Naoto NAKANISHI

National Agriculture and Food Research Organization

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Tomoya Yamada

National Agriculture and Food Research Organization

Shin‐ichi Kawakami

Hiroshima University

Mikito HIGUCHI

Institute of Livestock and Grassland Science

Yasuhiro Aoki

Japanese Red Cross Narita Hospital

Yimin Cai

Zhengzhou University

Katsuhiro Aikawa

Hokkaido University Hospital

Mitsuru MITSUMOTO

Institute of Livestock and Grassland Science

Takayuki MURAMOTO

Iwate University

Toshio Yamazaki

RIKEN Center for Biosystems Dynamics Research

T. Mitsuhashi

Western Region Agricultural Research Center

Cooperative Institutions

Institute of Livestock and Grassland Science

National Agriculture and Food Research Organization

National Institute of Animal Health

Western Region Agricultural Research Center

Kyoto University

Kansai University

Osaka University

Hokkaido University

Chugoku Electric Power (Japan)

Kyushu University

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Effects of Vitamin A on the Meat Productivity of Japanese Black Steers.

Nihon Chikusan Gakkaiho (2002)

Naoto NAKANISHI Tomoya Yamada Mitsuru MITSUMOTO T. Mitsuhashi Katsuhiro Aikawa

ビタミンAの制限が黒毛和種去勢牛の産肉性に及ぼす影響を検討するため, ビタミンA制限区と給与区を設けて開始月齢が10ヵ月齢 (10ヵ月齢試験) と15ヵ月齢 (15ヵ月齢試験) の肥育試験を行った. 10ヵ月齢試験の肥育期間は平均11ヵ月, 15ヵ月齢試験は平均17ヵ月であった. 肥育期間中の日増体重, 飼料摂取量には制限区と給与区で差がなかった. 制限区のロース芯面積, バラの厚さ, 歩留基準値は給与区より大きくなったが, 牛脂肪交雑基準 (BMS) ナンバーと牛肉色基準 (BCS) ナンバーにビタミンAの影響は認められなかった. 枝肉中の筋肉割合は制限区が給与区より有意に大きく, 脂肪割合は制限区が給与区より有意に小さかった. またビタミンAの制限がロース芯面積, 枝肉構成割合に及ぼす影響は, 10ヵ月齢試験より15ヵ月齢試験のほうがより明確であった. 牛成長ホルモン放出因子の負荷による血漿中成長ホルモンの反応は, 制限区の方が給与区より低い傾向を示した. 以上の結果よりビタミンAの制限は枝肉中の筋肉割合を増加させ脂肪割合を減少させる可能性があることが示唆された.

10.2508/chikusan.73.273

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Citations (7)

Radiocesium Distribution in the Tissues of Japanese Black Beef Heifers Fed Fallout-Contaminated Roughage Due to the Fukushima Daiichi Nuclear Power Station Accident

Bioscience Biotechnology and Biochemistry (2012)

Keisuke Sasaki Masayuki Hayashi Takumi Narita Michiyo Motoyama Mika Oe

This study examined the accumulation and tissue distribution of radioactive cesium nuclides in Japanese Black beef heifers raised on roughage contaminated with radioactive fallout due to the accident at the Fukushima Daiichi Nuclear Power Station on March 2011. Radiocesium feeding increased both (134)Cs and (137)Cs levels in all tissues tested. The kidney had the highest level and subcutaneous adipose had the lowest of radioactive cesium in the tissues. Different radioactive cesium levels were not found among parts of the muscles. These results indicate that radiocesium accumulated highly in the kidney and homogenously in the skeletal muscles in the heifers.

Nuclide

Fukushima Nuclear Accident

Caesium

radioactive contamination

10.1271/bbb.120424

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Citations (14)

Leukocyte Phagocytic Activity with or Without Probiotics in Holstein Calves

Research Journal of Biological Sciences (2010)

Shin‐ichi Kawakami Tomoya Yamada Naoto NAKANISHI Yimin Cai Hiroshi Ishizaki

10.3923/rjbsci.2010.13.16

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Citations (9)

Effect of the anatomical site on telomere length and pref-1 gene expression in bovine adipose tissues

Biochemical and Biophysical Research Communications (2015)

Tomoya Yamada Mikito HIGUCHI Naoto NAKANISHI

Intramuscular fat

10.1016/j.bbrc.2015.06.036

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Citations (3)

Liveweight gain of grazing steers on bermudagrass swards (Cynodon dactylon L.) combined with several temperate grass swards and white clover swards

T. Kanno Masataka Fukuyama Setsuro Sato Naoto NAKANISHI

Cynodon dactylon

Cynodon

Trifolium repens

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Feeding of Lactic Acid Bacteria and Yeast Affects Fecal Flora of Holstein Calves

