Methane emissions from sheep fed fresh pasture

Autor:	S Muetzel, Harry Clark
Rok vydání:	2015
Předmět:	Methane emissions geography geography.geographical_feature_category Soil Science Plant Science Pasture Methane chemistry.chemical_compound chemistry Agronomy Single equation Energy density Animal Science and Zoology Dry matter Adult sheep Methane production Agronomy and Crop Science
Zdroj:	New Zealand Journal of Agricultural Research. 58:472-489
ISSN:	1175-8775 0028-8233
DOI:	10.1080/00288233.2015.1090460
Popis:	Methane emissions from ruminants are the major single source of greenhouse gases in New Zealand and considerable effort has gone into the measurement and prediction of these emissions. This paper analyses methane emissions measured in respiration chambers from adult sheep and lambs fed fresh-cut pasture of different quality. Results show that the major driver of methane production (pCH4, g/d) is dry matter intake (DMI, kg/d). Pasture quality affected methane emissions only in animals less than 1 year of age. A single equation to be used for all sheep based on DMI alone (ln(pCH4) = 0.792(0.0275) ln(DMI) + 3.1(0.03)) or a two-equation approach with an equation for sheep >1 year based on DMI (ln(pCH4) = 0.826(0.0438) ln(DMI) + 3.15(0.017)) and one for sheep
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::198f3ef9e89384d821adf2479fad2341 https://doi.org/10.1080/00288233.2015.1090460 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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