Validation of dual-energy x-ray absorptiometry for determining in vivo body composition of chickens

Poultry Science
Q SwennenJ Buyse

Abstract

The purpose of this study was to validate dual-energy x-ray absorptiometry (DXA) for measuring the body composition of chickens in vivo. Four trials were conducted with broiler chickens using a DXA instrument (Lunar, DPX-L) and small animal total body scan software (version 4.7a). In the first 2 trials, the effects of scan mode (high resolution or detail slow), scanning position (ventral or dorsal), and the use of attenuating materials (AM) (2-mm polyvinyl chloride or 4-mm polystyrene) on the precision and values of the DXA parameters body mass, lean tissue mass, fat tissue mass and percentage, bone mineral content (BMC), and bone mineral density (BMD) were evaluated. The precision was highest for body mass and lean tissue mass, followed by BMC and BMD, and was lowest for fat tissue mass and percentage. The precision of the measurements was not influenced by scan mode, position, or type of AM. In contrast, the values for all DXA parameters except body mass were significantly influenced by the scan mode but not by the position. The high resolution mode gave significantly higher estimates of fat mass and BMC but significantly lower measures of lean tissue mass and BMD compared with the detail slow mode. A significant difference b...Continue Reading

Citations

Jun 9, 2016·Journal of Toxicology and Environmental Health. Part a·C J GordonP M Phillips
Dec 5, 2017·Animal : an International Journal of Animal Bioscience·A S ValableM P Létourneau-Montminy
Mar 30, 2017·Journal of the World Aquaculture Society·Maria S JohnsonStephen A Watts
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Dec 6, 2008·Journal of Physiological Anthropology·Steven ProvynThomas Reilly
Aug 31, 2011·Revista latino-americana de enfermagem·Jose Maria MoranJuan Diego Pedrera-Zamorano

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