Journal of Animal and Veterinary Advances (2011)

Shin‐ichi Kawakami Tomoya Yamada Naoto NAKANISHI Yimin Cai

Flora

10.3923/javaa.2011.269.271

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Citations (14)

Fat depot‐specific differences in leptin mRNA expression and its relation to adipocyte size in steers

Animal Science Journal (2003)

Seung Hak Yang Tohru Matsui Hiroyuki Kawachi Tomoya Yamada Naoto NAKANISHI

ABSTRACT This experiment was conducted to investigate leptin mRNA expression, adipocyte size, and their relationship in several adipose tissues of fattening steers. Subcutaneous, perirenal, intermuscular and intramuscular adipose tissues were collected from three crossbred steers (Japanese Black cattle X Holstein) aged 21 months. The mRNA level and adipocyte diameter were determined in these adipose tissues. The intramuscular adipose tissue had a lower leptin mRNA level than the intermuscular and perirenal adipose tissues ( P < 0.05). Leptin mRNA level was lower in the subcutaneous depot than in the intermuscular depot ( P < 0.05). Adipocyte diameter was larger in the intermuscular adipose tissue than in the subcutaneous and intramuscular adipose tissues ( P < 0.05). Leptin mRNA level was positively correlated with adipocyte diameter ( r 2 = 0.81, P < 0.05). These results suggest that the cattle have fat depot‐specific differences in leptin gene expression, which are a result of a difference in adipocyte size.

Depot

Intramuscular fat

10.1046/j.1344-3941.2003.00081.x

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Citations (20)

Effects of Whole Crop Rice Silage on Meat Quality and Adipokine Gene Expression in Fattening <i>Wagyu</i> Cattle

Japan Agricultural Research Quarterly JARQ (2017)

Tomoya Yamada Mikito HIGUCHI Naoto NAKANISHI

The objective of this study was to investigate the effects of whole crop rice silage (WCRS) feeding on the lipid stability of beef and fat depot-specific adipokine gene expression patterns in Wagyu cattle. Wagyu steers were fed a control diet (CT, n=4) or a high-vitamin diet containing WCRS (HV, n=4) from 10 to 30 months of age. The α-tocopherol concentration of the longissimus muscle was significantly higher in the HV group than in the CT group. The percentage of metmyoglobin in the longissimus muscle was significantly lower in the HV group than in the CT group. The 2-Thiobarbituric acid-reactive substance values of the longissimus muscle were also significantly lower in the HV group than in the CT group. The plasma 8-isoprostane concentration, which is a biomarker of oxidative stress, was significantly lower in the HV group than in the CT group. The expression of adipokine genes (VEGF, FGF-2, and leptin) in mesenteric adipose tissue was significantly lower in the HV group than in the CT group. These results suggest that feeding beef cattle on WCRS improves both the quality of meat and the oxidative stress status.

Beef Cattle

Marbled meat

Silage

Brahman

Longissimus

10.6090/jarq.51.27

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Citations (2)

Effect of Probiotics on Bacterial Flora of Various Gastrointestinal Regions in Holstein Calves

Journal of Animal and Veterinary Advances (2010)

Shin‐ichi Kawakami Tomoya Yamada Naoto NAKANISHI Yimin Cai

Flora

Holstein Cattle

10.3923/javaa.2010.1556.1559

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Citations (3)

The Relationship between the Physico-chemical Properties of Longissimus-Rib and of Major Muscles

Nihon Chikusan Gakkaiho (2006)

Naoto NAKANISHI Shin‐ichi Kawakami Tomoya Yamada Yasuhiro Aoki

リブロース部位の胸最長筋の理化学的測定値と他の部分肉の代表的な筋肉の理化学的測定値の関係を明らかにするために，黒毛和種去勢牛の筋肉内脂肪含量，剪断力価，総色素含量について筋肉間の関係を調べた．その結果，リブロース部位の胸最長筋と他の筋肉の間でもっとも相関係数が高かったのは総色素含量で，脂肪含量，剪断力価の順であった．各筋肉の理化学的測定値を目的変数として，リブロース部位の胸最長筋の理化学的測定値，生体重，枝肉重量，日齢，枝肉中の筋肉，骨，脂肪重量，枝肉中の脂肪割合を説明変数として変数増減法により重回帰分析した．その結果，脂肪含量，剪断力価，総色素含量のいずれにおいても，重回帰分析でもっとも高い頻度で選択された説明変数は，リブロース部位の胸最長筋の理化学的測定値であり，枝肉格付けにおいてリブロース部位の胸最長筋により他の筋肉の性状を予測することは適切であると考えられた．

Longissimus

Longissimus muscle

10.2508/chikusan.77.37

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Citations (0)