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| 河合, 正人; 市川, 雅賢; 大谷, 昌之; 池滝, 孝; 松岡, 栄; KAWAI, Masahito; ICHIKAWA, Masayoshi; OTANI, Masayuki; IKETAKI, Takashi; MATSUOKA, Sakae. |
| The objective was to evaluate the effect of different proportion of alfalfa silage and corn silage on the nitrogen utilization and milk production of dairy cows. Eighteen lactating Holstein cows were divided into three treatment groups. The cows in the three treatment groups were fed mixture of alfalfa silage and corn silage，which were formulated (dry matter basis) at 1) 80:20 (AS80)，2) 60:40 (AS60) and 3) 40:60 (AS40) ratios，respectively. Grass hay and concentrate were fed also to adjust silage ratio (65% of total DM)，roughage ratio (70% of total DM) and CP contents (15%DM) of the diets among AS80，AS60 and AS40. The ratio of degradable intake protein (DIP) to non-fibrous carbohydrate (NFC) in AS80，AS60 and AS40 were 0.27，0.27 and 0.28，respectively. Milk... |
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Palavras-chave: アルファルファサイレージ; コーンサイレージ; 分解性タンパク質; 窒素利用性; 乳生産; Alfalfa silage; Corn silage; Degradable intake protein; Nitrogen utilization; Milk production. |
| Ano: 2002 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3012 |
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| 佐藤, 基佳; 佐々木, 雄介; 望月, 均; 上野, 博史; 山田, 一孝; 大谷, 昌之; SATO, Motoyoshi; SASAKI, Yusuke; MOTIDUKI, Hitoshi; UENO, Hiroshi; YAMADA, Kazutaka; OTANI, Masayuki. |
| 乳牛のビタミンB群製剤の適正な補給を目的に、健康牛（泌乳中期および乾乳期）と新生子牛のビタミンB1、B2、B6、B12の血中濃度を測定した。泌乳中期群(n=5)ではB1、B2、B6、B12の血中濃度は51.2±1.2ng/ml、92.1±3.9ng/ml、37.8±1.7ng/ml、220.2±16.3pg/ml、乾乳期群(n=4)では39.5±3.3ng/ml、75.2±4.6ng/ml、42.6±2.2ng/ml、406.8±48.1pg/mlで、泌乳中期群と比較してB1、B2で低値、B12で高値（p<0.05)を示した。新生子牛群(n=9)では、出生直後のビタミンB1、B2、B6、B12の血中濃度は47.0±3.6ng/ml、169.9±6.7ng/ml、4.1±0.2ng/ml、357.4±44.2pg/mlで、生後20日目では30.0±1.4ng/ml、130.9±6.4ng/ml、16.5±0.6ng/ml、230.4±13.9pg/mlを示し、ビタミンB6を除くビタミンB群の血中濃度は生後漸減した。 以上の成績から飼養状況および個体の状況により血中濃度が異なるため、適正な補給に当たっては対象牛のビタミンB群の血中濃度を把握し、今回の測定値を参考として適量の薬用量の決定が必要であると考えられた。Blood concentrations of the vitamin B complex (B1，B2，B6，and B12) were measured in healthy cows both during the lactation period and during the non-lactation period，and in calves from 1 to 20 days... |
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Palavras-chave: 乳牛; 予防; 治療; ビタミンB群; Dairy cattle; Prevention; Treatment; Vitamin B complex. |
| Ano: 2003 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2931 |
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| 平本, 典子; 大谷, 昌之; 田辺, 茂之; 宇塚, 雄次; 更科, 孝夫; HIRAMOTO, Noriko; OHTANI, Masayuki; TANABE, Shigeyuki; UZUKA, Yuji; SARASHINA, Takao. |
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Palavras-chave: 子牛; 未経産牛; 硝酸ナトリウム; T4; T3; Calf; Heifer; Sodium nitrate. |
| Ano: 2001 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1249 |
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