Geometric analysis of macronutrient selection in breeds of the domestic dog, Canis lupus familiaris
Although many herbivores and omnivores have been shown to balance their intake of macronutrients when faced with nutritionally variable foods, study of this ability has been relatively neglected in carnivores, largely on the assumption that prey are less variable in nutrient composition than the foo...
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fthighwire:oai:open-archive.highwire.org:beheco:24/1/293 2023-05-15T15:49:47+02:00 Geometric analysis of macronutrient selection in breeds of the domestic dog, Canis lupus familiaris Hewson-Hughes, Adrian K. Hewson-Hughes, Victoria L. Colyer, Alison Miller, Andrew T. McGrane, Scott J. Hall, Simon R. Butterwick, Richard F. Simpson, Stephen J. Raubenheimer, David 2013-01-01 00:00:00.0 text/html http://beheco.oxfordjournals.org/cgi/content/short/24/1/293 https://doi.org/10.1093/beheco/ars168 en eng Oxford University Press http://beheco.oxfordjournals.org/cgi/content/short/24/1/293 http://dx.doi.org/10.1093/beheco/ars168 Copyright (C) 2013, International Society for Behavioral Ecology Research Article TEXT 2013 fthighwire https://doi.org/10.1093/beheco/ars168 2015-02-28T18:07:29Z Although many herbivores and omnivores have been shown to balance their intake of macronutrients when faced with nutritionally variable foods, study of this ability has been relatively neglected in carnivores, largely on the assumption that prey are less variable in nutrient composition than the foods of herbivores and omnivores and such mechanisms therefore unnecessary. We performed diet selection studies in 5 breeds of adult dog ( Canis lupus familiaris ) to determine whether these domesticated carnivores regulate macronutrient intake. Using nutritional geometry, we show that the macronutrient content of the diet was regulated to a protein:fat:carbohydrate ratio of approximately 30%:63%:7% by energy, a value that was remarkably similar across breeds. These values, which the analysis suggests are dietary target values, are based on intakes of dogs with prior experience of the respective experimental food combinations. On initial exposure to the diets (i.e., when naive), the same dogs self-selected a diet that was marginally but significantly lower in fat, suggesting that learning played a role in macronutrient regulation. In contrast with the tight regulation of macronutrient ratios, the total amount of food and energy eaten was far higher than expected based on calculated maintenance energy requirements. We interpret these results in relation to the evolutionary history of domestic dogs and compare them to equivalent studies on domestic cats. Text Canis lupus HighWire Press (Stanford University) Behavioral Ecology 24 1 293 304 |
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Research Article Hewson-Hughes, Adrian K. Hewson-Hughes, Victoria L. Colyer, Alison Miller, Andrew T. McGrane, Scott J. Hall, Simon R. Butterwick, Richard F. Simpson, Stephen J. Raubenheimer, David Geometric analysis of macronutrient selection in breeds of the domestic dog, Canis lupus familiaris |
topic_facet |
Research Article |
description |
Although many herbivores and omnivores have been shown to balance their intake of macronutrients when faced with nutritionally variable foods, study of this ability has been relatively neglected in carnivores, largely on the assumption that prey are less variable in nutrient composition than the foods of herbivores and omnivores and such mechanisms therefore unnecessary. We performed diet selection studies in 5 breeds of adult dog ( Canis lupus familiaris ) to determine whether these domesticated carnivores regulate macronutrient intake. Using nutritional geometry, we show that the macronutrient content of the diet was regulated to a protein:fat:carbohydrate ratio of approximately 30%:63%:7% by energy, a value that was remarkably similar across breeds. These values, which the analysis suggests are dietary target values, are based on intakes of dogs with prior experience of the respective experimental food combinations. On initial exposure to the diets (i.e., when naive), the same dogs self-selected a diet that was marginally but significantly lower in fat, suggesting that learning played a role in macronutrient regulation. In contrast with the tight regulation of macronutrient ratios, the total amount of food and energy eaten was far higher than expected based on calculated maintenance energy requirements. We interpret these results in relation to the evolutionary history of domestic dogs and compare them to equivalent studies on domestic cats. |
format |
Text |
author |
Hewson-Hughes, Adrian K. Hewson-Hughes, Victoria L. Colyer, Alison Miller, Andrew T. McGrane, Scott J. Hall, Simon R. Butterwick, Richard F. Simpson, Stephen J. Raubenheimer, David |
author_facet |
Hewson-Hughes, Adrian K. Hewson-Hughes, Victoria L. Colyer, Alison Miller, Andrew T. McGrane, Scott J. Hall, Simon R. Butterwick, Richard F. Simpson, Stephen J. Raubenheimer, David |
author_sort |
Hewson-Hughes, Adrian K. |
title |
Geometric analysis of macronutrient selection in breeds of the domestic dog, Canis lupus familiaris |
title_short |
Geometric analysis of macronutrient selection in breeds of the domestic dog, Canis lupus familiaris |
title_full |
Geometric analysis of macronutrient selection in breeds of the domestic dog, Canis lupus familiaris |
title_fullStr |
Geometric analysis of macronutrient selection in breeds of the domestic dog, Canis lupus familiaris |
title_full_unstemmed |
Geometric analysis of macronutrient selection in breeds of the domestic dog, Canis lupus familiaris |
title_sort |
geometric analysis of macronutrient selection in breeds of the domestic dog, canis lupus familiaris |
publisher |
Oxford University Press |
publishDate |
2013 |
url |
http://beheco.oxfordjournals.org/cgi/content/short/24/1/293 https://doi.org/10.1093/beheco/ars168 |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_relation |
http://beheco.oxfordjournals.org/cgi/content/short/24/1/293 http://dx.doi.org/10.1093/beheco/ars168 |
op_rights |
Copyright (C) 2013, International Society for Behavioral Ecology |
op_doi |
https://doi.org/10.1093/beheco/ars168 |
container_title |
Behavioral Ecology |
container_volume |
24 |
container_issue |
1 |
container_start_page |
293 |
op_container_end_page |
304 |
_version_ |
1766384812151537664 |