Assimilation efficiency and growth of Rhinoceros Auklet chicks fed with Japanese Sand Lance and krill

DOI Web Site Web Site 37 References
  • KUME Yuna
    Laboratory of Environmental Zoology, Faculty of Agriculture, Meijo University
  • NIIZUMA Yasuaki
    Laboratory of Environmental Zoology, Faculty of Agriculture, Meijo University
  • KAZAMA Kentaro
    Laboratory of Environmental Zoology, Faculty of Agriculture, Meijo University JSPS
  • ITO Motohiro
    JSPS National Institute of Polar Research
  • YAMASHITA Rei
    Laboratory of Organic Geochemistry (LOG), Tokyo University Agriculture and Technology
  • WATANUKI Yutaka
    Graduate School of Fisheries Sciences, Hokkaido University

Bibliographic Information

Other Title
  • イカナゴとオキアミを給餌したウトウ雛の消化率と成長
  • イカナゴ ト オキアミ オ キュウジ シタ ウトウ ヒナ ノ ショウカリツ ト セイチョウ

Search this article

Abstract

The assimilation efficiency and growth of Rhinoceros Auklet Cerorhinca monocerata chicks (30-35 age of days) fed with Japanese Sand Lance Ammodytes personatus and Antarctic Krill Euphausia superba were investigated. Chicks were fed 79.4 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>± <clig:><cotfcalt:><calgf:>3.1 gwet /d (mean <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>± <clig:><cotfcalt:><calgf:>SD) of sand lance, which included 497.2 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>± <clig:><cotfcalt:><calgf:>14.9 kJ energy, 4.3 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>± <clig:><cotfcalt:><calgf:>0.2 g lipid, and 12.3 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>± <clig:><cotfcalt:><calgf:>0.5 g protein. Chicks were fed 129.3 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>± <clig:><cotfcalt:><calgf:>2.7 gwet /d krill, which include 746.8 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>±<clig:><cotfcalt:><calgf:>15.5 kJ energy, 3.1 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>±<clig:><cotfcalt:><calgf:>0.1 g lipid, and 23.3 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>±<clig:><cotfcalt:><calgf:>0.5 g protein. The assimilation efficiency (corrected with nitrogen retention) of the sand lance-fed chicks (82.8 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>±<clig:><cotfcalt:><calgf:>0.5%) was significantly higher than the krill-fed chicks (76.6 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>±<clig:><cotfcalt:><calgf:>0.6%). During the experiment, daily mass increments of the sand lance-fed chicks were 11.0 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>±<clig:><cotfcalt:><calgf:>4.7 (g/d, n=12) and of the krill-fed chicks 9.7 <clig:0><cotfcalt:0><calgf:ProportionalWidthForm>±<clig:><cotfcalt:><calgf:>2.7 (g/d, n=14). Sand lance-fed chicks gained body mass significantly faster than did krill-fed chicks after controlling for the significant age effect. Krill may be inadequate for chick growth of the auklets due to the poorer lipid content, compared with sand lance.

Journal

References(37)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top