Digestibilité chez la Truite arc-en-ciel (Salmo gairdneri) lors de l'adaptation à un nouveau régime alimentaire

Author:

Noüe J. de la,Choubert G.,Pagniez B.,Blanc J.-M.,Luquet P.

Abstract

We have investigated the experimental conditions necessary to obtain accurate digestibility coefficients in rainbow trout (Salmo gairdneri). These conditions concern the lag period which should be observed after changing the diet, the duration of feces collection, and the number of replicates. Every day we collected automatically and then analyzed the feces of five groups of 15 fish each during the 20 d following the administration of a new diet. As early as the 3rd d after changing the diet, digestibility coefficients took definitive values characteristic of that diet. Thus, there were no adaptation phenomena; we observed only a lag period associated with digestive transit rate. Feces may be collected as soon as on the 3rd d after changing the diet. Finally, "number of replicates × number of days" combinations were established to obtain a given accuracy of digestibility coefficients.

Publisher

Canadian Science Publishing

Subject

Aquatic Science,Ecology, Evolution, Behavior and Systematics

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3