低水温期のブリの成長, 飼料効率およびタンパク質消化率に及ぼす酵素処理した魚粉の飼料効果  [in Japanese] Dietary Effects of the Protease Treatments of Fish Meal on the Growth, Feed Efficiency, and Protein Digestibility of Yellowtail During Low Temperature Season  [in Japanese]

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Abstract

魚粉 (FM) を酵素処理しタンパク質の加水分解度の異なる8種の試験飼料を作製し, その影響を低水温期のブリの飼育成績やタンパク質消化率 (APD) から検討した。<BR>無処理FM (トリクロル酢酸 (TCA) 可溶性窒素 (N) 量: 15-17%) の対照飼料区の成績を100としたとき, TCA可溶性N量が25-34%の酵素処理FM区の成績は, 日間増重率 (DGR) が103-109, 飼料効率 (FE) が104-115で無処理FM配合区のそれより優れていた。一方, TCA可溶性N量が37-40%の酵素処理FM区では, DGRが90-101, FEが82-95で成績は低下した。APDは, 無処理FMの値を100としたとき, TCA可溶性N率25-34%の酵素処理FMでは104-110, 同率37-40%の酵素処理FMでは87-96で, 飼育成績と良く一致していた。<BR>以上のことから, 魚粉への酵素処理を施すことにより低水温期のブリのタンパク質消化性や飼育成績が向上すること, しかしその処理を過剰にすると逆に成績が低下することが明らかとなった。

Eight kinds of experimental meals that contain different revels of hydrolyzed proteins were prepared after several protease treatments of the fish meal (FM), and analyzed their dietary effects on the growth performance and protein digestibility of yellowtail, <I>Seriola quinqueradiata</I> during low temperature season.<BR>The group of meals containing 25-34% of TCA soluble nitrogen (N) obtained after the middle treatments of proteases showed higher effects on the daily growth rate (DGR; 1.03-1.09 times to the group of the meals without the protease treatments), feed efficiency (FE; 1.04-1.15 times), and apparent protein digestibility (APD; 1.04-1.10 times) of yellowtail than those of FM containing 15-17% of TCA soluble N without the protease treatments. On the other hand, the group of the meals with excessive protease treatments containing 37-40% of TCA soluble N had worse effects on DGR (0.90-1.01 times), FE (0.82-0.95 times), and APD (0.87-0.96 times) comparing with those of FM without the treatments.<BR>These results indicate that, during low temperature season, feeding with the protease treated FM has the beneficial effects on the growth performance and protein digestibility of yellowtail, although the excessive treatments of FM may have the counterproductive effects.

Journal

  • Aquaculture Science

    Aquaculture Science 50(2), 219-226, 2002-06-20

    Japanese Society for Aquaculture Science

References:  24

Cited by:  4

Codes

  • NII Article ID (NAID)
    10008750722
  • NII NACSIS-CAT ID (NCID)
    AN00124667
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03714217
  • NDL Article ID
    6212634
  • NDL Source Classification
    ZR26(科学技術--農林水産--水産)
  • NDL Call No.
    Z18-761
  • Data Source
    CJP  CJPref  NDL  J-STAGE  JASI 
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