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	Provedor de dados OAK (1) Autor MIURA, Sinya (1) NISHIMURA, Kazuyuki (1) SUZUKI, Mitsuyoshi (1) 三浦, 伸也 (1) 西村, 和行 (1) 鈴木, 三義 (1) Mais... Palavra-chave Age-Season-DIM subclass (1) Herd-Test Day (1) Milk Urea Nitrogen (1) ステージサブクラス (1) 乳中尿素窒素濃度 (1) 分娩年齢 (1) 季節 (1) 牛群・検定日効果 (1) Mais... Ano 2005 (1) País Japan (1) Idioma Japonês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última 北海道における乳中尿素窒素濃度(MUN)に及ぼす環境要因効果の推定 OAK 西村, 和行; 三浦, 伸也; 鈴木, 三義; NISHIMURA, Kazuyuki; MIURA, Sinya; SUZUKI, Mitsuyoshi. This study aimed to estimate the effects of environmental factors on milk urea nitrogen (MUN) concentrations using field data collected by Dairy Cattle Milk Recording & Testing programs. Data consisted of 5，797，500 test-day records of MUN and milk yields，and fat and protein obtained from 5，266 Holstein herds in Hokkaido，Japan. Data were divided into four sets by parities of one，two，three and over four. ANOVA was used for data analysis. Herd-test-day (HTD) effects，Calving Age X Season (AS) effects and the lactation stage had significant effects on MUN，with concentrations tending to increase from the peak of lactation until it ended.... Palavras-chave: 乳中尿素窒素濃度; 分娩年齢; 季節; ステージサブクラス; 牛群・検定日効果; Milk Urea Nitrogen; Age-Season-DIM subclass; Herd-Test Day. Ano: 2005 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3420 Registros recuperados: 1 Primeira ... 1 ... Última

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