Polyethylene glycol determined by near-infrared reflectance spectroscopy to estimate faecal output in sheep fed fresh permanent grassland forage

This study evaluated the feasibility of using different doses of polyethylene glycol (PEG) as an external marker of faecal output in sheep fed permanent grasslands fodder and compared two near-infrared reflectance spectroscopy (NIRS) calibration strategies for determining faecal PEG content. Three l...

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Bibliographic Details
Published in:Livestock science 2013-07, Vol.155 (1), p.38-43
Main Authors: Andueza, D., Picard, F., Aufrère, J., Jamot, J., Bechet, G., Baumont, R.
Format: Article
Language:English
Subjects:
Computer Science
cutting
Faeces
feces
forage
Humanities and Social Sciences
Intake
Life Sciences
near-infrared reflectance spectroscopy
NIRS
normal values
Permanent grasslands
Polyethylene glycol
Sheep
wethers
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Summary:This study evaluated the feasibility of using different doses of polyethylene glycol (PEG) as an external marker of faecal output in sheep fed permanent grasslands fodder and compared two near-infrared reflectance spectroscopy (NIRS) calibration strategies for determining faecal PEG content. Three levels of PEG (0.25%, 0.75% and 1.5% of total daily intake) were administered to eight wethers, with each level dosed twice daily. Animals were fed forage obtained from two permanent grasslands cut at two dates during the first cycle of growth. Polyethylene glycol recovery rate was higher (P
ISSN:1871-1413
1878-0490
DOI:10.1016/j.livsci.2013.03.022