culture suspension of pathogenic V. anguillarum containing 3.3 × 106 cfu/mL respectively. Fish were monitored for the following 8 days after V. anguillarum infection and dead fish were removed every 6 h for the first 4 days and 12 h for the rest of the study. Results: Weight gain, specific growth rate (SGR), and feed efficiency ratio (FER) of fish fed the YC diet was higher than those of fish fed all other diets. However, feed consumption, protein efficiency ratio, and protein retention was not affected by dietary additive. Moisture, crude protein, and crude lipid content of the whole body of fish were affected by dietary additive. Analysis of the Kaplan-Meier survival curves showed that survival of fish fed the YC, BB, and GG diets was higher than the Con diet. Conclusion: Oral administration of YC can improve not only weight gain, SGR, and FER of black rockfish, but lower mortality of rockfish at occurrence of V. anguillarum.

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참고문헌 (58)

참고문헌 신청
Akintobi OA / 2013 / Antimicrobial activity of Zingiber officinale(ginger)extract against some selected pathogenic bacteria / Nat Sci 11:7~15 google schola Alderman DJ / 1998 / Antibiotic use in aquaculture : development of resistancepotential for consumer health risks / Int J Food Sci Technol 33:139~155 google schola Aminikhoei A / 2013 / Effects of different dietary lipid sources on growth performance, fatty acid composition, and antioxidant enzyme activity of juvenile rockfish. Sebastes schlegeli / J World Aquac Soc 44:716~725 google schola Bai SC / 2001 / Effects of Chlorella powder as a feed additive on growth performance in juvenile Korean rockfish, Sebastes schlegeli(Hilgendorf) / Aquacult Res 32:92~98 google schola Balestra F / 2011 / Evaluation of antioxidant, rheological and sensorial properties of wheat flour dough and bread containing ginger powder / LWT 44:700~705 google schola

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