The effect of shelter on welfare of juvenile Atlantic salmon Salmo salar reared under a feed restriction regimen

被引：14

作者：

Persson, L. ^{[1
]}

Alanara, A. ^{[1
]}

机构：

[1] Swedish Univ Agr Sci, Dept Wildlife Fish & Environm Studies, SE-90183 Umea, Sweden

来源：

JOURNAL OF FISH BIOLOGY | 2014年 / 85卷 / 03期

基金：

瑞典研究理事会;

关键词：

aggressive behaviour; enrichment; fat; fin damage; hatchery; wild-like; FIN EROSION; BODY-COMPOSITION; HATCHERY TANKS; GROWTH; TROUT; WILD; DOMINANCE; SURVIVAL; DAMAGE; VARIABILITY;

D O I：

10.1111/jfb.12443

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

This study investigated whether shelter (presence or absence) affected the frequency of fin damage in Atlantic salmon Salmo salar exposed to feed restrictions (0.73 or 0.33% of body mass day(-1)). The presence of shelter had a positive effect on the pectoral fins at both feed ration levels and on the dorsal fin at the higher ration level but it had a negative effect on survival. The reduced feed rations resulted in fish of the same size and nutritional status as wild fish. The provision of shelter has potential to mitigate the negative effects of feed restrictions on fin quality, but the optimal shelter design requires some additional investigation. (C) 2014 The Fisheries Society of the British Isles

引用

页码：645 / 656

页数：12

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