Assessing the capacity for compensatory growth in growth-hormone transgenic coho salmon Oncorhynchus kisutch

被引：2
作者：
Rosales-Velazquez, M. O. [1 ,2 ]
Muttray, A. F. [1 ]
Devlin, R. H. [1 ]
机构：
[1] Fisheries & Oceans Canada, 4160 Marine Dr, W Vancouver, BC V7V 1N6, Canada
[2] Inst Politecn Nacl, Ctr Interdisciplinario Ciencias Marinas, Ave Inst Politecn Nacl S-N, La Paz 23096, MCS, Mexico
来源：
JOURNAL OF FISH BIOLOGY | 2018年 / 92卷 / 05期
关键词：
aquaculture; catch-up growth; compensatory growth; GH-transgenic Coho salmon; Oncorhynchus kisutch; ENERGY-UTILIZATION; BODY-COMPOSITION; PROTEIN; FISHES;
D O I：
10.1111/jfb.13588
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
The effect of feed cycling (consisting of periods of starvation followed by periods of refeeding to satiation) on compensatory growth was evaluated in growth hormone transgenic and non-transgenic wild-type coho salmon Oncorhynchus kisutch. The specific growth rate (G(SR)) of feed-restricted non-transgenic O. kisutch was not significantly different from the G(SR) of fully-fed non-transgenic O. kisutch during two refeeding periods, whereas the G(SR) of feed-restricted transgenic O. kisutch was significantly higher in relation to the G(SR) of fully-fed transgenic O. kisutch during the second refeeding period, but not during the first, indicating that growth compensation mechanisms are different between non-transgenic and growth-hormone (GH)-transgenic O. kisutch and may depend on life history (i.e. previous starvation). Despite the non-significant growth rate compensation in non-transgenic O. kisutch, these fish showed a level of body mass catch-up growth not displayed by transgenic O. kisutch. (c) 2018 Her Majesty the Queen in Right of Canada Journal of Fish Biology (c) 2018 The Fisheries Society of the British Isles
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页码：1333 / 1341
页数：9
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