Effects of dry pellets containing astaxanthin and squid meal on the spawning performance of striped jack Pseudocaranx dentex.

• VASSALLO-AGIUS ROBERT

  Laboratory of Fish Nutrition, Department of Aquatic Biosciences, Tokyo University of Fisheries

• WATANABE TAKESHI

  Laboratory of Fish Nutrition, Department of Aquatic Biosciences, Tokyo University of Fisheries

• IMAIZUMI HITOSHI

  Komame Station of Japan Sea Farming Association

• YAMAZAKI TETSUO

  Komame Station of Japan Sea Farming Association

• SATOH SHUICHI

  Laboratory of Fish Nutrition, Department of Aquatic Biosciences, Tokyo University of Fisheries

• KIRON VISWANATH

  Laboratory of Fish Nutrition, Department of Aquatic Biosciences, Tokyo University of Fisheries

抄録

This study was conducted to investigate the effect of squid meal and astaxanthin in dry pellets on the spawning performance of striped jack. Two groups of 8-year-old fish with an average bodyweight of 3.5±0.4 kg were used. The control group was fed a raw fish mix (RF) and the experimental group was fed steam dry pellets (as-DP) containing 10 p.p.m. astaxanthin and squid meal, the latter replacing half the fish meal. Each group was fed once a day, three times a week in floating net cages for a period of 5 months. Seven females and seven males were selected from each group and transferred to 65 m³ indoor concrete tanks for spawning, where they were kept at optimum spawning conditions (22°C) for 1 month. The average bodyweights of selected fish were 3.8±0.5 kg and 3.8±0.6 kg for the RF and as-DP groups, respectively. Both groups spawned a total of 18 times and the mean total egg production and egg quality, measured in terms of buoyancy, fertilization and hatching rates, showed no significant differences (P>0.05) between groups. Total larval production was 679.9×10³ and 678.1×10³ larvae/kg-female for the RF and as-DP groups, respectively. These results show that the combination of astaxanthin and squid meal in dry pellets for striped jack broodstock improved the overall spawning performance to a level similar to that of fish fed on RF.

収録刊行物

• Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ

  Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ 67 (4), 667-674, 2001

  公益社団法人 日本水産学会

キーワード

• astaxanthin
• dry pellets
• Pseudocaranx dentex
• spawning
• squid meal
• striped jack

詳細情報

• CRID: 1390282679406094336
• NII論文ID: 130003903602
• NII論文ID: 30014677696
• NII論文ID: 10008269976
• NII書誌ID: AA10993718
• DOI: 10.1046/j.1444-2906.2001.00304.x
• ISSN: 14442906
• ISSN: 09199268
• NDL書誌ID: 5893005
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5893005
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可