TOKUNAGA Tadaaki

写真a

Affiliation

Faculty of Agriculture Department of Animal and Grassland Sciences

Title

Associate Professor

External Link

Degree 【 display / non-display

  • Doctor(Agriculture) ( 2013.9   University of Miyazaki )

  • 修士(農学) ( 2004.3   宮崎大学 )

Research Areas 【 display / non-display

  • Life Science / Animal production science

 

Papers 【 display / non-display

  • 地域飼料資源を主体とした発酵TMR給与による黒毛和種経産老廃牛の肥育試験

    松浦千聖,大野篤太,山野勇朔,徳永忠昭,田尻優生,木村 萌,高橋俊浩,小林郁雄,川島知之

    肉用牛研究会報   ( 114 )   5 - 13   2023.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  • Metabolic Profils and Their Correlation with Carcass Traits in Japanese Black Steers under Progeny Testing Reviewed International coauthorship

    Tadaaki TOKUNAGA, Fortune Ntengwa JOMANE, Toshihiro TAKAHASHI, Hiromu KATAMOTO, Ikuo KOBAYASHI, Kenichi YOSHIMUTA, Ryuji OKUNO and Takafumi ISGIDA

    日本暖畜産学会報   64 ( 2 )   89 - 95   2021.9

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  • Diversity of the Tellurite Resistance Gene Operon in <i>Escherichia coli</i>. Reviewed

    Nguyen TTH, Kikuchi T, Tokunaga T, Iyoda S, Iguchi A

    Frontiers in microbiology   12   681175   2021.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3389/fmicb.2021.681175

    PubMed

  • Estimation of the marbling development pattern in Japanese Black cattle by using serial ultrasound measurement data Reviewed

    Tokunaga T., Jomane F.N., Mandai S., Ishida T., Hirooka H.

    Animal science journal = Nihon chikusan Gakkaiho   92 ( 1 )   e13533   2021.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Animal science journal = Nihon chikusan Gakkaiho  

    The objective of this study was to develop mathematical equations for describing the change in marbling in Japanese Black steers using longitudinal measurements. Serial ultrasound measurements were taken at 14, 16, 20, and 26 months of age and analyzed using an image analysis software. The longitudinal marbling measurements from the ultrasound images and carcasses were fitted into a nonlinear logistic curve. Data used for the analysis consisted of 749 steers that converged in nonlinear curve fitting and showed reasonable estimated parameters of the logistic curves. The average predicted mature beef marbling score (BMS) and maturation rate were 6.26 and 0.353, respectively, and the average maturity levels at 24 months of age were 83.9%. The heritability estimates for the predicted maturity traits were moderate, indicating that these traits may have potential for genetic improvement. There was a negative relationship between the expected progeny differences between carcass BMS and maturity traits, suggesting that genetic improvement by carcass BMS may lead to the selection of bulls with late maturity for marbling. The results indicate that ultrasound and model building for marbling can be useful tools to correctly select candidate bulls with high marbling in the early fattening period.

    DOI: 10.1111/asj.13533

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  • Crowing characteristics of native singing chicken breeds in Indonesia Reviewed

    Bugiwati S.R.A., Dagong M.I.A., Tokunaga T.

    IOP Conference Series: Earth and Environmental Science   492 ( 1 )   2020.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IOP Conference Series: Earth and Environmental Science  

    © Published under licence by IOP Publishing Ltd. Singing chicken is germplasm, genetic resources, indigenous chicken in Indonesia and be known of their unique, exclusive, superiority of singing style with long-melodious rhythm, and different crowing style-tone-tempo comparing with other singing chickens breeds in the world. Some crowing character information was needed to optimize conservation and utilization strategies. The aim of the study was to compare crowing duration and number crowing syllables four singing chicken breeds in Indonesia (Bekisar, Kokok Balenggek, Pelung and Gaga'). This research used 532 birds Gaga' chicken from Sidrap, Barru and Maros Districts, South-Sulawesi province, Indonesia. They were separated based on crowing speed into Slow-group (234 birds) and Dangdut-group (298 birds). Then, Dangdut-group has separated again, based on total number crowing syllables, into Long-Dangdut-type (51 birds) and Short-Dangdut-type (247 birds). All crowing sounds were recorded and computerizing digitalized using Cool Edit Pro. Software to visualized bioacoustic character as a wave form then data interpreting for analyzing mean and standard deviation. Average crowing durations of Pelung, Kokok Balenggek, Bekisar and Gaga' chicken (Short-Dangdut-type and Slow-group) were 2.0 to 10.0 sec. Dangdut-Long-type was the longest crowing duration (30.5 sec) and the highest number syllables (140.92). Average number syllables of Pelung (3 sec), Kokok Balenggek (3 to 12 sec) and Bekisar (2 sec) chicken were less than Gaga' chicken (Dangdut-Long-type: 140.9 sec, Dangdut-Short-type: 20.9 sec and Slow group: 8.2 sec). Each singing chicken breed in Indonesia have uniqueness and differences crowing character. A crowing character such as crowing duration and number of syllable could be identified as one of basic selection to promote and to maintain conservation of singing chicken as germplasm of Indonesia.

