Effects of forage-to-concentrate ratio and dietary fiber manipulation on gas emissions and olfactometry from manure of Holstein heifers

The objective of this experiment was to determine the effects of differing ratios of forage to concentrate (F:C) and fiber levels on odor and gas emissions from manure. Eight Holstein dairy heifers (362.45±4.53 d of age and 335.6±7.41 kg of body weight) were randomly assigned to a split-plot, 4×4 La...

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Veröffentlicht in:	Journal of dairy science 2015-03, Vol.98 (3), p.1928-1937
Hauptverfasser:	Lascano, G.J., Heinrichs, A.J., Gary, R.R., Topper, P.A., Brandt, R.C., Adviento-Borbe, A., Fabian, E.E.
Format:	Artikel
Sprache:	eng
Schlagworte:	air ammonia Ammonia - analysis Animal Feed Animals body weight carbon dioxide Carbon Dioxide - analysis Cattle - metabolism corn stover dairy heifers Diet - veterinary dietary fiber Dietary Fiber - administration & dosage Dietary Fiber - metabolism feed concentrates Female forage forage to concentrate ratio greenhouse gas emissions headspace analysis heifer Holstein Humans Hydrogen-Ion Concentration Manure - analysis methane Methane - analysis neutral detergent fiber nitrous oxide odor emissions Odorants - analysis odors olfactometry Olfactometry - methods Zea mays
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