Estimation of Methane Production by Lactating and Dry Crossbred Holstein Cows in Thailand

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
本文フルテキスト
44-04-13.pdf563.26 KB

The methane (CH4) produced by lactating and dry crossbred Holstein cows, together with factors affecting CH4 production, were investigated using data obtained from balance trials of cows in Thailand (48 observations). The CH4 production per dry matter intake (DMI) of lactating cows tended to be lower than that for dry cows (25.7 L/kg vs. 28.7 L/kg DMI; P < 0.10), which was due to the higher energy intake of lactating cows. A positive correlation was observed between CH4 production and DMI (r = 0.70; P < 0.001). The CH4 production was also founded to be related to crude fiber (CF) and nitrogen free extract (NFE) intake from a multiple regression equation (r = 0.77, P < 0.001), and the coefficient of CF was higher than that of NFE, indicating higher methanogenesis of CF than of NFE. The decreasing CH4 production per milk production with the increase in milk production (r = -0.62; P = 0.003) shows that improvements in the individual milk yield suppress the CH4 production per milk production. From the findings of the present study and available statistical information in Thailand, it was estimated that CH4 production by cows increased as the cow population increased over a 5-year period from 1999. Because the CH4 production per milk yield showed little change from 1999 to 2004, in terms of milk productivity and suppression of CH4 production, improving individual milk yield will be important in Thailand.

刊行年月日
作成者 ODAI Masaharu NONAKA Itoko SUMAMAL Witthaya NARMSILEE Rumphrai PHOLSEN Pimpaporn CHUENPRECHA Taweesak PHROMLOUNGSRI Arun KHOTPROM Nuttanart PHAOWPHAISAL Ittiphon INDRAMANEE Somchit SUZUKI Tomoyuki
著者キーワード

carbon source

dry matter intake

milk production

公開者 Japan International Research Center for Agricultural Sciences
オンライン掲載日
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
44
4
開始ページ 429
終了ページ 434
DOI 10.6090/jarq.44.429
権利 Japan International Research Center for Agricultural Sciences
言語 eng

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