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| Registros recuperados: 41 | |
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| 佐藤, 基佳; 山崎, 毅; 佐々木, 直樹; 嶋田, 照雄; 木田, 克弥; 大和田, 章子; 近池, 真人. |
| ホルスタイン種新生子牛にビタミンB類を含む経口投与用サプリメントを投与してビタミンB1,B2,B6,B12の血中濃度を測定した。ビタミンB群製剤を雌は生後19日間に日量10mlと20ml投与群(n=4), 雄は生後6日間日量mlと10ml投与群(n=4）の各2群について実施した。非投与群では，生後血中ビタミン濃度はビタミンB6以外は減少したが，ビタミンBを含むサプリメントの投与によりビタミンB1のみが増加を示した。非投与群のビタミンB6は生後増加したがサプリメントの投与により増加率は増大した。これらの結果によりサプリメントの投与のよりビタミンB1とビタミンB6の血中濃度は有意に増加することが確認された。 |
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Palavras-chave: 乳牛; 予防; ビタミンB群. |
| Ano: 2007 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1300 |
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| KAWASHIMA, Chiho; KANEKO, Etsushi; AMAYA MONTOYA, Carlos; MATSUI, Motozumi; YAMAGISHI, Norio; MATSUNAGA, Nobuyoshi; ISHII, Mitsuo; KIDA, Katsuya; MIYAKE, Yoichi; MIYAMOTO, Akio; 川島, 千帆; 松井, 基純; 石井, 三都夫; 木田, 克弥; 三宅, 陽一; 宮本, 明夫. |
| The aim of this study was to investigate the relationship between the first ovulation within 3 weeks postpartum and subsequent ovarian cycles and fertility in high producing dairy cattle in Hokkaido, Japan. In Experiment 1, 110 cows (44 primiparous and 66 multiparous) were used to determine the effects of the first ovulation within 3 weeks postpartum on subsequent ovarian cycles. Milk samples were collected twice weekly from 7 to 100 days postpartum. The first ovulation was identified by an increase in milk progesterone (P4) to more than 1 ng/ml within 3 weeks postpartum. The numbers of cows showing ovulation and anovulation within 3 weeks postpartum were 31 (70.5%) and 13 (29.5%) in the primiparous cows and 35 (53.0%) and 31 (47.0%) in the multiparous... |
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Palavras-chave: Dairy cow; First ovulation; Postpartum; Resumption of ovarian cycle. |
| Ano: 2006 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/916 |
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| Kawashima, Chiho; Fukihara, Saori; Maeda, Mayumi; Kaneko, Etsushi; Montoya, Carlos Amaya; Matsui, Motozumi; Shimizu, Takashi; Matsunaga, Nobuyoshi; Kida, Katsuya; Miyake, Yoichi; Schams, Dieter; Miyamoto, Akio; 川島, 千帆; 松井, 基純; 清水, 隆; 木田, 克弥; 三宅, 陽一; 宮本, 明夫. |
| Recent studies suggest that IGF-I is a crucial regulatory factor in follicular growth during early post-partum period. The aim of the present study was to determine in detail the changing profiles of metabolic and reproductive hormones in relation to ovulation of the dominant follicle (DF) of the first follicular wave post-partum in high-producing dairy cows. Plasma concentrations of related hormones in 22 multiparous Holstein cows were measured from 4 weeks pre-partum to 3 weeks post-partum, and the development of DF was observed with colour Doppler ultrasound. Thirteen cows showed ovulation by 15.2 days post-partum. Anovulatory cows showed higher GH and lower IGF-I levels than those in ovulatory cows during the peri-partum period. Each DF developed... |
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Palavras-chave: GROWTH-FACTOR-I; COMPETITIVE ENZYME-IMMUNOASSAY; ENERGY-BALANCE; OVARIAN ACTIVITY; STIMULATING-HORMONE; ESTRADIOL PRODUCTION; BODY CONDITION; MESSENGER-RNA; HOLSTEIN COWS; IGF-I. |
| Ano: 2007 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1658 |
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| 山田, 一孝; 山口, 敏朗; 陳, 忠正; 稲沢, 直生実; 石井, 三都夫; 佐々木, 基樹; 木田, 克弥; 岸本, 海織; 古濱, 和久; YAMADA, Kazutaka; ISHII, Mitsuo; SASAKI, Naoki; KIDA, Katsuya. |
| ベントナイトのセシウム体内移行抑制効果について調べた。実験には，ホルスタイン種子牛6頭を使用し，28日の実験期間中，全頭に安定同位体の塩化セシウム（3.0mg/kg/day）を人工乳に溶解し，投与した。塩化セシウムに加えベントナイト0.5w/v％を人工乳に懸濁した投与群（n=3）と塩化セシウムのみの対照群（n=3）の2群を設定した。実験開始0，1，2，3，7，14，21および28日目に採血，28日目に骨格筋，心臓，肝臓，腎臓および糞便を採材し，ICP-MS （inductively coupled plasma mass spectrometry） によるセシウム濃度を測定した。臓器中のセシウム濃度からベントナイトの効果は明らかではなかったが，血球中セシウム濃度平均値は投与後14日まで投与群が対照群よりも低値を示した。このことから，ベントナイトによるセシウム体内移行抑制効果の可能性が示唆された。 |
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Palavras-chave: ベントナイト; 子牛; 塩化セシウム. |
| Ano: 2013 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3898 |
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| HAYASHI, Ken-Go; MATSUI, Motozumi; ACOSTA, Tomas J.; KIDA, Katsuya; MIYAMOTO, Akio; 松井, 基純; 木田, 克弥; 宮本, 明夫. |
| Luteinizing hormone (LH) surge and follicle rupture act as trigger to start corpus luteum (CL) formation. Thus, we aimed to investigate whether a dominant follicle that has not been exposed to an LH surge can become a functional CL. For this purpose, follicular fluid from the dominant follicles (DF) of cows was aspirated before or after a GnRH-induced LH surge, and subsequent CL formation was observed. Holstein cows were divided into four groups as follows: Luteal phase, a DF was aspirated 7 days after GnRH injection; Pre-LH surge, a DF was aspirated 42 h after PGF2α injection during the mid luteal phase; Post-LH surge, a DF was aspirated 24 h after GnRH injection following PGF2α; and Intact follicle, ovulation was induced by GnRH injection after PGF2α.... |
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Palavras-chave: Corpus luteum formation; Cow; Follicle aspiration; LH surge. |
| Ano: 2006 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2982 |
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| Registros recuperados: 41 | |
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