    DOI: 10.1088/1755-1315/492/1/012100

    Scopus

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Books 【 display / non-display

  • 肉用牛の科学

    入江正和, 木村信熙 他

    養賢堂  2015.1 

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    Language:Japanese

MISC 【 display / non-display

  • 3Dカメラを用いたバークシャー種における体重推定の検討

    小山大地, 中村航, 大西克典, 浦川啓介, 川末紀功仁, 徳永忠昭

    日本暖地畜産学会報   65 ( 2 )   2022.9

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    Authorship:Last author, Corresponding author   Language:Japanese   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

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  • バークシャー種母豚の初乳および産次の違いが子豚に与える影響について

    中村航, 小山大地, 浦川啓介, 徳永忠昭

    日本暖地畜産学会報   65 ( 2 )   2022.9

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  • 繁殖牛の各乳頭における初乳IgG濃度の違いと血液成分との関連性

    北原優華, 大西克典, 小林郁雄, 邉見広一郎, 徳永忠昭

    日本暖地畜産学会報   65 ( 2 )   2022.9

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  • 超音波画像情報を用いた牛枝肉脂肪交雑の推定に関する研究

    大西克典, 萬代慎太郎, 西坂好晃, 橋本綺華, 徳永忠昭

    日本暖地畜産学会報   65 ( 2 )   2022.9

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    Authorship:Last author, Corresponding author   Language:Japanese   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

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  • 黒毛和種肥育牛における生体3D外貌情報と産肉形質との関連性

    田尻優生, 蔭山みなみ, 大西克典, 北原優華, 萬代慎太郎, 徳永忠昭

    日本暖地畜産学会報   65 ( 2 )   2022.9

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    Authorship:Last author, Corresponding author   Language:Japanese   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

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Presentations 【 display / non-display

  • 宮崎県における種雄牛造成と超音波肉質診断技術の活用事例

    萬代慎太郎, 田尻優生, 大西克典, 徳永忠昭

    第13回日本動物超音波技術研究会鳥取大会  2022.12.10 

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    Event date: 2022.12.10 - 2022.12.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 黒毛和種肥育牛における生体3D外貌情報と産肉形質との関連性

    田尻優生, 蔭山みなみ, 大西克典, 北原優華, 萬代慎太郎, 徳永忠昭

    第15回日本暖地畜産学会鹿児島大会  2022.9.30 

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    Event date: 2022.10.29 - 2022.10.30

    Language:Japanese   Presentation type:Oral presentation (general)  

  • バークシャー種母豚の初乳および産次の違いが子豚に与える影響について

    中村 航, 小山大地, 浦川啓介, 徳永忠昭

    第15回日本暖地畜産学会鹿児島大会  2022.9.30 

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    Event date: 2022.10.29 - 2022.10.30

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 3Dカメラを用いたバークシャー種における体重推定の検討

    小山大地, 中村 航, 大西克典, 浦川啓介, 川末紀功仁, 徳永忠昭

    第15回日本暖地畜産学会鹿児島大会  2022.9.30 

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    Event date: 2022.10.29 - 2022.10.30

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 繁殖牛の各乳頭における初乳IgG濃度の違いと血液成分との関連性

    北原優華, 大西克典, 小林郁雄, 邉見広一郎, 徳永忠昭

    第15回日本暖地畜産学会鹿児島大会  2022.9.30 

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    Event date: 2022.10.29 - 2022.10.30

    Language:Japanese   Presentation type:Oral presentation (general)  

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Awards 【 display / non-display

  • 令和3年度宮崎大学農学部優秀論文賞

    2021.9   宮崎大学農学部   Estimation of the marbling development pattern in Japanese Black cattle by using ultrasound measurement data

    Tokunaga T, Jomane FN, Mandai S, Ishida T, Hirooka H

Grant-in-Aid for Scientific Research 【 display / non-display

  • 非接触画像計測による和牛の体重推定システムの開発

    2011.04 - 2014.03

    科学研究費補助金 

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    Authorship:Coinvestigator(s) 

    非接触で牛の体重を推定するシステムを開発するために,画像計測技術を用いて牛の三次元形状データを取得するシステムを試作した。実用性を考慮した可搬性のある計測器を実現するために画像計測技術の導入を試みている。また,和牛が大型であることから,手動スキャンニングタイプで計測範囲に制限の無い計測器の開発を目指した。任意の方向に手動でスキャンニングを行うために,計測器自体の位置と姿勢を計測する必要があることから,独自の移動量検出アルゴリズムを用いた計測器の位置決めを試みた。和牛の足部など局所的な計測について良好なデータを取得できることを確認した。また,三次元点群座標データを取得できるKINECTセンサを用いたシステム開発を試みた。和牛の左右と上方に設置した3台のKINECTセンサで和牛の形状を同時に取得することで和牛全体の形状を三次元的に計測することを試みた。三台同時に計測を行うために,静止させることが困難な和牛の形状を計測できることを可能にした。三台のセンサで得られたそれぞれの点群データについて座標変換行列を用いて世界座標に統合することを行った。6点以上の球状マーカをそれぞれのKINECTセンサで撮影し,マーカの重心位置を基準点として,自動的に座標を統合した。計測領域に和牛の方向がいつも一定になるとは限らないので,計測された和牛形状を水平方向にコンピュータ上で輪切りにし,形状を楕円近似することで,和牛の向きを修正することを行った。また,牛舎内は地面状態が悪く,計測器を水平に設置できるとは限らないため,計測器に傾きセンサを取り付けることで計測器の傾きを補正した。得られた和牛の形状データをコンピュータ上で水平および垂直方向に断面形状として表現することが可能になった。

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