| Effects of season and body condition on appetite, body mass and body composition in ad libitum fed pony mares. | |
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MedLine Citation:
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PMID: 21146430 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Changes in appetite, body mass (BM), body condition score (BCS), direct (ultrasonographic) and indirect (deuterium oxide dilution technique) measures of body fat were monitored in Welsh Mountain pony mares (n=11, 5-19years of age) offered ad libitum access to a complete diet (gross energy 16.9±0.07MJ/kg dry matter) for 12weeks during summer (n=6; 246±20kg) and winter (n=5; 219±21kg). At the outset, each group comprised two thin (BCS 1-3/9), moderate (BCS 4-6/9) and obese (BCS 7-9/9) animals. For ponies that were non-obese at the outset, BM was gained more rapidly (P=0.001) in summer (0.8±0.1kg/day) than winter (0.6±0.0kg/day). This was associated with a seasonal increase in dry matter intake (DMI) which became maximal (summer, 4.6±0.3% BM as DMI/day; winter, 3.5±0.1% BM as DMI/day) during the second month. The appetite of the obese ponies was half that reported for non-obese animals in the summer and BM remained constant irrespective of season. Body 'fatness' increased progressively for non-obese but not obese ponies. Body fat content was exponentially associated with increasing BCS but BCSs >6 were not useful indicators of actual body fat. Endogenous circannual mechanisms to suppress winter weight gain were insufficient to prevent the development of obesity in ad libitum fed ponies. |
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Authors:
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Alexandra H A Dugdale; Gemma C Curtis; Peter J Cripps; Patricia A Harris; Caroline McG Argo |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2010-12-9 |
Journal Detail:
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Title: Veterinary journal (London, England : 1997) Volume: - ISSN: 1532-2971 ISO Abbreviation: - Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9706281 Medline TA: Vet J Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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University of Liverpool, School of Veterinary Science, Leahurst, Chester High Road, Neston, Wirral CH64 7TE, UK. |
Export Citation:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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