Experimental design, statistical analysis and modelling of dietary nutrient requirement studies for fish: a critical review

By Shearer. 2000

296 citations recorded by the source corpus.

A limited survey of published reports on dietary nutrient requirement estimates for fish (three journals, 46 papers) indicates that broken-line analysis and analysis of variance (ANOVA) are often used to estimate nutrient requirements from dose‐response data. The application of regression models using published treatment mean values to re-evaluate estimates was possible using 33 of these reports. Re-evaluation suggests that the broken-line method and ANOVA frequently underestimate the requirement. Regression produced estimates that averaged approximately twice, but were up to five times the published requirement. Additional problems that prevented re-evaluation or produced errors in the original estimates were: failure to include nutrient levels high enough to produce a maximum response, failure to space nutrient input levels closely enough to adequately model the dose‐response relationship, an apparent failure to screen data before analysis, and insuAcient model diagnosis. Examples from the literature are presented to illustrate how design, method of analysis and the choice of model aAect the requirement estimate. The eAects of measurement frequency and the experiment duration on the resulting requirement estimate are discussed. A set of protocols is presented to help improve nutrient requirement estimates.

Subfields: Aquatic Science, Nature and Landscape Conservation, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/2f0deb5c619894699c0bf60aa24a07db200a23ca

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In Aquatic Science

In Nature and Landscape Conservation

In Water Science and Technology

Citations in the corpus

Evaluation of poultry by-product meal in commercial diets for hybrid striped bass (Morone chrysops ♀×M. saxatilis ♂) in recirculated tank production (2006, background): “…Rawles, 2005; Gaylord et al., 2005) suggest that hybrid striped bass respondwell to diets containing supplemental amino acids; however, the upper limit of supplementation in these studies was usually below what Shearer (2000), based on the theory of Mercer et al. (1989), would define as inhibiting.”
Fish oil replacement in finfish nutrition (2009, methodology): “2001), a longer experimental period (Shearer 2000), the use of a larger P value to detect significance differences (Shearer & Storebakken 2002) or a different statistical test (i.”
A feed is only as good as its ingredients – a review of ingredient evaluation strategies for aquaculture feeds (2007, unknown): “bility levels or break points (Shearer 2000).”
Thoughts for the Future of Aquaculture Nutrition: Realigning Perspectives to Reflect Contemporary Issues Related to Judicious Use of Marine Resources in Aquafeeds (2018, unknown): “Rather than belabor those matters here, we refer readers to the well-articulated 75 arguments of others (Shearer 2000; Barrows et al., 2008; Bureau 2011; Salze et al., 2011).”
Effect of dietary protein level on growth and survival of juvenile freshwater crayfish Cherax quadricarinatus (Decapoda: Parastacidae) (2003, methodology): “Growth responses (in terms of average weight gain in grams) to dietary protein concentrations were fitted to a quadratic model (second-order polynomial) (Zeitoun et al. 1976; Gurure et al. 1995; Shearer 2000):”